Blister copper is extracted from copper pyrit | vedclass

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(A) In the metallurgy of copper,copper pyrites $(CuFeS_2)$ are roasted to remove sulfur as $SO_2$ and convert iron to $FeO$,which is removed as slag $

Vedclass · Accepted Answer

self reduction

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(A) In the metallurgy of copper,copper pyrites $(CuFeS_2)$ are roasted to remove sulfur as $SO_2$ and convert iron to $FeO$,which is removed as slag $FeSiO_3$ by adding silica $(SiO_2)$.After this,the remaining copper matte contains $Cu_2S$ and some $FeS$.This matte is subjected to Bessemerization,where $Cu_2S$ reacts with the remaining $Cu_2O$ (formed by partial oxidation of $Cu_2S$) to produce metallic copper:$2Cu_2O + Cu_2S \rightarrow 6Cu + SO_2$.This process is known as self-reduction or auto-reduction.

Blister copper is extracted from copper pyrites. After removal of slag $FeSiO_3$,blister copper is obtained by

Similar Questions

At temperatures above $1073 \ K$,coke can be used to reduce $FeO$ to $Fe$. How can you justify this reduction with an Ellingham diagram?

Which is the most impure form of iron?

Observe the following Ellingham diagram,and identify the incorrect statement regarding it.

Assertion : Coke and flux are used in smelting.
Reason : The phenomenon in which ore is mixed with suitable flux and coke is heated to fusion is known as smelting.

The materials mixed with the ore before it is subjected to smelting in the extraction of iron are:

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