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Which of the following are collectors used in the froth floatation process?

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in Chemistry – Class 12 by (188k points)
Which of the following are collectors used in the froth floatation process?

(a) Aniline

(b) Pine oil

(c) Ethyl xanthate

(d) Potassium ethyl xanthates

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Question is taken from Concentration of Ores topic in section General Principles and Processes of Isolation of Elements of Chemistry – Class 12

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The correct choice is (a) Aniline

The explanation is: Froth floatation is generally used for sulphide ores. It is based on the fact that sulphide ores are preferentially wetted by oils while that of the gangue is wetted by water. To a suspension of the crushed ore in water, collectors are added to enhance the non-wettability of the ore particles. Pine oil, ethyl xanthate and potassium ethyl xanthates are examples of collectors.

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