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What’s the best screening solution for you? With many options available, companies often struggle to find the optimal machine for their specific requirements. Although all technologies serve the same basic purpose – the separation of particles by size – they fundamentally differ in their construction, operation, and applications. The right choice can not only increase productivity but also minimize maintenance and downtime, which is crucial in today’s competitive industrial landscape. Below, we’ll look at the differences between conventional vibratory screens and direct-excitation screen machines to help you make your decision. Conventional Vibratory Screens: How They Work Conventional vibratory screens operate with an oscillating motion transmitted to the entire screen frame. This movement is generated by eccentric shafts or unbalance motors, ensuring the material advances on the screen surface and particles can fall through the mesh. Advantages of Conventional Screens: * Simple design * High throughputs * Flexibility Disadvantages of Conventional Screens: * Inefficient separation with low vibration

With coal plants being phased out the construction industry faces a gypsum supply challenge. Recycling becomes a crucial alternative. The global shift away from coal-fired power plants has significantly impacted the availability of Flue Gas Desulfurization (FGD) gypsum, a byproduct of these plants. With coal plants being phased out, particularly in countries like Germany where a complete shutdown is expected by 2038, the construction industry faces a gypsum supply challenge. Currently, more than half of Germany’s gypsum demand, approximately four million tons annually, is met through FGD gypsum. As natural gypsum sources are limited, recycling becomes a crucial alternative, with an estimated three to four million tons of gypsum waste available for recovery. Globally, FGD gypsum production is projected to peak around 2030, declining thereafter, especially in Europe, Japan, and potentially the USA. This shift presents both challenges, such as rising gypsum costs due to reduced FGD output, and opportunities, including a growing recycled gypsum market projected to reach $3.21 billion by 2030. Recycling

The RHEWUM ScreenSpector app optimizes screening machine monitoring with tools like MeshConverter and VibSonic, available for iOS and Android. The RHEWUM app, known as ”RHEWUM ScreenSpector,” provides users of RHEWUM screening machines with tools for optimal utilization. Available for iOS and Android, it supports the operation and monitoring of screening machines with several key features: MeshConverter The MeshConverter simplifies the conversion of mesh sizes. It converts between DIN millimeters, inches, ASTM, and Tyler mesh units and offers advanced functions for calculating separation sizes for inclined screens. Users can input mesh sizes and angles to determine separation sizes in inches or millimeters. The tool supports calculations with any two values, making it a comprehensive solution for various screening scenarios. Additionally, the inclination angle (0°-45°) can be automatically determined using the smartphone’s sensors. VibSonic VibSonic transforms your smartphone into a powerful sound measurement device that measures sound levels across various frequencies. It calculates a mean

Learn how a French urea prills manufacturer aims to address production challenges with a tailored screening approach. The Challenge: Ensuring Consistent Product Quality A prominent French manufacturer of urea prills faced a critical juncture in their production process. Their existing screening system, handling both uncoated and coated prills, struggled with persistent clogging in the lower deck and excessive dust in the final product. The manufacturer required exact separations for two fine screen cuts during loading screening, adhering to strict quality standards that permitted only a small percentage of undersized and oversized products. Developing a Quality-Focused Configuration RHEWUM’s engineering team conducted a series of in-depth screening tests to determine the optimal machine configuration. These tests focused on various screen designs, amplitudes, and frequencies to enhance separation efficiency and product quality. The aim was to develop a solution specifically tailored to overcome the quality challenges faced by the manufacturer. A Tailored Solution: Precision

A material shaping the future of construction – now in the spotlight With RHEWUM, you achieve precise and efficient. Clay defines 2025 Clay has been designated as the Rock of the Year 2025 by the German Geological Society (DGGV), underscoring its indispensable role in various industries, particularly in construction materials. Understanding Clay and Its Applications Clay is a fine-grained natural soil material containing clay minerals. Its unique properties, such as plasticity when moist and hardness upon firing, make it a versatile component in the production of building materials. In construction, clay is primarily used in the manufacture of bricks, tiles, and cement, contributing to the durability and thermal efficiency of structures. The Importance of Screening Technology Screening is a critical process in clay refinement, aiming to separate particles based on size to achieve desired specifications. Screening machines are employed at various stages of production to remove impurities and classify materials into specific grain sizes. Typical separations target particle sizes ranging from

Screening plays a crucial role in optimizing its functionality by controlling particle size to match the needs of specific applications. Bentonite, a versatile clay mineral valued for its absorbent and swelling properties, is essential across diverse industries. From drilling fluids to cosmetics, bentonite’s unique characteristics make it invaluable, yet challenging to process efficiently. Here’s an overview of bentonite’s applications and the specialized screening techniques that address processing challenges. Key Applications of Bentonite - Drilling Fluids: Bentonite is used in drilling for oil, gas, and water due to its ability to stabilize borehole walls, cool drill bits, and suspend cuttings. Fine particles (75-150 microns/ 100-200 mesh) are crucial here, as they prevent clogging and create a stable slurry. - Foundry Sand Binder: In casting molds, coarser bentonite particles (150-250 microns/ 60-100 mesh) ensure structural integrity and prevent excessive dust, helping molds retain their shape during metal casting. - Iron Ore Pelletization: Fine, uniform particles (45-150 microns/ 100-325

The processing of silica and silica gel requires precise and specialized screening technology. These materials, whether as a desiccant, carrier material or additive, pose complex challenges due to their specific properties such as different particle sizes, hygroscopic nature, dust formation and abrasiveness. Especially when used in food supplements, purity and gentle product processing are crucial. Screening ensures compliance with strict quality standards by classifying the materials into particle sizes and removing unwanted particles such as fine dust or oversized particles. This optimizes both further processing and the overall quality of the end product. Screening of silica powder and gel In the processing of silica and silica gel, screening machines are used in several production steps: - Dedusting: removal of fine dust (<0.1 mm/ 140 mesh) to minimize clumping and dust pollution. - Classification: separation into specific fractions, e.g. 0.1-0.5 mm (140 – 35 mesh) for powdery products or 1-6 mm (18-3 mesh) for granulates - Oversize separation:

A pioneering company specializing in the development and manufacturing of equipment for the recycling industry has launched an innovative project in the Netherlands. The goal was to process burned soil as a valuable supplement for building materials. This challenging application, primarily involving dust and ash from burned solids like earth and sand, requires ultra-fine screening at 60 μm (230 Mesh) with highest purity demands. Soil is burned to eliminate harmful organic contaminants, pathogens, and invasive species, which otherwise render the soil unsuitable for construction purposes. By eliminating these impurities, the recycling industry transforms this cleaned soil into a valuable, sustainable raw material for building applications, contributing to a circular economy and meeting high environmental and safety standards. To realize this transformation, the facility was designed to achieve high-precision separation with a throughput of 20 t/h. The fine grain size, along with the abrasive and corrosive nature of the material, and temperatures reaching up to 200°C, required advanced solutions. RHEWUM’s extensive screening trials proved successful, delivering machinery that achieves product purity of nearly

Precise screening machine enhances sorbitol production for a leading sugar substitute producer from Turkey Turkish starch industry leader chooses RHEWUM’s cutting-edge technology for sorbitol production A leading enterprise in the Turkish starch and starch derivatives industry, with a legacy dating back to the 1980s, continues to drive innovation. Known for its unwavering commitment to advancement and diversification, this sorbitol producer from Turkey has expanded its product portfolio to cater to various sectors, including food, textiles, paper, chemicals, pharmaceuticals, personal care, and specialized industrial applications. One of the standout products in their range is sorbitol, a low-calorie natural sweetener with a low glycemic index. In a strategic move to further enhance their sorbitol production capabilities, this Turkish enterprise recently chose RHEWUM’s cutting-edge RHEsono® screening machine, achieving an impressive throughput of 4 tons per hour with precise particle separation at less than 0.5 mm and 0.1 mm. The RHEsono® vibrating screening

Dust explosions remain a serious threat in industries dealing with explosive low ignition energy materials, particularly in the defense sector. What has to be considered when screening explosive materials? By investing in high-quality, static, and gas-tight screening machines, companies can significantly reduce the risk of dust explosions, ensuring both employee safety and the integrity of their production facilities. In industries handling explosive materials, such as the production of black powder and ammonium nitrate, dust explosions present a significant hazard. Dust explosions are not limited to organic materials but can occur with any finely powdered combustible material that meets specific conditions, especially in high-risk industries. Dust explosions occur when three main conditions are met: # Critical Dust Concentration – Fine particles suspended in air, particularly below 0.4 mm in size, create an explosive atmosphere. For example, the explosion severity index (KSt) for fine materials can exceed 140 (bar·m/s), classifying them as ST1, a moderately explosive category. # Oxygen – The presence of at least 9% oxygen is required for an explosion, making

Screening the finest silicon powder requires the highest purity standards. Not challenging enough? Then make it gas-tight for hydrogen This is how it works: he highest purity standards are required for the sieving of high-purity silicon powder, which is used in chip and solar panel production. Even the smallest impurities can have serious consequences for the quality of the end product. RHEWUM has risen to this challenge and supplied three RHEsono® screening machines that have been specially developed for screening the finest silicium powder. The focus here was on a special technical requirement: hydrogen tightness. One of the biggest technical challenges was that the screening machines had to be gas-tight, in particular hydrogen-tight (H2-tight). In a hydrogen atmosphere, the hydrogen protects the sensitive silicon powder from unwanted chemical reactions that could be triggered by metal ions (hydrogen passivation). This protective effect is crucial to ensure the high purity of the end product. However, the extremely small hydrogen molecules can pass through steel and cause hydrogen embrittlement, which makes the

How do you achieve maximum product purity and high throughput rates when screening hygroscopic diammonium hydrogen phosphate (DAP)? Diammonium hydrogen phosphate (DAP) is an essential component of many fertilizer compositions due to its high phosphorus and nitrogen content. When screening DAP, producers are faced with the challenge of ensuring fine and homogeneous particle sizes, while at the same time guaranteeing a high production rate and product purity. Challenges in the sieving of DAP Screening DAP is technically challenging as the material is hygroscopic, i.e. it absorbs moisture from the ambient air and has a tendency to form agglomerates. These agglomerations make it difficult for the material to pass through the screen meshes and impair the efficiency of the screening process. In addition, high throughput rates can lead to blinding and clogging of the screen mesh, which can result in the screening process having to be completely interrupted, bringing the entire production process to a standstill. Precise screening using innovative technology RHEWUM specializes in screening challenging

A facility in Louisiana, USA, has enhanced its barite processing for fracking by acquiring two RHEsonox screening machines and a RHEmid feeder, aimed at improving the efficiency and precision of barite screening. Barite, a mineral composed of barium sulfate (BaSO4), is commonly used in the oil and gas industry, especially in hydraulic fracturing (fracking) and drilling operations. In these contexts, barite serves as a weighting agent in drilling muds. The high density of barite helps to counteract the immense pressures found in oil and gas reservoirs. By adding barite powder to the drilling mud, the overall density of the mud is increased, which in turn helps to maintain the stability of the borehole, control formation pressures, prevent blowouts, and facilitate the extraction of oil and gas. In order to upgrade barite processing for fracking RHEWUM America Inc. recently delivered two RHEsonox® sieving machines that precisely screen barite with separations cuts of up to 325 mesh (50 μm) and a RHEmid feeder for uniform material distribution. The RHEsonox® high-performance screening machine utilizes two counter-rotating imbalance motors to create linear motion, facilitating

