METHOD OF EXTRACTING DIAMONDS FROM DIAMOND-CONTAINING RAW MATERIAL Russian patent published in 1997 - IPC

FIELD: mining industry. SUBSTANCE: this can be most successfully used in extracting diamonds from diamond-bearing pipes. Method implies disintegration of primary raw material, classification of disintegrated primary raw material according to size classes, initial benefication of classified raw material, disintegration of resulted products, and subsequent treatment. All operations are performed with dry raw material at subzero or above-zero temperatures which prevent formation of condensate and dampening of raw material. Disintegration of resulted products is effected by means of self-grinding planetary mills and/or roll mills. EFFECT: high efficiency. 3 dwg