MATERIAL CRUSHING UNIT Russian patent published in 2015 - IPC B02C7/08 

FIELD: technological processes.

SUBSTANCE: solid material crushing unit is intended for the crushing, grinding and classification of metal-containing ores, cement clinkers, etc. in the mining-metallurgical, construction and chemical industries. The unit includes a housing (7) with loading (1) and unloading (2) devices, upper (2) and lower (3) grinding rotors with radial connection strips (19) for the capture of the crushed material, a drive (15) and a device (12) for variation of a gap value between the rotors. The rotors in the form of detachable working (10) and drive (11) discs are located one above another with a circular gap. The upper rotor has the central loading hole (16). The rotors are installed with a possibility of being rotated relative to a vertical axis (13) in directions opposite relative to each other. Working surfaces (17) of the grinding rotors are of a convex type and form a uniform constriction of the gap from the centre to the periphery. The rotors are provided along the periphery with annular inserts (18) from a wear-resistant material, mainly of a metal-ceramic or ceramic composition.

EFFECT: invention improves the quality of the obtained materials.

8 cl, 5 dwg