Discover how advanced sieving technologies optimize the processing of Boron Nitride. This technology allows for precise separation of the material into highly pure fractions The Role of Boron Nitride and the Importance of Sieving Technology Boron Nitride, also known as Bornitrid, is a critical raw material in various industrial sectors, due to its unique properties such as high thermal conductivity, chemical resistance, and excellent insulating qualities. To ensure the quality and purity of Boron Nitride, sieving technology plays a central role. The requirements for the sieving processes are demanding. The particle size of Boron Nitride varies greatly, and the separation into highly pure fractions is critical for application consistency. Here, the innovative sieving machines from RHEWUM come into play, which are specially tailored for the challenges of sieving Bornitrid. Applications of Boron Nitride Sieving Machines Bornitrid is used in a variety of applications, from lubricants and ceramic components to thermal conductive pastes. For all these applications, the purity of the material is crucial. The Boron Nitride Sieving Machines

Our corporate website rhewum.com is now available in 104 different languages to offer you the best possible user experience. What does this mean for you? Thanks to this new feature, you can easily access all RHEWUM information, services and products in your preferred language, whether you are from Europe, Asia, America or Africa. Our website is now globally accessible and adapts to your language needs. Your advantages at a glance: - Global accessibility: get all the information you need in the language of your choice, without language barriers. - Improved user experience: Navigate effortlessly through our website and find what you are looking for faster. - Clarity and comprehensibility: Understand our products and services better thanks to accurate translations. Efficient communication: Contact us in your language and get immediate, understandable answers. We use AI-based translators to ensure that the content on our website is delivered with high quality and comprehensibility. Our goal is to provide you with the best possible user experience and make your interactions with us

Announcing the launch of our latest innovation, the RHElite high-precision screen, a groundbreaking solution designed for the most demanding industrial applications. Engineered with a perfect blend of steel and Carbon Fiber Reinforced Polymer (CFRP), the RHElite sets new standards in the screening of finest high-end products. How is it possible to build such a machine? Due to the anisotropic behavior of certain types of GFK (glass-fiber-reinforced plastic), where mechanical properties such as strength and stiffness vary depending on the direction, the machine can be specifically optimized for certain load directions. This allows for more efficient and targeted use of materials. Optimized for Unmatched Precision Screening The RHElite is engineered to perform with unparalleled precision, making it the top choice for the screening of the finest high-end products. Its advanced technology ensures sharper separation of fine particles, significantly enhancing the quality of your output. The sophisticated design and superior performance of the RHElite outpace traditional models, offering a more energy-efficient solution that meets

Learn how RHEWUM’s screening technology optimizes the separation of glass fiber reinforced polyamide beads to increase quality and efficiency in material processing. Introduction The industry is continuously faced with the challenge of processing materials not only efficiently and economically, but also meeting the quality requirements of end products. A special focus is on the processing and separation of plastics, especially glass fiber-reinforced polyamide spheres (PA GF). These specialty plastics, enriched with glass fiber, offer improved mechanical properties and are therefore in high demand in many technical applications. Efficient sieving of these materials is crucial for the purity of the end product and thus for the quality. In this context, RHEWUM sieving machines play a central role. Technological progress in sieving technology RHEWUM’s sieving technology is based on long experience and continuous development to meet the specific requirements of different materials. Particularly in the separation of glass fiber-reinforced polyamide spheres, it is essential to achieve precise separation to secure the desired material

As the world gravitates towards sustainable solutions, the recycling of lithium-ion batteries has emerged as a crucial element in our green future. Central to this process is the handling of ’black mass,’ a complex substance that presents unique challenges in recycling and especially screening. Understanding Black Mass Screening Black mass, primarily composed of valuable metals like lithium, cobalt, and nickel, also contains graphite, which complicates the recycling process. Screening is essential at different stages, such as removing larger metal foils during black mass creation and purifying black mass by removing materials like aluminum and copper. The primary challenge arises from the large fraction of fine graphite particles in black mass, which can be as small as 10 µm. The nature of fine graphite as a sticky, greasy material complicates the process. It tends to adhere to other particles, making separation difficult. Additionally, graphite’s propensity to clog meshes and form agglomerates that move as cakes across screens reduces screening efficiency. Traditional screening methods often struggle

Sugar is usually offered in different particle sizes depending on sales requirements. The requirement: Fifteen different particle sizes A customer approached RHEWUM with a request to offer fifteen different particle sizes for sugar products. The customer supplies a number of different sugar processing industries, including companies as diverse as beverage manufacturers and bakeries. RHEWUM was therefore asked to provide screening machines that could process the feed material in three stages from very fine classifications to rather coarser separations in the final stage. Versatile high-performance machines Machines of the RHEsono type were used for the fine separations. Here, a high-frequency beater bar movement discharges the screenings at right angles from the screen mesh - the inclination of the mesh enables the screenings to be transported over the screen. For the two stages with coarser separations, smaller machines of the RHEmoto type were used. Maintenance-free unbalanced motors located outside the screen housing transmit high-frequency vibrations via oscillating axes directly into the screen

Foundries face the challenge of efficiently separating casting molds and sand cores from cast metal parts. This sand must be recycled. What is Cast Shakeout and Sand Shakeout? After the molten metal is poured into the molds and solidified, these molds need to be removed to obtain the finished castings. This process is called shakeout. Cast Shakeout specifically refers to the separation of casting molds or cores from the cast metal parts. Cores made of materials such as ceramics, which have a different composition than the surrounding sand, are often used. To obtain the final shape of the casting, these cores need to be removed. On the other hand, Sand Shakeout involves the separation of sand molds and sand cores from the cast metal parts. Sand is commonly used as a molding material in the foundry industry. Once the metal is cast and solidified, the sand molds need to be removed to expose the castings. RHEtrans for efficient Cast Shakeout RHEtrans by RHEWUM is an oscillating chute with an unbalanced drive, known for its economical conveying capability and robust, reliable construction. RHEtrans

Four profitable RHEsono® vibrating screening machines equipped with pneumatic vacuum cleaning technology have been delivered to Shanghai, China. These machines are set to advance the sieving process for sorbitol, a widely used sugar substitute and food additive (E 420) in various industrially manufactured food products. Each of the four RHEsono® sieving machines is equipped with three sieve decks and a remarkable processing capacity of 10 tons per hour. The sieving application involves sorbitol with three distinct particle size fractions: 1.25 mm, 0.5 mm, and 0.28 mm. Sorbitol, also known as food additive E 420, glucitol or hexanhexol, belongs to the group of sugar alcohols, making it a crucial ingredient in the food industry as a sugar substitute, carrier substance, and moisture retention agent. The Challenge of Sieving Sorbitol Sorbitol processing can be a challenging task due to its sticky nature even when it has low moisture levels. This characteristic can lead to sieving complications, including mesh clogging, which can negatively impact product quality. To address this issue, RHEWUM’s RHEsono®

Screening machines optimize the quality of lignin by removing impurities and dust, classifying lignin pellets by size and eliminating lumps. Lignin is the second most common biopolymer on earth after cellulose. In the industrial processing of wood, especially in paper production, lignin is produced in large quantities as a by-product. In the past, this by-product was often burned to generate energy, but due to its chemical structure and properties, it is now used as a filler, additive, binder, reinforcing agent or adsorbent. The use of lignin in these and other applications is in line with the trend towards the bioeconomy, in which renewable, plant-based raw materials are used instead of fossil resources. Improved lignin quality Screening machines help improve the quality of the produced lignin and prepare it for specific applications or further processing steps: - Cleaning and separation: Lignin obtained from the pulping process of lignocellulosic materials may contain impurities or undesirable solid components. Screening machines can help to remove these impurities. - Classifying: Lignin particles

Insect larvae separations require high-precision, smooth screening processes that are suitable for keeping living particles alive in the technical process. RHEWUM uses machines of the RHEflex type, among others, for this purpose. The RHEflex linear vibrating screen is used for protective screening and classification of medium- and coarse-grained bulk materials. For these machines, a special process has been developed for a simplified change of PU-panels. In this process, one screening surface consists of three cassettes each, in which PU-panels are fixed. This gives maintenance teams quick and easy access to the screen elements. Special screen linings made of polyurethane For separation, polymesh PU screen panels made of polyurethane are used instead of screen cloths. The abrasion-resistant and cost-efficient polymesh screen panels combine durability with maximum precision. They are ideal for screening fine, abrasive or moist materials. In this way, smooth separation of larvae from the culture medium can be carried out.

Due to the flourishing construction industry, sand is now the second most traded raw material after water. But suitable sand resources are limited. RHEWUM has developed a solution to produce sand from widely spread gravel right next to the customer. A flourishing construction industry without sand is unthinkable. According to One Stone Consulting, around 10 to 15 billion tons of building sands are required worldwide each year (1). In addition, we need industrial sands, for example for fracking or the glass industry. This corresponds to a per capita sand consumption of about two to eight tons per year, so that a total of 40 to 50 billion tons of sand and gravel must be extracted. This makes sand the second most traded raw material after water (2). Since the demand for sand is growing faster than suitable sand resources can be found, sand is instead produced from gravel or transported over long distances. This is not environmentally reasonable. RHEWUM has developed a solution to process sand mobile and therefore directly on site. THE RAW MATERIAL Quartzite sand is mainly used in the construction industry. It consists of silicon dioxide (SiO2). The great hardness of the material (7° according to Mohs) is an advantage.

