In a sad twist you inherit “only” a copper mine while your siblings inherit gold and diamond mines. On inspection you come to know that your copper mine is fully equipped to extract the metal from the ore and also that it consists only of Chalcopyrite. Finely powdered, pulverized ore is ready to be processed. What would be your next step ?

Concentration using froth floatation

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Smelting

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Refining

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Roasting

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Solution

The correct option is A
Concentration using froth floatation

Once powdered ore is available, the next step is to increase the concentration of the metal (to be extracted) by means of – yes - concentration. Since $C u F e S_{2}$ (chalcopyrite) is a sulphide ore we should subject the ore to froth floatation

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In the extraction of copper from your mine, we are now in the roasting phase. Broadly, what will be the components of the product that you get out of the reverberatory furnace?

In the extraction of copper from mine, we are now in the roasting phase. Broadly, what will be the components of the product you get for the ore $C u F e S_{2}$ from the reverberatory furnace?

Q. Although there are several ores, 80% of the world copper production comes from the ore chalcopyrite (

C u F e S_{2}

). The extraction of copper from chalcopyrite involves partial roasting, removal of iron and self-reduction. In the self-reduction step, the reducing species is:

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The correct option is A Concentration using froth floatation Once powdered ore is available, the next step is to increase the concentration of the metal (to be extracted) by means of – yes - concentration. Since CuFeS2 (chalcopyrite) is a sulphide ore we should subject the ore to froth floatation