While your siblings are eagerly anticipating their first batches of Gold and diamond, you are still yet to get a single gram of copper! Armed with the know-how of extracting copper, you smelt the calcine from the roasting process in a blast furnace. What is the smelt composed of?

Pure Cu metal

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Crude Cu metal

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$C u_{2} S$ and FeS

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Matte Copper

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Solution

The correct option is D
Matte Copper

The roasted ore is mixed with Silica and powdered coke (to deter the oxidation of FeO to $F e_{2} O_{3}$ so that FeO could be removed as $F e S i O_{3}$ )

FeO + $S i O_{2}$ $\to$ $F e S i O_{3}$

The temperature is high enough to melt the slag. Below the layer of slag is molten mass known as Copper Matte. It consists of $C u_{2} S$ and FeS

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Similar questions

While your siblings are eagerly anticipating their first batches of Gold and diamond, you are still yet to get a single gram of copper! Armed with the know-how of extracting copper, you smelt the calcine from the roasting process in a blast furnace. What is the smelt composed of?

Q. Copper is extracted from copper pyrites. After roasting, the ore is mixed with silica and coke and then smelted in a blast furnace. The matte obtained from the blast furnace is charged into a silica lined converter. Some silica is also added and a hot air blast is thrown into the mixture to obtain blister copper which is purified by electrorefining.

During roasting, copper pyrites are ultimately converted into a mixture of:

Q. Copper is extracted from the ore copper pyrite by smelting in a blast furnace. The flux used and the slag formed are :

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 ?

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