... to small and medium-sized mining, chemicals, building materials, metallurgy, refractory materials, pharmaceuticals, cement and other industries. Raymond Mill of ... carbon, bentonite, kaolin, cement, phosphate rock, gypsum, glass, insulation materials, etc that Mohs hardness of not more than 7 and ... high-pressure spring under 800 - 1200kg; 2. The materials that Mohs hardness of less than 9.3 mineral can ...