Calcium carbonate is a material that originated from the remains of single-celled sea creatures over millions of years of Earth’s history. Today, it is the basis for a range of commonly used building materials, including limestone and dolomite. Finest separations up to 0.1 mm A British customer discussed with RHEWUM ways to renew an aging installation for processing calcium carbonate. Several existing sieving machines and sifters were to be replaced. Fine separations up to 0.1 mm were performed. Setting vibration during operation Machines with direct excitation of the screen fabrics were planned as the machine type. Drives for the decks on which coarser separations were to be performed were unbalanced motors. The decks for fine separations were equipped with oscillating heads that allow the vibration to be changed during operation via thyristor controllers. The machine types of choice were then RHEsono, RHEmoto and RHEfino as a combination of both types. For the task of feeding the material onto the machines, RHEside feeders with lateral feeding were used. Customer requirements were met With

Insects such as buffalo worms and mealworms are a sought-after source of protein as sustainable feed as well as for a climate-friendly diet. RHEWUM has the technology for gentle sieving of live larvae on an industrial scale. Like many other insects, buffalo and mealworms are a high-quality source of animal protein. Buffalo worms are the larvae of the glossy grain mould beetle and grow to about 7 to 11 millimetres in length [1]. Worm, or not Flourworms are the larvae of the flour beetle and grow considerably larger than buffalo worms, reaching up to 40 millimetres. Both are larvae of the black beetle family and are not worms in the true sense, as they each have three pairs of legs. Nevertheless, for the sake of simplicity, the buffalo and mealworms are referred to here synonymously as larvae and worms. Climate-friendly proteins Compared to other farm animals, the breeding and keeping of buffalo and mealworms is much more climate-friendly, which means that worms are becoming increasingly important as a component of a sustainable diet. For each kilogram of edible protein from insect larvae, a similar amount of energy is required as for each kilogram of protein from milk, chicken,

Sugar is among the most demanding screening materials. The RHEsono vibration screening machine by RHEWUM precisely separates sugar at high throughputs Sugar is among the most demanding screening materials. It draws moisture, tends to agglomerate and has abrasive properties. To achieve maximum precision in separation under these conditions, vibration screening machines with direct excitation of the screening mesh are a good choice. The RHEsono vibration screening machine utilizes magnetic vibrating heads to transfer motion impulses directly to the screening mesh. The impulse can be precisely adjusted to the properties of sugar. The screening mesh begins to vibrate, the sugar is deimpacted at a high frequency, agglomeration is reduced. To counter any clogging that might nevertheless occur, the RHEsono has an additional cleaning pulse which clears the screening mesh at regular intervals. This neither interrupts the screening process, nor does the pulse negatively affect separation precision. This technology allows the RHEsono to achieve highest precision in separation at high throughputs, in this case more than

Sodium carbonate is difficult to screen as its hydrophilic properties cause agglomerations. RHEWUM’s high quality sieving technology increases production. Soda ash is obtained from sustainable production sources, such as the processing of wood. Soda ash is an indispensable raw material in partticular for the glass industry, but also used as a bleaching agent in the chemical industry and not least in the lye of Bavarian pretzels. The demand for high-quality soda ash is high. The quality of the soda granulate is significantly influenced by the performance, and thus the quality, of the screening machine in use. Soda ash is considered to be a difficult material to sieve, which easily sticks to the screening mesh and tends to form lumps due to its hydrophilic properties. The screening mesh can quickly become clogged and the entire production come to a standstill. Thus, the reliable supply of soda ash for important industrial sectors, and with it the capacity of soda ash producing plants, depends on the screening machine. With the RHEWUM WA, RHEWUM offers a state-of-the-art screening machine with direct excitation of the

In cooperation with biologists, Rhewum has developed a new screening machine for sorting mealworms. Screening mealworms poses unique technical challenges with regard to animal health and safety. Rhewum joins the Food Revolution, with a newly gentle sieving developed method for use in large mealworm farms In cooperation with biologists, Rhewum has developed a new screening machine for sorting mealworms. Mealworms are gaining importance in the food industry as a sustainable source of high quality protein, and screening them in an animal friendly way poses unique technical challenges. Top quality protein Mealworms have long been regarded as unwanted additions by the food industry, but they have enormous potential for making our future more sustainable. Mealworms may not look like much, but they contain top quality protein and unlike other animals raised for meat, their impact on the environment is much less and they have few requirements for a healthy existence in accord with their needs. Increasing demand for sustainable, climate friendly alternatives to conventional animal protein means an increase in the demand for mealworms. Highly specialized sieving Mealworms

In future, RHEWUM will use environmentally friendly water-based paints when painting its machines. This not only benefits our environmental balance (VOC balance), which can be reduced to up to 78%. In this way it is now possible, among other things, to significantly reduce the use of diluents. A high quality and resilient corrosion protection is of course guaranteed. And that even with lower layer thicknesses. In addition, the drying temperatures can be halved from the current 80 ° C to approx. 60 ° C and drying times from four to two hours. Would you like to find out more about RHEWUM and its products? Contact us, we look forward to your questions.

Through a live stream customers can follow the screening test of their product live on their screen. You can also book a virtual tour of the RHEWUM GmbH production facilities. Considering the current pandemic situation, some time may pass before customer visits to our company are part of our daily business again. But we don’t want to keep you, our customers, waiting. That’s why we are offering you the opportunity to follow your screening test live in our technical center via smartphone, tablet or computer. Join us virtually when your product is tested and discuss the results directly with our screening experts. You can find out more about the process of a screening test on our homepage. Or experience RHEWUM GmbH live on a tour through the production facility and the technical center where you will get an exciting insight into our German quality production. Of course, you can also combine the tour with your screening test. Make an appointment with our screening experts today for your personal, virtual meeting at RHEWUM.

In an official announcement, the Australian graphite producer BassMetals Ltd. recently announced the latest developments of the company to its shareholders. Among them were the convincing results from the RHEWUM technical center. Currently, BassMetals Ltd. uses three screening machines for producing five different (graphite) products. This procedure is very time-consuming and is to be simplified in the future by producing all separating cuts on only one machine. The company commissioned RHEWUM GmbH to deal with this problem and to find a solution. Whether as a pencil lead, solid lubricant, material for self-lubricating bearings and seals, or even as the shaft of a golf racket - graphite has many uses. In nature, the mineral occurs in the form of isolated flakes and grains in carbon-rich metamorphic rock and as veins in pegmatite. The company BassMetals Ltd. owns the Graphmada Large Flake Graphite Mining Complex in eastern Madagascar, in the immediate vicinity of the country’s only export port in Toamasina. From there, the mined and processed graphite is shipped primarily to the USA, Europe and India. The mining area has a unique graphite deposit in soft rock (regolith), which is characterized

In the production of sodium carbonate with fluctuating feed rates and finest separations in the range of 200 µm, many manufacturers rely on the proven screening quality of the RHEWUM WA vibration screening machine to achieve optimum quality of their produ Sodium carbonate has been used by humans for a long time and is considered one of the most versatile chemical products. Its applications include the glass industry, the chemical industry, the pulp and paper industry as well as the detergent and soap industry. The screening task usually consists of screening out the existing dust content from the actual soda product. Recent screening tests with sodium carbonate at the RHEWUM technical center confirm that the type WA screening machine is perfectly suited for finest separations at high capacities. The screen cloth is excited to high-frequency vibrations by means of beater bars directly applied to the screen cloth. Outside of the screen housing rugged electromagnetic drives rock the knocker shafts, conveying the high frequency oscillation directly into the screen mesh. Accelerations of up to 15 g and more are thus achieved on the screen cloth. The power of the electromagnets can be adjusted during operation via an electronic

Not identifying and correcting malfunctions on screening machines can become very expensive for you as a producer. But what to do if the service technician cannot be on site? The new RHEWUM Remote Service provides a solution. For us, SERVICE means supporting you at any time with our know-how, developing solutions quickly and implementing them effectively. That’s why we are now offering an exclusive RHEWUM Remote Service, which allows our service technicians to visit you virtually at your production site. What services are available for booking? In the "Service" menu select "Remote Service" to choose between a "Free Machine Inspection" or the "Remote Service Support". In the case of the "Free Machine Inspection", our service technician will spend one hour with you to inspect your machine and examine the function of your screening machine. Additionally, a written report with our recommendations for service and spare parts can be booked as an option. The "Remote Service Support ", on the other hand, is a chargeable offer that can be booked for four hours or more. This option is particularly suitable for maintenance work, emergencies or commissioning. How to make an appointment? Once

In his production chain an American manufacturer will no longer use two machines for screening his plastic granulate, but only one: the Rhewum wafl with two screen decks. Pavement markings have been used since the beginning of the 20th century. Today they are part of the modern street scene and without them we would sometimes lose orientation. The line markings create a clear and safe traffic guidance. The products of the world’s leading North Carolina-based manufacturer are not only used on roads and highways, but also on taxiways, take-off and landing runways, parking lots, intersections and in all types of commercial, construction, government, industrial and architectural environments. So these markings help drivers, pilots and pedestrians to move safely in the right direction. The exact process of producing road markings will not be discussed in detail at this point, as it is quite complex. However, plastic granulate is processed in the production of road markings, that must be dewatered. With the help of the Rhewum wafl the water can be perfectly separated from the product and a low residual moisture of approx. 8 percent can

In order to increase the plant capacity for the production of cat litter, an international oriented company for raw materials built a second production line, in which RHEWUM screening technology was used once again to ensure product quality. A new, modern and automated high-bay warehouse ensures better logistics and efficient transport organisation to Europe as well as to the United Arab Emirates and Australia. After the discontinuation of mining in 1992 the potash factory in Lower Saxony was converted for a cat litter production using the already existing infrastructure. As a result of the success and increasing demand in the sales network with other companies, the second production line will increase capacity by 40 percent per year in the future. For this purpose further proven screening machines of Rhewum gmbH were designed, ordered, delivered on schedule and installed into an existing building. The commissioning at the end of 2019 was successful without any problems

At the beginning of September two employees of RHEWUM headed east to introduce RHEWUM screening machines to potential customers and those interested. The trip took them from RHEWUM’s headquarter in Remscheid to Freiberg in the Free State of Saxony which is located 545 kilometers away. The first destination was the Technical University “Bergakademie Freiberg”. During their visit our employees met with heads of institutes and PhD students for networking and a live presentation on our demo screening machine. Afterwards, plans for future cooperation were discussed during a shared barbecue. Consequently, RHEWUM will stay in contact with the TU Bergakademie Freiberg in order to realize future joint projects and to benefit from an intensive bilateral knowledge transfer of theory and industrial practice in the field of mechanical process engineering. The journey continued from Freiberg to Lutherstadt Wittenberg. Apart from being famous for its probably most prominent resident Martin Luther, Wittenberg is also known as an industrial-cultural city, as one of the most important chemical sites in Europe is located here.

Direct excited screening machines from RHEWUM for sugar industry A well-known European sugar producer was looking for new screening machines to replace his worn-out sizers. Since not only the old machines but also the building were affected, the new sifters should transfer as few vibrations as possible into the building and at the same time increase the efficiency of the screening process. So the decision was made for a machine with directly excited screen meshes. The existing sizers were designed for a throughput of 30 tons of refined sugar per hour with 5 separating cuts, whereas the required product quality for the lowest deck with a separating cut of 0.2 mm could not achieve the required product quality. To find a suitable replacement, trials were made in the technical center of RHEWUM, during which process-relevant parameters of the screening machine were determined and also the compliance with the permissible amount of off-spec particles for numerous sugar types was considered and proved. The results of machine types WA and

Effortless screening of lumps with the Rhewum sv-S feeder What to do if the product has lumps so large that they could even damage the screen mesh? Then a pre-screening must be implemented.. With the help of a Rhewum SV-S feeder this is no problem. For the screening of 200 tons of calcium ammonium nitrate (CAN) per hour an internationally operating plant manufacturer will receive a RHEWUM screener type WAU including a SV-S for his end customer from Egypt. SV means "lateral distribution", S stands for "screen". The directly excited screening machine type WAU is designed as a double-decker with separations at 5 mm and 2 mm. To prevent larger lumps from damaging the screen cloth of the WAU or clogging the coarse grain outlet, they are screened in a pre-separation in the SV-S at 15 mm. This reduces the loads on the screening machine while maximizing the service life and optimizing the actual screening process. A further advantage of the SV feeder with screening is the uniform distribution over the entire width of the screen.

