While your siblings are eagerly anticipating their first batches of Gold and d

Discussion Forum : General Principles And Process Of Isolation Of Elements

Question -

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?

Options:

A . Pure Cu metal

B . Crude Cu metal

C .

C u_{2} S

and FeS

D . Matte Copper

Answer: Option C
:
C and D

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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