FIELD: nonferrous metallurgy; applicable in utilization of wastes of electrolytic refining of aluminium in form of electrolyte crust. SUBSTANCE: breakage of crust under conditions of self-grinding and periodic compression of material particles in crushers of mashing action, duration and grade of grinding of salt fraction are regulated by variation of speed of material unloading through discharge opening of crusher with the help of locking device. Size of discharge opening equals maximum size of metal particles in initial material - crust. EFFECT: higher degree of metal recovery, its quality and reduced power consumption in crust processing. 2 cl, 1 tbl
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