To reduce the noise emission of your screening machine RHEWUM now offers an innovative sound insulation cover. Usually screening machines are not the quietest machines in the production chain. Due to impact bar movements the screen cloth is excited to high frequency vibrations. This, in combination with the product to be screened, causes noise emissions which sometimes have to be reduced. The sound insulation tarpaulin for screening machines provides a quick and uncomplicated solution to this problem. The sturdy, custom-made tarpaulin is covered with an acoustic membrane which damps the sound and absorbs sound energy. The sound power level of the machine can be reduced by 8 dB by attaching the sound-insulating tarpaulin, which corresponds to approximately halving the perceived noise level. The tarpaulin is flexible and easy to bend - which in turn ensures simple and quick installation on the machine. Important maintenance openings remain easy to operate, as the tarpaulin can be opened at the crucial points using robust zips. The short implementation time and the cost-effective

Screen your ammonium nitrate safely and without risk by using RHEWUM screening technology. Ammonium nitrate is considered to be oxidizing but cannot ignite itself - unless large quantities are close together. Then it starts to work and heats up. The ammonium nitrate catches fire. This releases oxygen and the fire spreads. In fertilizers, it may only be used in mixtures due to its latent danger. But what does this mean for screening? Possible risks that could arise during a screening process of ammonium nitrate are, for example, high dust generation, which can lead to dust explosions and damage to health. In conformity with the ATEX directives RHEWUM screening machines are equipped with a dust-tight housing with connection to a dust extraction system to avoid high dust concentrations. A further risk is the required vibration during screening. All moving parts of a screening machine (e.g. the excitation axles, springs or bouncing balls for cleaning the meshes) which come into contact with ammonium nitrate can potentially cause an effective force. This friction

French animal feed manufacturer gets suitable RHEWUM screening machine for screening of meat and bone meal. Animal meal is often added to animal feed as a source of protein and used as food for pets as well as zoo animals. Under strict conditions, it is also suitable as a fertilizer in agriculture. For the feed capacity of 20 tons of animal feed per hour the customer now receives a screening machine type WA with suitable feeder type SV from RHEWUM which replaces an outdated screening machine of another screening machine manufacturer. The separation is at 1 mm for removing lumps and impurities. The type WA is excellently suited for sieving powder and meal in the finest to medium grain range and can be easily integrated into existing plants. The direct transmission of the vibrations to the screen mesh via powerful electromagnets is not only energy-efficient, but also enables extremely high accelerations of more than 15 g and thus guarantees a sharp separation even when screening fine powders. Further convincing advantages of the Rhewum wa are the high availability and reliability.

RHEWUM supplied various asphalt mixing plant operators with new DF screening units for the season. In general asphalt is a mixture of minerals and bitumen as binder. In asphalt mixing plants asphalt mixes are produced by a thermal mixing process of mineral rocks, filler (rock flour), binder (bitumen) and if necessary additives for different requirements. Screening machines are required to classify the mineral rock for these processes. Like for example the Rhewum double Frequency Screening Machine (short DF) - a high performance unit for screening in the medium and coarse grain range. The drive principle of the DF is based on the use of two vibration motors with different speeds. The product is loosened and mixed at the screen inlet due to the large vibration amplitude. The higher frequency at the screen outlet causes even difficult to screen material to be screened due to the higher acceleration. By changing the direction of rotation of the vibration motors at the inlet and outlet, the transport speed of the product can be changed. Advantages include good accessibility

The leading Italian producer of building products expects two new vibratory screening machines. In the Fassa bortolo plants sixteen Rhewum wa screening machines, one Rhewum dfm and one Rhewum mds machine have been performing faithfully in the classification of dolomite, limestone and sand since 1991. For its plant in Brazil, the industry specialist requires screening machines that will be used in the future for classifying limestone and silica sand. The limestone to be classified has a nominal feed capacity of 60 t/h and a maximum of 70 t/h per screening unit, whereas with silica sand it is a nominal 30 t/h and a maximum of 60 t/h. The separation is 4.5 mm, 3.0 mm, 1.2 mm and 0.6 mm with a desired screening of maximum 140 tons per hour. Due to the requirements two screening machines of RHEWUM type WA with triple-deck screening unit and the 60 Hz mains frequency required for Brazil proved to be the optimal solution. Not only the very good quality of our screening machines is decisive for the customer. But also our many years of experience in the uncomplicated

Rudolf Landsmann is the new Senior Manager Modernization and Retrofit. RHEWUM screening machines usually have a long lifetime. But often the demands on the machine change during its lifetime. Therefore the machine has to be modernized (retrofit). Due to their long experience our screening experts of the RHEWUM retrofit team are able to realize the complex customer requirements and to make the RHEWUM screening machine fit for new tasks. After studying processing technology at the renowned TU Clausthal in Lower Saxony, Rudolf Landsmann started at Rhewum gmbH in 1987 as laboratory assistant and deputy laboratory manager of the Rhewum technical Center. There he accompanied the research and development of special machines which were then as now designed and manufactured specifically according to customer requirements. Rudolf Landsmann was also significantly involved in the further development of today`s multi-deck plansifter MDS and wet screening machine WAFL. In 1989 the graduate engineer changed to the sales department of Rhewum gmbH and

RHEWUM Screening Technologies for Glass Processing Glass can be found in almost all areas of daily life. Starting in the construction industry, through telecommunications, household, food, automotive and aircraft construction to optics. The ever-increasing demands on technical glass can only be met by using ever more precise basic materials such as quartz sand and soda. But also a variety of glass products such as glass wool, glass balls or other waste glass only become a saleable product through classification. RHEWUM screening machines are also used in the processing of glass. Glass production The technique of glass production has been known for over 6,000 years. It has been continuously refined until today. Since then, glass has been used in a wide range of applications and has become a versatile material. In general, every glass contains one or more glass-forming oxides. The most commonly used are silicon dioxide (SiO2), i.e. quartz sand, but also boron trioxide and phosphorus pentoxide. Classification in basic

RHEWUM will also build the vibration motors in-house in the future. The motors are compatible. We have made it our ambition to manufacture the best screening machines in the world. To achieve this, we also need the best vibration motors in the world. We have focused our in-depth expertise in screening and motor technology to make energy-efficient vibration motors even more reliable and stable, so that our customers can rely on a trouble-free production process. The result is our GeniusDrives. All key parts of the GeniusDrive are manufactured in Germany. Each of our self-produced unbalance motors is tested under full load before it leaves the production line. It is of utmost importance to us that the motors are perfectly matched to our machines and the needs of our demanding customers. Technical and other information can be found on the website of the same name. Order today and we promise you a fast delivery.

As an expert for screening machines RHEWUM has an answer First considerations in advance Before you contact potential suppliers, you should be clear about the general conditions for the new screening machine. Keep in mind that every increase in quality requirements leads to an increase in costs, as the required screen areas have to be increased. In production engineering, therefore, the basic principle is: as exact as necessary and as imprecise as possible. An often underestimated question is: Should the machine be planned into an existing building or is the building still to be erected? While directly driven screening machines hardly emit any vibrations and are therefore statically negligible, these must be taken into account with vibrating machines. The statics of the building must be adapted to the machine type and may become a cost driver. Experience has shown that vibrating screening machines at great building heights can cause lasting damage to weak structures. Furthermore, the height situation must often be taken into

RHEWUM presents solution for difficult screening tasks in the fertilizer industry Introduction Typical phosphate fertilizers have specifications that allow particle sizes between 2 mm and 4 or 5 mm. In addition, these products are often expected to have a quality of more than 90 percent, which means that only 10 percent of the particles may be outside the specialized range. On the other hand, phosphate fertiliser production plants have a production rate of several hundred tonnes per hour. Phosphate granulate tends to clog the screen meshes. If this occurs, production must be stopped to allow the meshes to be cleaned or replaced. The biggest challenge of a phosphate screening machine is therefore to obtain a high quality material with a high throughput while ensuring a low downtime for maintenance. Our solution - the WA(U) screening machine The concept of the Rhewum wa/WA(U) screening machine consists of directly excited screening meshes which are positioned at an angle to transport the material over the screen. The whole machine housing does not

The company BK Giulini from Ladenburg, Germany, which sells its products under the brand name ICL, used an old screening machine from RHEWUM to classify monosodium phosphates as well as sodium pyrophosphates. These mentioned phosphates can be found among others in food, cosmetics or also in metal surface treatment. For 50 years this screening machine type B27/180 has been in operation at BK Giulini. The high maintenance requirements in recent years have now prompted the company to replace the old machine. BK Giulini has again decided in favour of a screening machine made by RHEWUM as the good quality and reliability of these screening machines speak for themselves. The challenge this time was to maintain the supply and discharge assemblies and thus to manufacture the new screening machine with a perfect fit. As it is essential in the food industry that products are free of any contamination, the screening machine was manufactured from the high quality stainless steel

The trade fair for granulate, powder and bulk solids technologies will take place at the Dortmund Exhibition Centre from June 24-25, 2020. SOLIDS is part of the international Solids european Series (SES), which also stops in Antwerp, Rotterdam, Zurich, Krakow and Russia. Parallel to the bulk solids fair the sixth edition of Recycling Technology opens its doors in April in the Dortmund exhibition halls. At this year`s SOLIDS 500 exhibitors will present their technologies and solutions for the processing, handling, storage, transport and analysis of powders, granules and bulk materials. As the leading business and innovation fair for bulk solids technologies, SOLIDS combines a first-class exhibition in four exhibition halls with an attractive supporting programme and numerous networking opportunities. The high-quality lecture program and guided tours additionally enhance this fair. You will find us in hall 6 at booth R04 with our mobile screening machine WA(U). There

RHEWUM presents solution for difficult screening tasks in the fertilizer industry. Typical phosphate fertilizers have specifications that allow particle sizes between 2 mm and 4 or 5 mm. In addition, these products are often expected to have a quality of more than 90 percent, which means that only 10 percent of the particles may be outside the specialized range. On the other hand, phosphate fertiliser production plants have a production rate of several hundred tonnes per hour. Phosphate granulate tends to clog the screen meshes. If this occurs, production must be stopped to allow the meshes to be cleaned or replaced. The biggest challenge of a phosphate screening machine is therefore to obtain a high quality material with a high throughput while ensuring a low downtime for maintenance. Our solution - the WA(U) screening machine The concept of the Rhewum wa/WA(U) screening machine consists of directly excited screening meshes which are positioned at an angle to transport the material over the screen. The whole machine housing does not move while the

New sales representative for Southern Germany, Austria and Switzerland Since the end of 2019 Joachim Edinger is the new sales representative of Rhewum gmbH for Southern Germany, Austria and the German-speaking Switzerland. The main activity of Joachim Edinger Industrievertretungen from Leinburg in the Nürnberger Land, Germany, is the representation of companies supplying capital goods and technical equipment. Joachim Edinger always sees himself as a mediator between the interests of his customers and the suppliers he represents. Through a wide variety of contacts, for example in the chemical and food industries or the building materials industry, he has been able to gather valuable knowledge over many years in the field of test sieves, industrial sieves and screening surfaces. We at Rhewum gmbH are sure that our customers and prospective clients are in competent hands with Joachim Edinger Industrievertretungen and will benefit from his many years of experience. We are looking forward to our future cooperation.

