Eddy-current separation of small nonferrous particles by a single-disk separator with permanent magnets

This paper describes a new type of eddy-current separator. It separates electrotechnical wastes containing metallic particles with dimensions less than 5 mm. The separator, a so-called single-disk eddy-current separator (SDECS), consists of an inclined horizontal rotary disk covered with permanent magnets, alternately N-S and S-N oriented, directly fixed on the axis of an electric engine. The advantage is that it contains fewer permanent magnets and has a less complicated construction than the usual eddycurrent separators. The functioning of the SDECS is based on the jump effect of the strongly conducting particles inside the separation device. Experimentally, the separation of two wastes, namely, Cu-Pb and Cu-Al mixtures, was realized. The paper describes the dependence of grade and recovery on the drum revolution for three fixed inclinations of the disk for each component of the wastes.