What is the role of depressant (NaCN) in Froth-Flotation method? – InterviewSolution

1.	What is the role of depressant (NaCN) in Froth-Flotation method?
Answer» SOLUTION :It separates TWO sulphate ores/ALLOWS PbS to COME with the forth/selectively prevents ZnS from COMING to the forth but allows PbS to come with the forth.

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