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When processing bulk solids, agglomerates can occur that impair the production process. How can they be separated or dissolved as efficiently as possible? Among other alternatives, agglomerates can either be separated with sieving technology or dissolved with the help of passing sieves. This depends mainly on how solid the agglomerates are or how difficult it is to separate the adhering product particles from each other. Passing screens are used when the product to be processed tends to compact. This interferes with further processing in downstream production stages and has a quality-reducing effect. These screening machine, such as the JEL PS passing screen, use a rotor with passing bars to pick up the lumpy product and pass it through the screen mesh. The product falls out below the screen in the desired degree of fragmentation and can be conveyed to the following processing stage. Features of the JEL PS passing sieve machine: Individual fine adjustment In order to be even more flexible when screening and crushing agglomerated bulk solids, the rotating passing bars are adjustable. The distance between the

In the recycling process of PET bottles, a GKM vibration screening machine is used to clean the washing water of the PET flakes. A GKM tumbler screening machine is used for fractionating and dedusting the finished PET flakes. Raw materials from recycling The recycling of materials is becoming increasingly important due to the scarcity of raw materials and for the sake of environmental protection. This also includes recycling of PET. In recycling, waste products reintroduced a new production cycle, respectively, base materials become secondary raw materials. The materials produced in this way are referred to as recyclate or regenerate materials (source: Wikipedia). From 2025 on, non-refillable PET beverage bottles in the EU member states (regulation (EU) 2019/904) must contain at least 25% recycled plastic, so-called recyclate. Recycling of PET bottles In the recycling process of used for PET bottles, depending on the procedure, the labels and caps are sometimes removed in advance after that the bottles are sorted by color and then shredded. The next step is usually the washing of the crushed mass, afterwards dried and freed from final impurities. For this recycling process of PET bottles,