what is the role of depressant in froth floatation process?
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In the froth floatation process the role of the depressants is to separate two sulphide ores by selectively preventing one ore from forming froth
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Hey !!
In froth floatation process, the role of the depressant is to prevent certain types of particles from forming the froath with the air bubbles. Example :- NaCN is used as a depressant to separate lead sulphide ore one (PbS) from zinc sulphide ore (ZnS). NaCN forms a zinc complex Na₂[Zn(CN)₄] on the surface of ZnS thereby preventing it from the formation of froth.
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