Our main products are crusher machines for processing over 160 kinds of stones and ores in mining, quarry, construction, road and other industries. . Coal mill is a kind of ball mill, which is often used to crush and grind coal bricks into powder, so it is also called coal grinding mill. . Stone crushing plant is also called rock crushing .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 non-flammable and non-explosive 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 .