how copper is obtained from copper sulphide write the steps involved
Answers
Answer:
The roasting process is generally undertaken in combination with reverberatory furnaces . In the roaster, the copper concentrate is partially oxidised to produce " calcine " and sulfur dioxide gas. The
stoichiometry of the reaction which occurs is:
2 CuFeS 2 + 3 O 2 → 2 FeO + 2 CuS + 2 SO 2
Roasting generally leaves more sulfur in the calcined product (15% in the case of the roaster at Mount Isa Mines [15] ) than a sinter plant leaves in the sintered product (about 7% in the case of the Electrolytic Refining and Smelting smelter [16] ).
As of 2005, roasting is no longer common in copper concentrate treatment, because its combination with reverberatory furnaces is not energy efficient and the SO 2 concentration in the roaster offgas is too dilute for cost-effective capture. [8] Direct smelting is now favored, e.g. using the following smelting technologies: flash smelting , Isasmelt , Noranda, Mitsubishi or El Teniente furnaces.
Explanation:
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Answer:
a. Roasting: Roasting is the process by which sulphide ores are concentrated. ...
b. Calcination: The carbonates ores are changed into oxides by heating strongly in the presence of excess air. ...
c. Electrolytic refining: Many metals such as copper, zinc, silver, gold, copper are refined electrolytically.