... brittle materials with Mohs’s hardness under six, such as calcite, chalk, limestone, dolomite, kaolin, bentonite, talc, mica, ... storage hopper, and vibrating feeder.Working principle of ore grinder:After crushed by hammer crusher, the large ... pollution and noise.Model and technical data of ore grinder:ModelHGM8021HGM9024HGM10027HGM10036Ring Diameter(mm)80090010001000Ring Number/pcs3334Roller Number ...