Selective rolls crusher

Details Selective rolls crusher Selective rolls crusher

B - Operations, Transporting

02

C

241/81

B02C 17/07 (2006.01) B02C 17/10 (2006.01)

Patent

CA 1214443

A B S T R A C T A process and apparatus for selectively crushing the softer portions of a conglomerate rock so as to beneficiate the softer portions thereof while leaving the substantially barren harder portions substantially untouched is described. The rock to be treated is fed to a horizontal rotating drum containing a single cylindri- cal rod rotatable longitudinally therewith. The size of the rod is selected to provide a crushing force between 10 and 100 g/cm2, depending on the actual material to be crushed. In a preferred embodiment one or two substantially concentric cylindrical tubes are loosely spaced inter- mediate the drum and the rod and rotated relative thereto so as to provide additional crushing surfaces.

449913

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