The classifier is widely used in the concentrator with the ball mill into a closed cycle separation of ore sand, or used in the gravity concentrator to grade ore sand and fine mud, and metal beneficiation process to grade the size of the pulp, and washing operations in the desilting, dehydration and other operations. The machine has the characteristics of simple structure, reliable operation and convenient operation.

The purpose and scope of use of the machine: by means of the principle that the size of solid particles is different, the specific gravity is different, and therefore the settling speed in the liquid is different, the fine ore particles are floating in the water into an overflow and out, and the coarse ore particles are sinking at the bottom of the tank. A grading device that is pushed upward by a screw and discharged to perform mechanical grading. This machine is widely used in the concentrator and ball mill to match the closed-circuit circulation process to divide the ore sand, or used in the gravity concentrator to grade the ore sand and fine mud, and for the ore dewatering feed.