Froth flotation process used for the concentration of sulphide ore

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Is based on the difference in wettability of different minerals

Uses sodium ethyl xanthate, C2H5OCS2Na, as collector

Uses NaCN as depressant in the mixture of ZnS and PbS when ZnS forms soluble complex and PbS forms froth

Uses pine oil as frothing agent

answer is A.

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Detailed Solution

The main reason is the froth uses the principle of separation and separates its sulphide ores from the other impurities.

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