Raymond Mill The Raymond Mill is used to grind materials in the fields of building materials, mining, metallurgy and chemical industry. The materials must be nonflammable and nonexplosive materials such as: limestone, calcite, barite, dolomite, potassium feldspar, marble, talcum, gypsum, kaoline, medical stone, rock phosphate, manganese ore, iron ore, chemical materials and so on(300 kinds ...