Question:
The final step for the extraction of copper from copper pyrites in Bessemer converter involves the reaction.
The final step for the extraction of copper from copper pyrites in Bessemer converter involves the reaction.
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This is called "poling" - reduction of Cu\(_2\)O by Cu\(_2\)S.
Updated On: Apr 23, 2026
- Cu\(_2\)S + 2FeO \(\rightarrow\) 2Cu + 2Fe + SO\(_2\)
- Cu\(_2\)S + 2Cu\(_2\)O \(\rightarrow\) 6Cu + SO\(_2\)
- 4Cu\(_2\)O + FeS \(\rightarrow\) 8Cu + 2FeSO\(_4\)
- 2Cu\(_2\)O + FeS \(\rightarrow\) 4Cu + Fe + SO\(_2\)
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Concept:
In Bessemer converter, copper pyrites (CuFeS\(_2\)) is roasted to form Cu\(_2\)S and FeO. FeO is removed as slag. Remaining Cu\(_2\)S is then converted to Cu.
Step 2: Detailed Explanation:
Final step (autoreduction): Cu\(_2\)S + 2Cu\(_2\)O \(\rightarrow\) 6Cu + SO\(_2\).
Here, Cu\(_2\)O is produced by partial oxidation of Cu\(_2\)S. The reaction is self-sustaining.
Step 3: Final Answer:
Thus, correct reaction is Cu\(_2\)S + 2Cu\(_2\)O \(\rightarrow\) 6Cu + SO\(_2\).
In Bessemer converter, copper pyrites (CuFeS\(_2\)) is roasted to form Cu\(_2\)S and FeO. FeO is removed as slag. Remaining Cu\(_2\)S is then converted to Cu.
Step 2: Detailed Explanation:
Final step (autoreduction): Cu\(_2\)S + 2Cu\(_2\)O \(\rightarrow\) 6Cu + SO\(_2\).
Here, Cu\(_2\)O is produced by partial oxidation of Cu\(_2\)S. The reaction is self-sustaining.
Step 3: Final Answer:
Thus, correct reaction is Cu\(_2\)S + 2Cu\(_2\)O \(\rightarrow\) 6Cu + SO\(_2\).
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