The generator drives the quill shaft through the belt, which having endotheca under the condition of high-speed rotation; then slurry flows into endotheca through feeding pipe, which is intensified under the action of centrifugal force; at the moment, the heavy minerals remain in the endotheca, and the light minerals are discharged through tailings chute; at last, after a period of team work, the first generator is stopped, all the heavy minerals are discharged from the fine mineral mouth, the whole processing finished.