It is one of the main gravitational segregation equipment in the enrichment plant, widely applies in the classification tungsten, the tin, the tantalum niobium and other rare metals and the noble metal ore. Also available in classification iron, manganese ore and coal. When ore and so on processing tungsten, tin, the table effective recycling granularity scope is 2-0.22 millimeters. The table dressing process carries on the complex inclined bed surface , and the ore grains are sent in from the bed surface for the ore trough, simultaneously it supplies crosswise wash for the water trough, thus the ore grains laminate surface and according to the proportion and granularity, and make the longitudinal motion and transversal motion along the bed surface, in function of the gravity, the crosswise running water momentum, and the inertia and friction force from the reciprocation symmetry movement of bed surface. Therefore, the proportion and the granularity different ore grain assumes gradually along respective heading by a on the one hand to b on the other hand fan-shaped flows off, separately discharges from the ore concentrate end and the debris side different area, finally is divided into the ore concentrate, the middling and the debris.
