The potential control technology in the application of selective regrinding of flotation middlings to improve the chalcopyrite sorting index

Author(s): Qin Lei, Peng Huiqing

With the selective regrinding of flotation middlings,the pulp potential tends to vary. The potential of the pulp after regrinding was adjusted by adding the potential adjusting reagents in order to improve chalcopyrite flotation index. Potential changes in pulp were measured before and after regrindin, then study the relationship between pulp potential and flotation index, and carry on Closed-circuit test for primary process and the selective regrinding of flotation closed-circuit test point Regulation Technique test to Mine samples collected from Wushan Copper, It was found that new processes improve the final concentrate grade of 1.39% compared with the original process, and ultimately improve the recovery rate of 0.65% after adopt new technology.

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