Which of the following method used for the concentration of copper pyrites?

Magnetic seperation

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Gravity seperation

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Froth Floatation process

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Solution

The correct option is D Froth Floatation process
This method is used when a higher ore contains impurities with higher density. This method is used for the concentration of Sulphide ores. (Eg: Copper pyrites, iron pyrites, Galena, Zinc blende etc.) Copper is mainly extracted from copper pyrites. After the concentration of its ore by froth flotation process, the ore is roasted in a current of air to remove arsenic, antimony and much of sulphur.

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