For a manufacturer of wooden floors, a RHEWUM screening machine is the solution to increase efficiency. The laminate manufacturing process involves many steps. The biggest waste, however, occurs when the wooden boards are cut into planks. Both cut waste and sawdust are produced, which can hardly be sold as a final product. This was exactly the problem that RHEWUM`s screening machines were used to deal with in 2016, when one of the global leaders in wooden flooring and interior design relied on RHEWUM to recycle its waste and thus increase the overall efficiency of its production. The special challenge here was the separation of the finest sawdust from a mill. In general, wood-based materials tend to clog the screen cloth easily. During the screening process, the fine particles can get stuck in the meshes and reduce the screening performance. In this case, the customer`s grain spectrum was broad. From easily visible wood chips with a size of more than 10.0 mm, which have to be crushed again, to the screening of fine dust below 400 microns, which accounts for almost one

Sceening machines are indispensable in the potash production process. Potash is an essential building block of life. Together with nitrogen and phosphorus, potash is the third essential one. It supports plant growth, enzyme activity, protein formation, photosynthesis, respiration and the improved absorption of nutrients. Almost 95% of all potash produced is used as a fertilizer. Potash extraction Potash deposits, which are located at fixed positions and depths of up to 1400 m, are extracted by mechanised methods of underground mining. When underground extraction is no longer feasible due to the depth of the deposits and/or when water inflow problems hinder conventional underground mining, the extraction of salt domes is used. Solar evaporation of brine containing natural potash is the third method of extraction. Screening technologies in the potash industry Screening machines are required at various points in the processing chain. Starting with the extraction, because the mineral extracted from the mines is first crushed and then pre-classified.

The most important annual meeting in the fertilizer, industrial phosphate and feed industries. The CRU Phosphates Conference will be held in Paris from 8 to 10 March, 2020. More than 400 delegates of the global phosphate supply chain from 40 different countries regularly attend the conference. This year`s agenda will focus on presenting the latest market updates and technical innovations. In 2019, there was oversupply in the global market, which was accompanied by a decline in global demand and pressuring prices. Industry experts will share their views on the prospects for demand growth and price recovery as well as market developments in 2020 and beyond with the conference audience. There will also be technical papers and presentations specifically designed for operators in the mining and plant sectors. The aim is to share experiences, develop solutions to operational challenges and learn how new developments of technology, process, material and equipment can improve efficiency, environmental compliance and productivity. As an expert for difficult to screen

Quality improvement of metal powder for 3D printing From 19 to 22 November 2019 the formnext - a global trade fair for additive manufacturing and modern industrial production - will open its doors for the fifth time. Get free tickets from RHEWUM. More than 285 exhibitors from 29 nations will meet at the Frankfurt Exhibition Centre. formnext offers interested trade visitors an exciting combination of trade fair and conference. This provides the opportunity not only to obtain information at the exhibition stands, but also to participate actively in the exchange of knowledge on the latest solutions in the field of additive manufacturing. RHEWUM will be available for you at booth A139 in hall 12.0 presenting our mini-sized MDS screener with 100 Hz drives and the compact screening machine PowderJet400, which operates on the principle of batchwise air jet screening. Do you want to learn more about achieving the desired quality of your metal powder and remove all impurities, undersized particles, dust and agglomerates? Bring

From 01 August 2019 Spanish RHEWUM customers will be served by Lödige España SA. From 01 August 2019 Spanish customers and interested purchasers of RHEWUM screening machines and conveyor systems will be served by our new partner Lödige España, SA based in Barcelona. In order to guarantee international customers the best possible customer service and to provide a direct contact person on a regional level, RHEWUM relies on competent cooperation partners worldwide. In Spain, this service will in future be offered by professionals from the company Lödige España, SA. The company was founded in 1973 as a subsidiary of the German industrial company "Gebrüder Lödige Maschinenbau GmbH" and now represents a wide range of machine and plant manufacturers in the field of process engineering for solids, granulates, powders, dusts, pastes and slurries. "We are looking forward to working with the established quality-oriented manufacturer RHEWUM and are confident that we will be able to offer customers in the Spanish market further added value by expanding

Polish RHEWUM customers now serviced by ENERWIS Anyone in Poland who is interested in a RHEWUM screening machine in the future will be professionally advised in Polish by Marek Jankowski of ENERWIS. The Polish economy has developed remarkably since the 1990s. Since its entry into the EU, the country has also become increasingly attractive for foreign investors, which has contributed, among other things, to a consistently positive economic growth in recent years. Germany is by far the most important trading partner, accounting for 28 percent of total Polish exports and 22 percent of total imports. With a trade volume of 119 billion euros, Poland ranks sixth among Germany's largest trading partners. In order to be able to continue optimally serving this growing and important market, RHEWUM is now working together with the local company ENERWIS. The Warsaw-based consulting company with 100 percent Polish capital has numerous references in the field of renewable energies, gas technology as well as metallurgy. This technical

The hygroscopic characteristics of urea often lead to clogging of the screen cloth As the consumption of food increases worldwide, so does the demand for fertilizers. For these reasons, one of our customers has opened another plant for the production of urea fertilizers. He relies on the high quality and efficiency of RHEWUM screens. The hygroscopic characteristics of urea can lead to lumping and clogging of the screen cloth, which has a negative effect on screen efficiency. As a pioneer of directly excited screening technology, we understand this problem and attach great importance to screening machines with automatic mesh cleaning mechanisms. For the classification of urea granules, we use double-deck screening machines with an integrated lump screen to gently remove the lumps produced during the upstream process. We have designed 4 Rhewum wau screening machines which screen in 4 fractions: lumps (larger than 15 mm), coarse particles (4 - 15 mm), main product (2 - 4 mm) and fine particles (smaller than 2 mm). In order to guarantee a constant distribution

16.-19. September 2019 ► Screening technology for the chemical industry at KHIMMIA From 16 to 19 September Moscow will host the KHIMIA, an international trade fair for the entire field of the chemical industry, for the 22nd time. First held in 1965, the fair offers manufacturers, service providers and suppliers of the international chemical industry a professional opportunity for the dialogue on trends, developments and experiences in their demanding environment and strengthens the relationship between Russian and foreign companies in the sector. More than 415 exhibitors from 23 countries will present their latest solutions on an area of more than 24,000 square meters. One of the key topics is chemical engineering, where screening machines and conveying systems are indispensable. What is actually important when selecting a screening machine? What is the most efficient screening solution for your specific requirements? How can you achieve maximum output with consistently high quality? Whether manufacturers of fertilizers, polymer materials, color

Avoid dust explosions with RHEWUM technology A dust explosion can have devastating consequences. Especially in the USA, the number of grain dust explosions in 2018 increased by more than 70 percent compared to the previous year. When a dust explosion occurs, entire production facilities are usually destroyed. What remains are expensive damages, injuries or even fatalities. In 2017 the number of grain dust explosions in the USA was only 7. In 2018 the number increased up to 12 (Source: news.bulk-online.com). In a dust explosion the particle size is critical, i.e. the explosive potential increases with decreasing size. Size reduction results in very large surfaces, whereby the dust particles oxidize very quickly on the one hand and absorb ambient heat very well on the other hand and can ignite themselves. In order to avoid such devastating dust explosions, it is very important to keep the screening plant dust-free, to ensure that the staff on site is well trained and that the equipment is properly maintained

RHEWUM GmbH at the ESST Congress 2019 from 26 - 29 May 2019 in Poznan, Poland From 26 - 29 May 2019 we will be exhibiting as a sifting expert for sugar at the 6th congress of the European Society for Sugar Technology (ESST) in Poznan, Poland. Come and visit us at booth no. 2. This year's ESST conference and exhibition will focus on topics such as beet quality and its impact on the sugar production process as well as digitization and green energy in the sugar industry. We will be on site as screening experts with our mobile WA(U) 50x100 sifter, demonstrating the benefits of direct excitation of the screen cloth during sugar sifting. RHEWUM has always been looking for the perfect solution. With us you not only get a product, but a solution that is perfectly tailored to your needs. Let our sifting experts on site advise you on your challenge. Do you have any questions? Get in touch with us. We are looking forward to your inquiry.

For dust-free sieving of large volumes of fine to very fine powders. When sieving or classifying very fine material two problems often occure: - Powder that gets stuck in the meshes of the screen cloth, reducing the capacity of the screen. - A lot of dust is blown into the production area Rhewum has solved both these problems with the WAF powder sieve. In the WAF powder screens, RHEWUM combines two movements: 1.The screen cloth is directly exitated from below by knocker bars (like in the Rhewum wa machines). So the screen goes up en down. 2.At the same time, two motors, rotating in the opposite direction, ensure a linear movement of the screen (as is the case with a vibrating feeder). The linear movement ensures the transport of the powder over the sloping screen cloth. In the meantime, since the screen cloth is frequently struck from below, the powder particles constantly jump up, and the particles that have settled in the screen holes are loosened. As a result of this direct exitation of the screen, the screen cloth remains

With a mobile Rhewum wa(U) screening machine across India. After the successful roadshow in India last year, our subsidiary RHEWUM india Pvt. Ltd. has again planned a roadshow through India this year. If the customer cannot come to the screening machine, we just come to the customer with the screening machine - that was the idea of a mobile Rhewum wa(U). This has already enabled us to carry out a successful roadshow in India last year. Various companies from the fertilizer, sugar and sand industries were visited. Since the transfer of theoretical know-how and the demonstration of practical examples for screening fertilizers, sand and sugar were very well received, we have planned a continuation for this year. In the first stage, at the end of December and beginning of January, companies from the fertilizer and sand industry were visited. In the fertilizer industry, we were able to achieve excellent screening results in the screening of NPK fertilizers with 4 mm and 1 mm separation cuts. We were also able to successfully

Tailor-made service contracts from RHEWUM Do you want to prevent expensive repairs and production downtimes? Optimal maintenance and servicing are the answer! This ensures a long service life and value retention of your machine. With larger new purchases, both in the private sector and in the profession, you are often faced with the decision of how much you want to invest. One of the most important decision criteria is the price. We know: An investment in good service saves high follow-up costs. For us, service means being at your side at all times with our know-how, developing solutions quickly and implementing them effectively. This is characterised by the fact that we draw up a service contract tailored to your needs with adapted maintenance intervals. Because our claim in service is to always be one step ahead in order to exceed your expectations. Optimum maintenance is the key to success and thus gets the greatest possible potential from your RHEWUM screening machine. Do you have any questions

Visit us as usual in hall 1, booth 342. POWTECH is the world’s leading trade fair for mechanical process engineering, where we will be represented again this year. This year’s fair is about innovations and problem solutions around the production, processing and handling of powder, granulate and bulk material. As screening experts, we will also be there - with a new appearance! Come and visit us and have a look at our MDS in small format (500/700 x3), our SC spiral conveyor, as well as our carbon conveying tube. We look forward to your visit and to being able to advise you on your screening processes. You can find us as usual in hall 1, booth 342.

Theme ”The recent advances in the drying, sorting and packaging of sugar”. On 14 February 2019, a full-day seminar on the topic ”The recent advances in sugar drying, sorting and packaging” was held in Dehradun, India. RHEWUM GmbH & its subsidiary RHEWUM India Pvt. Ltd. gave presentations on technologies for sifting sugar and were able to demonstrate the technology directly on site with a mobile RHEWUM WA(U) sifting machine. Sugar sorting plays an important role in determining sugar quality in relation to grain size and can lead to a better price on the market with uniform grain sizes. For bulk consumers, the dry mixing of sugar is energy efficient compared to the wet process. The constant sugar grain size is very important for the dry mixing process. Efficient sorting also optimizes product performance and seed recycling. In times of constantly rising production costs and strict environmental and food safety standards, the optimization of sugar plants with clean and efficient processes is an important factor for remaining profitable.

