The screw classifier is one of the equipment for beneficiation. The screw classifier is a kind of equipment for mechanical classification based on the principle that the specific gravity of solid particles is different, so the speed of precipitation in the liquid is different. It can be combined with a ball mill in a concentrator to form a closed-circuit cycle splitting ore sand, or used in a gravity concentrator to classify ore and fine mud.

The screw classifier is based on the principle that the solid particles are different in size and specific gravity, so the settling speed in the liquid is different. The fine ore particles float in the water and overflow, and the coarse ore particles sink to the bottom of the tank and are pushed upward by the screw. To perform mechanical classification.

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