(under subclass 12.1) Apparatus and methods which involve both sifting and magnetic separation to segregate components of a mixture.
(1) Note. The separations may be sequential, to separate some components according to size and others according to magnetic permeability, or they may be simultaneous, as where one separation is made to promote or control the other, for instance, where there is a sifting separation to obtain one or more sized grades to be subjected to magnetic separation appropriate to each size grade.
SEE OR SEARCH THIS CLASS, SUBCLASS:
8, for magnetic separation with a prior treatment to develop, neutralize or destroy the magnetic property of at least one component.