YARA in Rostock is now screening calcium ammonium nitrate with RHEWUM screening machines. Calcium ammonium nitrate (CAN) is a popular nitrogen fertilizer in agriculture for plant nutrition. Due to the difficult screening characteristics of CAN, YARA in Rostock has again opted for RHEWUM technology to expand its capacity. When increasing the capacity, our customer duplicated the existing screening line. In addition to the increase of capacity, this also results in increased availability. The new screens were modernized and modified together with the customer along with his accumulated experience and are thereby optimally adapted to the plant, which achieves a flow rate of up to 350 t/h. The construction of the plant will be realized in two stages. In the first stage, RHEWUM DF course screens with downstream RHEWUM RIUS are used (screen cut 5.0 mm). RHEWUM WA fine screens (screen cut 3.2 mm) remove the fine dust in the second stage. Several special features of the machines were taken into account during the implementation of the project. Due to the abrasive

Simplified operation and downward-compatible functionality and size! The WA6 is the most modern component for your directly excited RHEWUM WA screening machine due to its simplified operation and its downward-compatible functionality and size. You have full control over the screening process. Since we have developed our WA screening machines, we have also continuously improved the components we use for electronic control. With the help of this module you can control the intensity of the WA vibration heads, which transmit the vibrations directly to the screen cloth. With the WA6 module, you can perfectly adjust the WA screening machine to your screening product. You can regulate it either on the device in the control cabinet or remotely from a distance with a setpoint value specified by the process control system. The cleaning impulse can also be individually adjusted and ensures that the screen cloth cleans itself at regular intervals. Adjustment and operation are now even easier thanks to an LCD display with optimized menu navigation.

RHEWUM screening machines in operation to screen potassium polyphosphate. The company BK Giulini based in Ludwigshafen had two RHEWUM screening machines type WAN in operation to classify potassium polyphosphate, a food additive. These screening machines required more maintenance in the last years of operation (35 years in operation so far). With the procurement of new screening machines, BK Giulini again relied on the current screening technology, the good quality and reliability of RHEWUM GmbH. The new high-performance screening machines type WAU significantly optimize both the classification (separation at 1.0 mm) and the maintenance. Due to the high radiation heat caused by the high product temperature, insulation of the machine walls and additional cooling of the external drives were installed. In addition, there was the challenge of retaining the infeed and outfeed components, which meant that the new machines had to be manufactured to a precise fit. These conditions and the fact that only a few standard components could be

One of the world’s leading suppliers of nitrogen-based fertilizers relies on RHEWUM One of the world’s leading suppliers of nitrogen-based fertilizers optimizes its screening processes with RHEWUM machines. One of the end products, CAN (Calcium Ammonium Nitrate), known for its versatility in use, e.g. as preferred application for acid soils, is a widely used fertilizer. However, because of its hygroscopic property it depicts a problem for conventional screens, as they clog quickly. RHEWUM was entrusted with the task of classifying this fertilizer efficiently and precisely into two fractions. Therefore the producer has been using vibration screening machines of the type RHEWUM WA since 2015, which prevent the agglomeration of the particles through their high frequency and the direct excitation of the screen meshes. The anticipated quantity of bulk material of 400 tons per hour, is classified in the fractions of 2.5 millimeters and 4.5 millimeters. Essential for an efficient handling of such amounts, is an optimal distribution over the entire

How does the choice of separation cuts of your screening machine affect the results? Test how the selection of the screen cuts of your screening machine affects the results of your screening process. The new RHEWUM Screen Efficiency Calculator determines the respective purity and yield quickly and easily – without irritating formulas. Every producer aims to extract the greatest possible quantity of his product from the feed quantity without sacrificing the high level of quality. So in the ideal case yield and purity should both be 100 percent. But in practice, this is not technically possible and therefore testing is required to choose the right screen cut for your screening machine in order to extract a product with high yield and at the same maintaining the required purity. The RHEWUM Screen Efficiency Calculator uses the grain size distribution of your feed material, the chosen screen cuts and also the efficiency of the used screening machine to calculate not only the yield and purity, but also the massflow of the different fractions and to

This year RHEWUM GmbH equips the smallest players. This year RHEWUM GmbH equips the smallest players of the handball club of a sports club in Lüttringhausen with jerseys. RHEWUM GmbH encountered great joy and gratitude among the F-Youth handball team. Already three years ago the RHEWUM GmbH has donated jerseys to the B-Youth handball team. This time we supported the smallest players of the club. During our visit of the F-Youth handball team during the training we were warmly welcomed with the new jerseys. We were told that the jerseys had already brought luck in the first use and led to a victory! We wish the players much success this year and a positive development as a team.

On Friday, 21 December 2018, the last German colliery was closed in Bottrop. On Friday, 21 December 2018, the last German colliery wa closed in Bottrop. We wish the miners ”Good Luck!” for the future. All of Germany looked to Bottrop at the end of 2018. After a long tradition the last colliery in Prosper Haniel in Germany has been closed on Friday, 21 December 2018. Thus a long tradition-rich occupation and era came to an end. On the occasion of the closure, an ecumenical service has been held in the Essen Dome, to which the patron saint, the holy Barbara statue, has been brought from a depth of 1,200 metres and to thank the miners for their many years of work. The patron saint was often depicted on miner’s lamps. Such a petroleum lamp, like the one here from RHEWUM, was a duty for the miners to find their way outside in case of a electrical breakdown.

Every year RHEWUM GmbH is committed to non-profit associations in the Berg. City triangle. Every year, the employees of RHEWUM GmbH and the Management are committed to non-profit associations at the Bergisch city triangle production site. In 2018, the donation of 2,000 euros went to the medical child protection centre (German: ärztliche Kinderschutzambulanz e.V.). The Workers Council and Management met with Dorothea Schauf on 18 December 2018 to present the donation cheque. The Remscheid-based association supports children and young people who are affected by physical abuse, neglect and/or sexual violence on a daily basis or who are suspected of such abuse. With the donation we want to take the financial pressure off this great association and wish it all the best for the future.

From 05 to 07 December 2018 our subsidiary RHEWUM India Pvt. Ltd. participated. Last year’s seminar dealt with the topic ”Making Fertiliser Industry Viable and Vibrant”. As a result of the increasing production of cereals and fruit and vegetables, the sustainability of production must be taken into account much more closely in the face of declining acreage and decreasing water resources. At the same time, the variation of fertilizers is becoming increasingly important for agriculture in order to make them sustainable. This year, the FAI (Fertilizer Association of India) Annual Seminar offered the opportunity to discuss key issues with decision-makers from government, industry and other stakeholders. Through our know-how in the processing of phosphate, NPK, nitrogen and potash fertilizers, we made our contribution to the FAI Annual Seminar.

On the 17th and 18th October 2018 the trade fair SOLDIS Antwerp took place This year we were represented twice at the SOLIDS (SOLIDS Dortmund). About 120 enterprises will presented their latest products and solutions for the handling and processing of granulated materials, powders and dry bulk goods in Antwerp. We were located in hall 4, booth A 024 with our screen recirculation system consisting of mobile WA (U)-sieving machine, high-speed conveyor tube and spiral conveyor type SC.

On the 07th and 08th November 2018 the trade fair SOLIDS also took place in Dortmund This year we were represented twice at the SOLIDS (SOLIDS Antwerp). On the Dortmund fairground 500 companies presented their latest products and solutions for the processing, handling and storage of fine-grained to coarse-grained materials. The special: Dortmund SOLIDS illustrates the whole value chain of the branch. We presented our screen recirculation system consisting of mobile WA (U)-sieving machine, high-speed conveyor tube and spiral conveyor type SC.

Free tool for calculating purity and yield Test how the selection of the screen cuts of your screening machine affects the results of your screening process. The new RHEWUM Screen Efficiency Calculator determines the respective purity and yield quickly and easily – without irritating formulas. Every producer aims to extract the greatest possible quantity of his product from the feed quantity without sacrificing the high level of quality. So in the ideal case yield and purity should both be 100 percent. But in practice, this is not technically possible and therefore testing is required to choose the right screen cut for your screening machine in order to extract a product with high yield and at the same maintaining the required purity. The RHEWUM Screen Efficiency Calculator uses the grain size distribution of your feed material, the chosen screen cuts and also the efficiency of the used screening machine to calculate not only the yield and purity, but also the massflow of the different fractions and to

From 16th – 18th October 2018 SEPEM Industries organizes also this years VRAC TECH About 300 companies will present their product portfolios on the fairground ”Parc expositions de Mâcon”. The subjects security, connected machines and the yield concern all enterprises of the bulk industry and, therefore, is center of the three-day-long exhibition. After a successful participation last year, we will also be at the VRAC TECH this year. Come visit us and our competent colleagues. We are happy to consult you about our needs-oriented sieving technologies which you can experience with our mobile MDS 500x1400/4 sieving machine immediately in the application. The sieving machine MDS is constructed in a modular system, so that it can be put together individually. You can find us in hall A, booth A12.

Driving with a screening machine on a truck across India? We’re doing it! In April, we started our roadshow across India to show our customers and prospect the performance of our screening machines. The first stage is now behind us and was a complete success. We were able to present our versatile RHEWUM screening technology to 15 companies from the fertilizer, sugar and sand industry. With our WA (U) mobile screening machine, our colleagues in India have not only provided their hosts with theoretical know-how, but have also been able to give hands-on examples of screening fertilizers, sand and sugar, and that’s what counted. In this way, we were able to show one of our customers in the fertilizer industry how he can increase his phosphate screening productivity by 25% without having to change existing processes. With considerable savings in electricity and maintenance costs, as well as a screen purity of around 97% (i.e. in the case of material <150 microns), we exited our customer. Various sand producers also received demonstrations

Take a look behind the scenes of RHEWUM on 12 September 2018. Those who are interested in learning more about the separation of bulk solids and the operating principles of screening machines and vibrating feeders, are kindly invited to take a look behind the scenes of RHEWUM on 12 September 2018. As an interest group the German Powder and Bulk Association (in German: Deutscher Schüttgut-Industrie Verband e.V., abbreviated: DSIV) brings together individuals and companies that are working in the fields of production, warehousing, transportation and handling of bulk solids. Since its foundation in 2012, the DSIV has regularly been gathering its members for exchanging opinions and experiences and has also been offering informative professional events. Screening technology plays an important role when processing bulk solids as it significantly influences the quality of the final products. RHEWUM has been planning, constructing and manufacturing screening machines and vibrating feeders at its own site in Remscheid for more than

Video series about screening and classifying As a specialist when it comes to industrial screeners, we would like to share our knowledge and are therefore starting a video series which answers questions from the field of screening and classifying quickly and comprehensibly. Have you ever wondered why screeners are inclined? Dou you know the differences between dedusting, classifying and protection screening? And what has explosion protection to do with industrial screeners? These questions and many more will now be answered by Mr. Prof. Dr.-Ing. Albert Daniels (Professor of Mineral Resourcing Extraction at the Technical University Georg Agricola) in our weekly published YouTube-Videos. Check our YouTube channel regularly or directly subscribe to our channel at www.youtube.com/rhewumgmbh. Here you can already see what questions will be illuminated in the following 12 weeks: What role does the inclination of the screening machine play? Why does one require different screening machines for different products? What

