What is the role of depressant in froth ...

What is the role of depressant in froth floatation?

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By using depressants in froth floatation process , it is possible to separate a mixture of two suplhide ores.
Eg : In the ore containing ZnS and PbS , the depressant used is NaCN . It prevents ZnS from coming to the froth but allows PbS to come with the froth.

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Knowledge Check

Froth flotation

A

is a physical method of separating mineral from the gangue

B

is a method to concentrate the ore depending on the difference in wetability of gange and there

C

is used for the sulphide ores

D

is a method in which impurities sink to the bottom

Which of the following is used as depressant in froth floatation process.

A

Amyl xanthate

B

pine oil

C

`CuSO_(4)`

D

KCN

What are the froth stabilizers in forth floatation process

A

Aniline

B

Pine oil

C

Cresol

D

Xanthate

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