... sepiolite, attapulgite, rectorite, diatomite, barite, gypsum, alunite, graphite, fluorite, rock phosphate, kalium ore, pumice, etc., ... storage hopper, and vibrating feeder. Features of petroleum coke powder grinding mill :1.High efficiencyUnder the same ... and noise.Model and technical data of petroleum coke powder grinding mill :ModelHGM8021HGM9024HGM10027HGM10036Ring Diameter(mm)80090010001000Ring ...