RHEWUM sponsors student excursion With the financial support of RHEWUM and other sponsors from the mining industry, students from the field of Raw Materials Engineering of the Technical University Georg Agricola (THGA) traveled about 2,800 km through the sixth largest economy of Southeast Asia. Vietnam is considered one of the emerging economies of Southeast Asia with good economic prospects. Stable economic growth, a relatively cheap and well-educated workforce and political stability offer attractive conditions for investors. With a share of around 6.5% of the gross domestic product, mining is now Vietnam’s fourth-largest economic sector and continues to gain in importance. With the aim to visit mining sites in the northern and central parts of the country, the students of the THGA started their excursion to Vietnam in April. Above all, the focus was on mining of hard coal, apatite, copper, limestone and heavy minerals. To obtain practical impressions, the students visited in addition to the

Screening machines for mining by RHEWUM From 17 to 19 April 2018 you can meet RHEWUM GmbH in Moscow. We present our screening solutions for coal, ores, slags and minerals in Russia. The mining of minerals is a great challenge for man and machine, as it represents a complex process. For optimal results, it requires reliable equipment for exploration and processing as well as transportation of minerals and mine safety. The international trade fair gives manufacturers of machinery and equipment for mining, processing and transporting minerals and metals the opportunity to inform about the latest trends, technologies and projects in the mining industry. The 22nd edition of the MiningWorld Russia expects around 4,175 visitors from Russia and abroad: An excellent opportunity to cultivate existing business contacts and make new ones in addition to the exchange of experts. Besides the exhibition, there is also a developed business program, with seminars on different topics of the mining industry. We look

Not every customer or prospect has the opportunity to see our screening machines at trade fairs or exhibitions and so we came to the conclusion that the machine has to come to the customer. From 9 April to 15 May we are going to let our prospects in India experience our screening equipment. Although, after RHEWUM founded its subsidiary RHEWUM India Pvt. Ltd. in 2017, our Indian customers are served by our local sales and service department as well as manufacturing partners on site, we would like to maintain the relationship also from Germany. With our mobile screening machine WA(U), we tour and visit new and existing customers to show them the latest trends and techniques, to advise our customers on the profitability of their equipment and to keep them up-to-date in terms of screening technology. We are looking forward to an exciting time in India!

Residues of packaging waste found in sea salts On behalf of the NDR-consumer magazine “Markt”, Scientists at the Institute for Biology and Chemistry of the Sea at the University of Oldenburg have examined samples of the most popular Fleur de Sel brands. The results are concerning. After English scientists were able to prove the contamination of sea salts by microplastics last year (see article dated 10.08.2017), the NDR turned its attention now to the analysis of different varieties of Fleur de Sel and compared them with conventional sea salts. Fleur de Sel is considered as the noblest and most expensive sea salt, because it is skimmed by hand from the water surface. All the more frightening are the results of the current study for consumers: The content of microplastics in all samples was between 130 and 1,800 micrograms per kilogram. In one case, plastic fibers were even visible to the bare eye. In the conventional sea salts tested, ”only” 14 to 59 micrograms were found. The residues found are

From 20-23 March 2018, RHEWUM presents efficient screening solutions at the ANUGA FoodTec. Every three years the international supplier fair for the food industry offers decision-makers of this sector an ideal platform for information and purchasing. Anuga FoodTec is the only trade fair in the world which covers the entire spectrum of food production – even across all food industries. More than 45,000 professional visitors from 139 countries took the opportunity in 2015 and enquired the1,500 exhibitors about the newest developments and possibilities from the following areas: - Process technology - Packaging technology - Automation, controlling and regulation technology - Safety and quality management - Operating materials and environmental technology - Ingredients - Components and accessories - Services firms, organizations and publishers RHEWUM develops and manufactures machines for the entire field of screening, sifting, dedusting and classifying especially of sugar, salt, ground cereal products and other powdery food products, fruit and vegetables

RHEWUM participates with an expert presentation at the conference in Morocco From 12 to 14 March 2018, the well-known conference of the phosphate industry will take place for the 11th time in a row. RHEWUM advises on screening technology in the phosphate sector on site. Already in 2012 the CRU Phosphates conference has taken place in Morocco and has been a successful event with 500 international industry experts. This year, the conference will once again be held in Morocco, the country with the world’s largest phosphate reserves and leading phosphate exports. The international conference will provide decision-makers from various areas of the fertilizer, feed and industrial phosphate sector with important insights and detailed market information on raw phosphates, as well as on intermediate and end products. In addition to an exhibition, the conference includes a comprehensive lecture program, which covers commercial and technical topics. RHEWUM participates with an expert lecture, which will inform about screening technologies in the

Renewable energies are today more important than ever. SUEZ focuses on sustainability and therefore produces high-quality biogas and compost! In Montpellier, SUEZ supports its subsidiary Amétyst with 10 million euros for the development of its processing plant for domestic waste and biowaste with the aim of increasing the process capacity as well as the product quality. After optimizations, including in the field of methanation, SUEZ concentrates on the issue of efficiency and compliance with regulatory standards for compost production. For this purpose Amétyst uses RHEWUM screening machines type WA with feeders type AV at the end of the separation process. After the organic waste has completed various procedural steps and has been treated for 2 to 3 days in a bioreactor, the fraction of 0- 20 mm is separated from it by using four screening machines with direct excitation of the screen cloth (see video from minute 1:10). These screening plants have been specially developed for the integration into the production

Employees of RHEWUM collected donations for a good cause during the pre-Christmas season As in past years, the employees of RHEWUM collected donations for a good cause during the pre-Christmas season and thereby help to ensure that children from low-income families at the local schools in Remscheid get a healthy breakfast and lunch. Since 2006, the association known as “Möhrchen” (=baby carrot) has supported children at primary and secondary schools as well as schools for children with learning difficulties whose parents cannot afford their meals. By offering a balanced breakfast and warm lunch, these children have the opportunity to attend the classes with much more concentration and power. This year, “Mörchen” became 11 years old and can be proud of having enabled 1 million meals to children in Remscheid. Like in the year 2016, RHEWUM’s staff has collected eagerly for this local association. The donation has been doubled by the management so that a sum of 2,000 euros can be given to the children at Remscheid’s schools.

In addition to the durable unbalanced motors that are normally used at RHEWUM, the company now offers two special series. These two series were especially optimized for use in their respective fields. The first one is a high frequency drive (type HF) that can be operated with a power frequency of 100 Hz instead of 50 Hz or 60 Hz whereas the other is a long-life drive (type LL) that has a significantly higher service life than common unbalanced motors. With the special design, now patent-pending, the drives and bearings “keep a cool head”. In comparison to other drives, the RHEWUM long-life motors have a reduced temperature of up to 10 degrees Celsius by contrast with the environment. What is the benefit? A lower temperature of the bearing automatically increases its service life which has also a positive effect on the life cycle of the entire drive. Due to the use of usual RHEWUM foot dimensions, the RHEWUM long-life drives are absolutely equivalent to their counterparts. Scien

GUPA - responsible for Italy and Switzerland As of July 2017 our customers in Italy and the Italian-speaking part of Switzerland are exclusively served by the company GUPA. The multilingual team represents leading foreign firms from the sector of polymer processing and the bulk solid industry. The company, which was founded in 1970, is specialized in distributing high-quality machinery and equipment that is in accordance with the latest technological standards and usually protected by patents. The large representative pool enables GUPA to offer its customers an excellent mixture of highly competitive technologies. RHEWUM has a very positive outlook for the joint cooperation and is looking forward to the competent consultation and service for its Italian and Swiss customers as well as those interested in its screening equipment. If you have any questions, do not hesitate to contact the GUPA Srl directly: Via R. Bertieri, 2 - 20146 Milano (MI), Italy Telefon: +39 02 48952242 E-Mail: customerservice@gupa.it

Practical assistant for calculating mesh sizes and screen cuts The RHEWUM MeshConverter smoothly translates specifications for mesh sizes into DIN, ASTM, TYLER and Inch – no irritating conversion table necessary. Furthermore, app users can calculate the screen cut depending on the inclination of the machine. This only requires the indication of the mesh size in millimeter or inch and the incline of the screen lining. For perfect screening results use the RHEWUM MeshConverter - on our website or in our app.

Article by Sigurd Schuetz - RHEWUM GmbH The requirements of the premixed plaster industry for the production of up to five sharp-sized fractions mean dealing with various processes in order to meet the needs of this difficult to screen material. The requirements of the premixed plaster industry for the production of up to five sharp-sized fractions mean dealing with various processes in order to meet the needs of this difficult to screen material. An Italian manufacturer of different grain sizes for well-known producers of premixed plasters approached RHEWUM with the objective of sizing 80 t/h crushed dolomite flour into the fractions 10.0 mm, 3.5 mm, 2.25 mm, 1.6 mm and 1.0 mm. The moisture and the clay content cause trouble in the processing. Tests showed that screening cloth of applicated linear motion vibrating screens blinded immediately (see figure below). The optimal solution in this case was a combination of different processes: The feed material is separated at 10.0 mm in the feed section on co-vibrating

When sieving moist and adhesive materials, screen cloths can easily get clogged. Our electrical screen cloth heater allows heating the surface to over 100 degrees Celsius. This temperature keeps the screen cloths open despite of moist fine materials. These dry onto the cloth and spall due to the extremely strong vibration of our electromagnetic drives. That way the screening surface remains open! This technology is particularly suitable for moist and adhesive materials such as fertilizers or naturally moist sands. The screen cloth heater can be used for all static machine types, but only with stainless steel meshes. In order to adjust the energy requirement, the heater can be manually controlled. The isolation of the side walls and the automated monitoring of the temperature ensure the safety of your business operation. Plug connectors allow a fast and easy exchange of the screen cloth. More on: http://bit.ly/2o0r3g9

RHEWUM high efficiency screening machines for sugar RHEWUM was faced with this task by the Indian Cane Power Limited (ICPL). For this purpose a screening plant with a combination of the type RHEWUM WA and RHEWUM WAU was delivered to India. The fed 300 tons per hour are precisely classified by only two RHEWUM sieves into the five required fractions of 1.80 mm/ 1.20 mm/ 0.80 mm/ 0.45 mm and 0.25 mm. The electromagnetic drive that is specific to RHEWUM is particularly used for the fine separations of less than 1 mm, whereas the low-maintenance WAU drive is used for separating fractions of 1.80 mm and 1.20 mm. The screening plant is loaded by two SV feeders that each evenly distribute 150 tons of cane sugar per hour on the post-positioned screening machine. The discerning customer chose a high quality stainless steel design. The ICPL was just founded in 2002 and has been growing since then from year to year thanks to the close collaboration with the local farmers, who provide the required sugar cane seeds. The plant

Specific knowledge from A to Z What is an eccentric? How works a Banana Screen? And what means warp? Get more information in our glossary about the topic sifting and screening now: http://bit.ly/2h99nOC

For the vertical transportation of different solids The RHEWUM vibrating spiral conveyor type SC is suitable for the transportation of bulk solids from different production processes. A product handling can be realized with the double bottom of the conveyor. It is possible to either heat, dry or cool the products during transportation. See more at: http://bit.ly/2lMn1cl

From 14th to 16th February 2017 - exhibition for bulk material The EXPOSOLIDOS – El Salón de la Tecnología y el Procesamiento de Sólidos (salon for the technology and processing of solids) – is the most important fair on powder and bulk solids in Southern Europe and takes place every two years to inform about the sector of transport, measurement technology and handling of bulk solids. It takes place from 14th to 16th February in Barcelona (La Fraga de l’Hospitalet). The perfect meeting point for business and networking! In collaboration with our representative Envisolid S.L., one of our RHEWUM specialists advises you on-site regarding screening technology and classifying. We are looking forward to your visit at our association booth No.141E!

