Extraction of copper from copper pyrite (CuFeS 2 ) involves (2016)

Chemistry · JEE Advanced · NTA ExamsGeneral Principles and Processes of Isolation of Elements

Extraction of copper from copper pyrite (CuFeS2) involves
(2016)
  1. crushing followed by concentration of the ore by froth-flotation
  2. removal of iron as slag
  3. self-reduction step to produce ‘blister copper’ following evolution of SO2
  4. refining of ‘blister copper’ by carbon reduction.

Answer

(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.

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