Experience, let's briefly talk about how to deal with the problem of too much sludge in the slurry in the operation of the limestone grinding plant. 

Add chemicals to eliminate the harmful effects of the sludge: commonly used water glass, soda, caustic soda, etc., can reduce the flocculation cover effect of the sludge. In order to reduce the harmful effects of a large amount of adsorbents in the sludge, it can be considered to adopt the method of adding chemicals in stages; 

Deslime the ground ore before flotation and discard it as tailings. If the content of useful components in the sludge is high, the removed sludge can also be treated by flotation alone or by water treatment. 

Commonly used desliming methods and equipment mainly include: 1. Desliming by classifier; 2. Desliming by hydrocyclone; flotation