GRINDING ROLL FOR POWDERING GRANULAR MATERIALS Russian patent published in 2009 - IPC B02C4/30 

FIELD: mechanics.

SUBSTANCE: invention relates to a grinding roll for pressure-powdering of granular materials, in particular, to grinding rolls incorporated with roller presses. The proposed roll has a sleeve furnished with wear-resistant surface lining intended for autogenous protection of the surface and lining of end face surfaces on the roll outer edge. The end face surface lining consists of multiple pre-fabricated circumferential solid elements that form the roll end face edge. The said solid elements are arranged in the roll sleeve circular outer edge. Note here that they rest, both axially and radially, upon the said roll sleeve circular outer edge and feature a detachable joint with the roll sleeve.

EFFECT: longer life, ease of manufacture and repair.

6 cl, 5 dwg