Wear-protected rotary valves and diverter valves for the mineral industry

Innovative wear protection concepts now permit the use of rotary valves in systems for the bulk handling of heavily abrasive materials. At Powtech 2010 the German company Coperion GmbH presented its range of products for these special applications. Wear-protected rotary valves (Fig.) and diverter valves are distinguished by their outstanding reliability of operation, long service life and hence minimal repair and maintenance requirements. Consequently, these products are ideal for use in the mineral industry. In the cement industry, for example, one of the essential advantages of Coperion’s rotary valves in comparison to the more conventional screw pumps lies in the considerable saving in energy. Power requirements – and hence energy costs – are reduced by more than 90 % compared to systems equipped with screw pumps. Added to this is the fact that wear-protected rotary valves provide a longer operating life by up to 50 %. A further decisive advantage is the negligible time – and hence cost – of converting a system for use with rotary valves.  Either no or only very negligible changes have to be made to the layouts of the piping system and the compressed air supply lines. As rotary valves are relatively small in comparison to conventional systems, there are no space requirement problems to contend with. Rounding off the product range are ATEX-certified versions (against explosion transfer) and high-temperature versions for the safe and reliable handling of hot materials up to 500 °C.

Coperion GmbH, Weingarten (D),

Tel.: +49 751 408-0, www.coperion.com