CONICAL INERTIA GRINDER Russian patent published in 2003 - IPC

FIELD: mineral fine grinding equipment. SUBSTANCE: conical inertia grinder has casing with outer cone and spherical support for inner cone equipped with shaft having drive unbalancing vibrator, and with grinding cavity defined by cone working surfaces faced to one another. Working surface of inner cone in grinding cavity is formed of three surfaces joined to one another. Generatrix of lower surface is extending through center of spherical support of inner cone to define acute angle with working surface of outer cone, with apex of said angle being positioned in discharge zone of joined cone jackets. Generatrix of mid portion of inner cone jacket surface is inclined at an angle of 50 deg to vertical plane, and generatrix of upper part of jacket surface is inclined at an angle of 15 deg, with angles between mated generatrices of jacket working surfaces of inner and outer cones not exceeding 18 deg throughout the entire grinding cavity. EFFECT: increased efficiency of grinder and provision for increased yield of cubical parts of crushed minerals. 1 dwg