Shibang Medium Speed Trapezium Mill can grind these materials which are 9 or less on the Meshes scale, and moisture is below 6%., and they should be non-explosive and non-flammable mining materials. The final size can be adjusted from 30 to 400 meshes easily. These grinding mill is mainly used for grinding mineral products in metallurgical industry, construction field, chemical industry, mine, coal industry and etc. And it is the equal to the Equipments for desulphurization, and always the best choice of our customers. Large materials or stone are crushed by Jaw crusher to the needed sizes firstly, then the materials are elevated to storage hopper by bucket elevator, third, the materials are fed into the grinding chamber for grinding by vibrating feeder equably and continuously. The powder after grinding goes upwards together with the airflow, after seperating by powder seperator, those which can meet the fineness requirement enters into the cyclone powder collector through pipe together with the airflow, and then discharged from the discharge valve as final materials. Our Trapezium Mill has reached the advanced international level of powder making equipment manufacturing.