Extraction of copper from copper pyrite CuFeS | vedclass

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(A) The extraction of copper from copper pyrite involves the following steps:$1$. Crushing and concentration of the ore by froth-flotation process.$2$

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$A, B, C$

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(A) The extraction of copper from copper pyrite involves the following steps:$1$. Crushing and concentration of the ore by froth-flotation process.$2$. Roasting of the concentrated ore to remove sulfur and convert iron into $FeO$,which is then removed as slag by adding silica $(SiO_2)$ as flux: $FeO + SiO_2 \rightarrow FeSiO_3$ (slag).$3$. The roasted ore is smelted in a reverberatory furnace to obtain copper matte $(Cu_2S + FeS)$.$4$. The matte is subjected to Bessemerization,where self-reduction occurs: $2Cu_2S + 3O_2 \rightarrow 2Cu_2O + 2SO_2$ and $2Cu_2O + Cu_2S \rightarrow 6Cu + SO_2$. This produces 'blister copper'.$5$. Refining of blister copper is typically done by electrolytic refining,not by carbon reduction.Therefore,steps $A, B,$ and $C$ are correct.

List-$I$	List-$II$
$1. Ti$	$A. \text{Bauxite}$
$2. Si$	$B. \text{Cerussite}$
$3. Al$	$C. \text{Van-Arkel method}$
$4. Pb$	$D. \text{Zone refining}$

Extraction of copper from copper pyrite $CuFeS_2$ involves:
$A$. Crushing followed by concentration of the ore by froth-flotation
$B$. Removal of iron as slag
$C$. Self-reduction step to produce 'blister copper' following evolution of $SO_2$
$D$. Refining of 'blister copper' by carbon reduction

Similar Questions

Mark the steel in which carbon percentage is highest.

What is Thomas slag?

Match List-$I$ with List-$II$ and select the correct answer using the codes given below the list.
List-$I$ List-$II$
$1. Ti$ $A. \text{Bauxite}$
$2. Si$ $B. \text{Cerussite}$
$3. Al$ $C. \text{Van-Arkel method}$
$4. Pb$ $D. \text{Zone refining}$

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Extraction of copper from copper pyrite $CuFeS_2$ involves:$A$. Crushing followed by concentration of the ore by froth-flotation$B$. Removal of iron as slag$C$. Self-reduction step to produce 'blister copper' following evolution of $SO_2$$D$. Refining of 'blister copper' by carbon reduction