Formation of metallic copper from the sulphid | vedclass

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Question

(B) In the extraction of copper from copper glance $(Cu_2S)$,the ore is roasted in a limited supply of air to partially convert $Cu_2S$ into $Cu_2O$:$

Vedclass · Accepted Answer

$Cu_2S + O_2 	o Cu_2S + Cu_2O + SO_2$; $2Cu_2O + Cu_2S 	o 6Cu + SO_2$

Vedclass · Answer

(B) In the extraction of copper from copper glance $(Cu_2S)$,the ore is roasted in a limited supply of air to partially convert $Cu_2S$ into $Cu_2O$:$2Cu_2S + 3O_2 	o 2Cu_2O + 2SO_2$After roasting,the temperature is increased to carry out self-reduction (auto-reduction),where the remaining $Cu_2S$ acts as a reducing agent for $Cu_2O$:$2Cu_2O + Cu_2S 	o 6Cu + SO_2$This process is known as self-reduction or auto-reduction.

Formation of metallic copper from the sulphide ore in the normal thermo-metallurgical process essentially involves which one of the following reactions?

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