The High-pressure Suspension Millis used to grind materials in the fields of construction, mining,metallurgy and chemical industry. The materials should be non-flammableand non-explosive. Examples of the materials are: quartz, feldspar,barite, fluorite, dolomite, garnet, carborundum, bauxite, zircon,marble, calcite, iron ore, rock phosphate, coal, ceram, slag and so on(400 kinds of materials). The materials should have the hardness lessthan 9.3 in Moh's scale and humidity less than 6 percent. Thegranularity of the end products can be changed from 30 to 425 meshes.