Pulp via to mineral equipartition board to belt groove surface, along the inclined plane. Belt at 1.8 m/min of low speed reverse flow movement. Particles in the flow of the slope under the action of force, gravity and the friction, according to the proportion of the loose layer, and along the belt to move at different speeds. The upper light particles move faster, with the pulp flow into the tailings groove to the rear; Heavy particles move slowly, lower deposition on the belt, the belt running to the top, with the help of concentrate on the concentrate end brush and rinse water, it into the concentration tank. On the belt, ore roll and also by the equipartition plate to the uniform flow of water to rinse, can complement separation effect.