... dolomite, potassium feldspar, marble, talcum, gypsum, kaoline, medical stone, rock phosphate, manganese ore, iron ore, glass, ceram, active carbon, carbon black ... Working PrincipleAfter the materials enter the grinding room of the main equipment, the grinding roller swings outward and presses ... and the rough powder will be back to the grinding room for regrinding. The qualified powder is brought into ...