How to prevent and reduce the excessive amount of slime in the grinding ore?

1) Reduce and prevent the formation of slime: use a multi-stage grinding process and a stage beneficiation process. To properly select grinding and grading equipment to improve the efficiency of the classifier;

2) Adding agents to eliminate the harmful effects of slime: commonly used water glass, soda, caustic soda, etc., can reduce the flocculation and cover function of the slime. In order to alleviate the harmful effects of a large amount of adsorbent on the slime, a segmented dosing method may be considered;

3) Desliming the ground ore before flotation, and discarding it as tailings. If the content of useful components in the slime is high, the removed slime can also be floated separately or sent to the water treatment.

Commonly used desliming methods: 1) descaling by classifier; 2) dewatering by hydrocyclone; 3) in special cases, a small amount of foaming agent can be added before flotation, and the easy-floating slime is floated out by flotation.

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