GRINDING MILL LINER Russian patent published in 2003 - IPC

FIELD: mechanical engineering. SUBSTANCE: liner has plastic base made in the form of successively arranged longitudinal ribs with inserts of abrasion-resistant materials. Ribs are formed as separate members with shaped working surface and are arranged in plastic base so that any straight line extending at an angle of 90-45 deg with respect to liner longitudinal axis intersects working surfaces of inserts at cuts having total length of at least 0.1 the width of longitudinal rib. Total working surface of inserts is at least 20% the area of rib section normal to radius of mill drum. Separate members of inserts may be arranged at different levels, are made in the form of units containing several members, and may be T-shaped. Liner ribs may be made shaped. EFFECT: increased efficiency and prolonged service life of liners. 5 cl, 8 dwg