PERIPHERALLY DISCHARGEABLE WET MILL FOR MILLING ORE ON SELF-GRINDING PRINCIPLE Russian patent published in 1997 - IPC

FIELD: mining industry; beneficiation of economic minerals; gold extracting industry; pre-treatment of any ores for beneficiation. SUBSTANCE: proposed mill comprises drum shell made in form of horizontally arranged truncated cone, generatrix of which forms inclination angle up to 6 deg. in relation to horizon. Shell further comprises grate-protected ports equidistantly spaced all over side surface of shell near truncated cone base, and axial- end cover made conical with conicity angle 150-170 deg. Mill is charged through axial-end cover. For this purpose, latter is provided with charging pipe having inner diameter equal to (0.3-0.4) D of mill diameter, and with hollow trunnion resting on 6-8 supporting rollers used as bearings. Finally, mill shell comprises another axial-end cover arranged at discharging end and made conical with conicity angle 160-180 deg. This discharging-end cover is provided with inner, central deflecting ring and blind cantilevered trunnion resting on 6-8 supporting rollers acting as bearings. Proposed peripherally dischargeable wet mill offers number of advantages, viz.: fuller disintegration of clay, more effective breaking of rock, greater selectivity of grinding, increased discharge rate of milled product, reduced slime formation, greater adaptability to mass production during mass-scale fabrication. EFFECT: increased yield; lower electric energy consumption; savings on metal during manufacture. 3 cl, 7 dwg, 3 tbl