How do we separate two sulphide ores by froth floatation method?

Question

How do we separate two sulphide ores by froth floatation method? (A) By using excess of pine oil (B) By adjusting proportion of oil to water or using depressant (C) By using collectors and froth stabilisers like xanthates (D) By using some solvent in which one of the sulphides is soluble

Tardigrade Admin · Accepted Answer

Two sulphide ores can be seperated by adjusting the proportion of oil and water or by using depressants, e.g., if an ore contains ZnS and PbS both, a depressant NaCN is added duringfroth floatation. It forms a complex with ZnS and prevents it from coming into froth.

Q. How do we separate two sulphide ores by froth floatation method?

By using excess of pine oil

By adjusting proportion of oil to water or using depressant

By using collectors and froth stabilisers like xanthates

By using some solvent in which one of the sulphides is soluble

Two sulphide ores can be seperated by adjusting the proportion of oil and water or by using depressants, e.g., if an ore contains ZnS and PbS both, a depressant NaCN is added duringfroth floatation. It forms a complex with ZnS and prevents it from coming into froth.