What is the role of depressant in froth floatation process?
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In case of the froth floatation process, the depressants help to separate 2 sulphide ores by the selective prevention process of the froth formation by 1 ore and allowing another to enter into froth.
Example, to separate the two sulphide ores PbS and ZnS, NaCN can be used as the depressant.
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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.
Hope it helps you !!
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