Froth Flotation (Sulphide & Oxide)

Froth Flotation (Sulphide & Oxide)

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Flotation process of Zinc sulfide ore vs. Zinc sulfate impurity in reagent (1 reply and 1 comment)

1 year ago
phanindra 1 year ago

Copper sulfate is one of the reagents in Zinc flotation. 

Zinc sulfate is present as an impurity in Copper sulfate solution. 

Does this impurity have any negative effect on zinc recovery?

1 year ago
Jorge 1 year ago

There is not a negative effect because the zinc sulphate content is very small. You should keep in mind that many Cu-Zn and Pb-Zn operations are used to add ZnSO4, NaCN and/or SMBS in the primary grinding stage and flotation circuit as the depressors for pyrite and sphalerite. The tailings from the Cu-Zn and Pb-Zn operations content residual reagents and there is not a negative effect in the zinc circuit. Obviously, it is important to add the correct dosage of CuSO4 and collector.

1 year ago

I dont think that small amount of Zinc sulfate can impact, Copper sulfate active Zinc sulphide flotation (if there is pyrhotite can be actived by CuSO4 then flotation of zinc will be less). 

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