DEVICE FOR PRIMARY PROCESSING OF CLAY STOCK Russian patent published in 2015 - IPC B28C1/20 

FIELD: mining.

SUBSTANCE: claimed device comprises two parallel shafts running in opposition and provided with discs and disc cleaners. Said shafts are configured to allow a partial entry of discs of one shaft into the space between discs of the other shaft. Discs have at least one trailing edge to make the working section on the disc lateral surface with zero curvature or that approximating thereto. Discs are fitted on the shafts with angular shift to make the discs working section form a helical surface. Disc cleaner is composed of flat combs coupled with crosswise bars supporting shaft bearings to make a closed frame. This device is provided with two guide units of crosswise plates.

EFFECT: efficient withdrawal of stones and foreign inclusions and removal of stuck material.

5 cl, 7 dwg