Host motor through a speed reducer drives the spindle and the turntable, turntable driven by the column pin dozens of ring roll in the ring rolling and rotating raceway. Bulk material by hammer crusher broken into small particles by the hoist into a storage bin, electromagnetic vibrating feeder will even materials to middle upper turntable, material under the centrifugal force scattered to the circumference, and fall into the mill race was ring roller stamping, rolling, polishing and grinding ring, the first layer of crushed material in the second layer and the three layer, suction high-pressure centrifugal fan external air suction machine, and after the meal third layers of crushed into powder selecting machine. The turbine rotating powder machine in the coarse particles fall heavy grinding, fine powder with airflow into the cyclone powder collector and the lower part of the discharge valve discharge is finished, the air flow with a small amount of fine dust through the pulse dust collector after purification by the blower and exhaust muffler