the national ipr product─straight centrifugal grinder mill is our latest type which is designed by our experts who have long experience and hard research in mill equipment, which has opened a new time of industrial flour mill with high efficiency and low energy consumption. straight centrifugal grinder is used to grind various non-inflammable and non-explosive stuff in mining, building, chemical, metallurgical industry, etc. straight centrifugal grinder can grind high, medial and low hardness material whose moth's hardness is below 9.5,such as silica carbide, zirconium, quartz stone, granite, barite, marble, limestone, soap stone, calcium sulphate stone, slag, ceramic prismatic, glass, etc. the working principle of straight centrifugal grinder : the motor drives the rollers suspension frame through flywheel and shaft, and the rollers will rotate around the ring with the rollers suspension frame. deduster will eliminate the dust, at the same tiem, it will also carry away the heat. dry production: the stuff enters the input opening, after distributed by distribute cone, it falls down the ring like the waterfall. it will be grinded to powder by the rollers in turn, discharged from the discharge pipe. wet production the process assembles the dry production; the difference lies in adding water and the dehydration after grinding. this process can be designed according the user's requirements.