Coarse powder mill is mainly used to mix fineness of the finished product which is less than 3 mm .It can be applied on the highway, refractories, building materials, brick, chemical industry, water conservancy, hydropower and other industries, and is an ideal mix of materials processing equipment.There are two main methods about how coarse powder mill work.

Dry production : 

 the material is loaded into the hopper, through the feed valve falls on riving cones ,then disperses along the 360-degree to the ring surface of grinding evenly, followed by several grinding roller’s impact, rub, grind into powder and small particles, and finally discharged by the vibrating screen.

Wet production: crushing process is substantially the same with the dry method . It use different influent manner ,and the the separation way of the pulverized material with water is dissimilar also. these can design as the requirements of users.