GRINDING MEMBER FOR DRUM MILL Russian patent published in 2007 - IPC B02C17/20 

FIELD: grinding engineering.

SUBSTANCE: grinding member comprises convex body of constant width provided with rounded ribs. The body is formed by the intersection of four spheres of the same diameter whose centers lie at the tops of a tetrahedron. The radii of the spheres are equal to the length of the tetrahedron edges. Three edges are rounded. The other three edges and all four tops are not rounded. According to the first version, three edges emanating from a single top are rounded. According to the second version, three ribs bounded one of the tetrahedron sides are rounded.

EFFECT: enhanced efficiency.

2 cl, 8 dwg