Raymond mill is a new type of mill that replaces the ball mill for processing ore powder. The roller of Raymond mill is tightly pressed on the grinding ring under the action of centrifugal force, so when the roller and the grinding ring wear to a certain thickness, the output and fineness of the finished product are not affected. Raymond mill roller, grinding ring replacement cycle is long, thereby eliminating the centrifugal mill wearing parts replacement cycle is short. The mill is suitable for barite, calcite, potassium feldspar, talc, marble, limestone, ceramics, glass and other Mohs hardness is not greater than 7, humidity below 6% of non-flammable and explosive mining, chemical, building materials, metallurgy and other industries of more than 280 kinds of materials milling processing, the finished product particle size in the range of 80-325 mesh adjustment.