DRY GRINDING TUBE BALL MILL Russian patent published in 2021 - IPC B02C17/06 

FIELD: materials grinding equipment.

SUBSTANCE: invention relates to equipment for grinding materials. Proposed is a dry-grinding ball mill containing loading and unloading bottoms with hollow trunnions, inside which loading and unloading bushings are installed coaxially and rigidly relative to them, a drum rigidly and coaxially connected to the loading and unloading bottoms. On the side of the lined drum, on the inner surface of the loading sleeve, polyhedral pouring blades, evenly distributed in its cross-section, are rigidly fixed, the working edges of which, pouring the material in the loading sleeve, are parallel to the longitudinal axis of the loading sleeve and form convex polyhedral surfaces from the side of the material transported by them. The first working face of the multifaceted surface, adjacent to the inner surface of the loading sleeve, at each transfer blade, from the side of the longitudinal axis of the loading sleeve, forms an acute angle with the radial plane passing through the longitudinal axis of the loading sleeve and the line of intersection of its inner surface with the first face.

EFFECT: device provides high efficiency during use.

1 cl, 3 dwg