Control screening for ensuring the product quality of fertilizers Mixed fertilizers such as NPK or LAN (Limestone Ammonium Fertilizer), which is called CAN (Calcium Ammonium Fertilizer) in Europe, are subject to changes of the grain distribution caused by transportation or temporary storage after granulation. Due to the hygroscopic behavior of the fertilizer, agglomerates (lumps) are formed during storage. Whereas the transport produces abrasion that appears as undesired dust in the packaging unit. Both lead to difficulties in spreading the fertilizer. The end customer recognizes these unfavorable product features immediately with the unaided eye without performing measurement of the grain distribution. However, the particle size distribution is a guaranteed quality characteristic of the product. In order to avoid expensive claims, more and more fertilizer producers start installing a so-called control sifting directly before loading or packaging. This ensures that the guaranteed product quality is given at the time of handing

New feature, new name, well-tried benefits The technical RHEWUM app has been renamed to „RHEWUM ScreenSpector” and offers operators of screening machines now the possibility to apply their own template for the SizeChecker feature. Already since 2014, the RHEWUM app supports its users during maintenance of their screening machines- simple, fast and free of charge. The app consists of the four following functions: 1. VibFlash The smartphone’s flash light generates a stroboscopic light with a predetermined frequency and thereby visually records and investigates the vibrations of the respective plant. This feature is only available for iOS so far. 2. MeshConverter The MeshConverter allows to convert screening mesh widths from S.I. units into US measurement units. Furthermore, this feature can convert mesh sizes into screen cuts. 3. VibSonic This feature uses the integrated microphone and records noise emissions of individual machines or plants. Compliance with noise level limits as well as functional

- is now available at the App Store Finally, the third function of the RHEWUM ScreenCheck App is now available at the App Store. The new SizeChecker App enables you to determine the size of particles by using the camera of your smartphone. Take a picture of the particles of interest and you will receive all important informations of the grain size distribution. These and the other great functions of the App are not limited to bulk goods so give it a try! The App can be downloaded and installed free of charge at the App Store.

The newly developed RHEWUM App for the iPhone has been introduced in the Apple Store RHEWUM decided to combine three helpful technical functions for operators which are handling bulk materials together in a single App. The App can be downloaded and installed free of charge at the App Store. It supports you to maintain your screening machines. Needless to explain that the functions can be used in many other applications as well. The RHEWUM ScreenCheck App consists of three parts: 1. RHEWUM VibFlash 2. RHEWUM VibSonic and 3. RHEWUM SizeChecker The VibFlash uses the inbuilt photo flash of the Apple iPhone and generates light pulses at a predefined frequency. It allows you to investigate structural movements for any high frequency moving equipment at a frequency between 16 Hz and 60 Hz. At the same time you can also measure the rotation speed of any shaft as well. The VibSonic App uses and calibrates the inbuilt microphone of the Apple iPhone. It measures the sound pressure of any equipment (not only screening machines) related to its

From 30.09. to 02.10.2014 RHEWUM takes part in POWTECH 2014 in Nuremberg. Our modern machines process any kind of powder, granulate and bulk goods. In this wide field of application our main focus lies on mechanical process engineering. This is not only the basic procedure e.g. for chemical industry and pharmacy, but the mechanical process engineering will gain more and more importance for the extraction of renewable raw materials. RHEWUM already has identified the POWTECH as a platform for future technology long years ago. We invite you to visit us at our booth 1-342 in hall 1! The RHEWUM team is looking forward to welcome you!

Take a look at our screening machines types WA and MDS SAMOTER is the main Italian event dedicated to earth moving, site and construction machinery and brings together the most important world producers and operators in the construction market. The trade fair enables to build up and develops lasting trade relations. The event is also a first choice when wanting to participate at a varied conference programe. We invite you to visit us at our booth D 15 in hall 9!

After Roquette France and Roquette China, the world-renowned company Zhejiang Huakang Pharmaceutical Co., Ltd. now completely relies on RHEWUM sieving technologies, too. Here the company is taking particular care to the separation of sugar and sugar-like products. In the following weeks RHEWUM will deliver two screening machines type RHEWUM WA 150x269/3/V according to FDA standards (Food and Drug Administration) to China. The three-deckers will be used for separating sweeteners. Special features of the machines are the adjustable inclinations and the air drilling fluid circulations. Viewed over the long run, these unique designs of process-related components will guarantee efficient workflows. True to the RHEWUM-slogan — enjoy the difference. Zhejiang Huakang Pharmaceutical Co., Ltd.: Zhejiang Huakang Pharmaceutical Co., Ltd. is a worldwide leading functional polyols manufacturer, specializing in the production and selling of xylitol, maltitol, refined xylose

Visiting a trade fair is not always possible and if you do manage to visit, the time you can share is often very limited. RHEWUM would like to keep in touch with their customers to ensure that they are kept up to date with the latest processing technologies. To enable this, we will send an exhibition trailer to your site. The trailer has been designed to accommodate our latest WA(U) type machine and we will hold screening demonstration sessions with RHEWUM application experts. During the sessions we will show you how you can make a step change in profitability for your company by improving the efficiency of your production line and by reducing costs realized with the latest RHEWUM screening technologies. Contact persons for your points of region: Turkey: BM ENDÜSTRİ Üsküp

Using the newly developed flow sensor it is possible in harsh production environments, to measure th The FlowChecker combines low investment costs with a simple operation and quick readiness for use. Special attention was paid to the ease of operation and calibration of the system, so it can be independently carried out by the customer, without support of RHEWUM. The measuring system FlowChecker consists of a highly developed 3D TOF sensor, an industrial PC and analyzing software, which calculates the mass flow or volume flow of the determined data. Additionally, the output (volume or quantity) will be calculated and displayed. The result will be logged electronically. For embedding in existing systems, the FlowChecker is equipped with a network connection (TCP-IP) and an interface to OPC servers.

Screens and other vibrating machines are often integrated in production processes at a central point. Regarding this positioning any machine damage leads to production losses and therewith financial losses which is absolutely not acceptable. So the trouble-free operation of this machines is a must. At this point the RHEWUM ScreenGuard has it´s place! The RHEWUM ScreenGuard monitors the vibrating behaviour of vibrating machines continouusly in order to keep it from critical operation conditions. The acceleration is measured by sensors and compared with given values. The ScreenGuard shows the acceleration g, the speed in cm/s, the amplitude in mm and the frequency in Hz on a display. The system can be used as on-site-monitoring to just show the operation status. It can also be integrated in a superordinated system and then be used to give a signal at critical operation status and/or to stop the vibrating machine. The ScreenGuard has two independent channels,

BMA (Braunschweigische Maschinenbauanstalt AG) placed an order with RHEWUM for construction, manufacturing and delivery of 3 vibrating conveyors type RHEWUM RIU for the Nile Sugar Project. The sugar production named Nile Sugar Company located on the area of Nobaria will include a beet sugar refinery with a processing capacity of 8.000 t/d and a raw sugar refinery with a processing capacity of 1.200 t/d. The very special feature of this project are the dimensions of the throughs with two times 10.650 mm and once 9.000 resp. the overall length of the whole haulway of 30 m to be done by only three throughs. RHEWUM will realize these machines not in the conventional bar-driven way but driven by two out-of-balance motors. Doing it this way it is very important to achieve an extremely warp-resistant construction in order to get the needed consistent movement of the machine and to guarantee this even at changing loads during the discharge of the sugar centrifuges. Instead

In May 2008 RHEWUM received an order for screens for the MA´ADEN fully integrated phosphate fertilizer production operation in the Kingdom of Saudi Arabia which will be the world´s largest of this kind. In May 2008 RHEWUM received an order for Lump Screens for the MA´ADEN fully integrated phosphate fertilizer production operation in the Kingdom of Saudi Arabia which will be the world´s largest of this kind. The screens will be part of the 4.5 million t/a phosphate rock beneficiation plant at the Al-Jalamid phosphate complex in the north of the Kingdom of Saudi Arabia. The order has been placed by the EPC contractor Litwin Europe Middle East, a part of the Bateman Litwin N.V. Group. The order covers three screening machines Type WAU 195x269/1 and three feeders Type AV 1950, each screen for a capacity of 400 t/h – which means a capacity of nearly 10.000 tons per day! Delivery of the screens is foreseen for November and December 2008.

With effect from August 1st 2008 Mr. L. Fleischmann takes over sales activities of RHEWUM in France Of course Mr. Dominique Lallement will still be available for our customers as a contact person ensuring the continuity of the long-term customer relationship established by RHEWUM. Simultaneously this will secure the path into a reliable and successful future for both the customers and RHEWUM. After having studied process technology in Berlin Lutz Fleischmann worked for several well-known customers in the fields of mechanical process technology. In this relation he was not only involved in sales, planning and project management, but also in the commissioning of various large-scale projects. For family reasons Lutz Fleischmann then decided to move to France after having gained several years of work experience in Germany. In France he continued his work as a customer-oriented process engineer. Thanks to his long-term and successful work experience at the interface between customers and manufacturers Lutz Fleischmann is a qualified and competent contact person for

On 12th of February 2008 RHEWUM could receive the order for revamping the existing screening installation of Bagfas Fertilizer in Turkey. The order has been placed by the EPC Contractor UMDE Mühendislik in Istanbul which are engineering all modifications required. The capacity expected from the RHEWUM screens is more than 4000 tons per day of NPK and more 4000 tons per day of DAP fertilizer. Process design of both plants will be realized according to the process know-how of INCRO Spain which are the licenser of this prestigious project. Delivery of the screens is foreseen for the 1st of August 2008, the re-start shall take place in October 2008.

Modern screening tech reduces energy use, aligns with ESG goals, and boosts efficiency in production. SCREENING SMARTER: THINK BEYOND THE INITIAL PRICE TAG When evaluating screening machines, it’s essential to consider the long-term operating expenses not only the initial investment costs but. These include inevitable maintenance and the often significant, yet sometimes overlooked, energy consumption of the chosen machine type. Furthermore, in today’s and tomorrow’s business environment, a comprehensive evaluation must also encompass crucial sustainability metrics, such as environmental impact, social responsibility, and corporate governance (ESG) factors. These considerations are increasingly influencing purchasing decisions while impacting long-term profitability. Raising or at least fluctuating energy costs become a significant concern for businesses. While the initial decline in electricity prices following market liberalization has reversed, the focus has broadened beyond simply the price of electricity. The transition to renewable energy sources, while