11-metre-long quadruple multiscrew feeder

Ajax was formed in 1970 to specialise in the design and manufacture of equipment to handle and process bulk solids. Our factory extends over 3000 sq. m and incorporates extensive fabrication facilities for mild and stainless steel, aluminium and hi nickel alloys. The design office uses 2D and 3D technology to enhance the design process and the technical services we provide include powder flow property testing and practical feed and processing trials. We use our understanding of flow behaviour allied with an innovative approach to generate equipment designs which are well considered for the individual application. The work that is undertaken by Ajax is distinguished by specifying designs that best meet the client’s requirements and is often bespoke rather than standard ’off the shelf’ forms of equipment. Our works is about a mile from the town centre and 12 miles North West of Manchester. Bolton itself has become strategically placed within the motorway network, having access to the M60, M61 and M62 within several miles thus offering quick and easy access from all parts of the North of England and, via the M6 and M1, the rest of the country.

Screw feeders can not only dose, but also store additional capacity, save headroom and improve flow performance. Screw feeders are widely used to control the rate of discharge from bulk storage hoppers, but they also enable extra capacity to be stored, headroom saved and flow performance improved. When designed as an integral part of the storage system they rectify segregation occurred during the filling of the hopper and provide optimum conditions to counter any tendency for the contents to ‘flush’ during discharge. However, to secure maximum operating benefits the extraction pattern per unit length of the feeder should match the cross sectional area of the hopper that it serves. As the feeder is usually shorter than the hopper dimension, the extraction rate demand at the start and end of the feeder opening can vary to many times that of the intermediate sections. A common technique employed to generate progressive extraction along the length of the outlet slot is to increase the screw pitch. Apart from the fact that the initial section of screw exposed to the hopper

An explanation of terms relating to particle technology as an introductory tool for non-specialists, newcomers and students in the field. Bulk solids play a vital role in human society, permeating almost all industrial activities and dominating many. Bulk technology embraces many disciplines, yet does not fall within the domain of a specific professional activity such as mechanical or chemical engineering. The British Materials Handling Board perceived the need for a Glossary of Terms in Particle Technology as an introductory tool for non-specialists, newcomers and students in this subject. The glossary was prepared by Lyn Bates for The British Materials Handling Board (BMHB). It contains an Introduction, with 3 paragraphs: Bulk solids in industry; Rand Reports on the performance of plants that handle bulk solids; and General terms. Sections of terms Then term in the glossary are grouped in the following sections: Types of Powder, Powder Properties, Powder Processing, Particle Properties, Particle Size, Particle Shape, Pore Size and Shape, Particle Surface Area, Particle Test Methods (of Image

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