The purpose of YGM Mineral Mill is to grind materials in the fields of building materials, mining, metallurgies and chemical industry. The materials should be non-flammable and non-explosive. Examples of the materials are: Quartz, feldspar, barite, fluorite, dolomite, garnet, carborundum, bauxite, zircon, marble, calcite, iron ore, rock phosphate, slag, ceram, gold mine and coal slack and so on(400 kinds of materials). The materials should have the hardness less than 9.3 in Moh's scale and humidity less than 6 percent. The granularity of the end products can be changed from 30 to 425 meshes (the minimum is 1000meshes).

High-pressure Suspension Mineral Mill's working principle is similar to that of Raymond grinder mill, but its grinding unit is furnished with 1000 - 1500 kg pressure spring. When it works, the grinding roller, under the action of high pressure spring and centrifugal force, rolls and closes up to grinding ring, its rolling pressure ratio is 1.2 times of that of Raymond flour mill given an identical condition, but its output may increase 20% to 30%.