In the extraction of copper, its sulphide ore is heated in a reverberatory furnace after mixing with silica to:
remove \(FeO\)as \(FeSiO _3\)
separate \(CuO\) as \(CuSiO _3\)
decrease the temperature needed for roasting of \(Cu _2 S\)
remove calcium as\(CaSiO _3\)
The Correct Option is A
Solution and Explanation
Top Questions on Refining
- During electrolytic refining of copper, some metals settle as anode mud. These metals are :
A. Selenium and Tellurium
B. Silver and Gold
C. Gold and Platinum
D. Zinc and Platinum
E. Selenium, Gold and Platinum
Choose the correct answer from the options given below : - Zone refining is based on the principle that
- Refining using the liquation method is the most suitable for metals with:
- Copper is extracted from copper pyrites by
- In electrolytic refining of metals, the pure metal is taken as
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Concepts Used:
General Principles and Processes of Isolation of Elements
What are Ores and Minerals?
Minerals are the naturally occurring, homogeneous inorganic solid substances. They are having a definite chemical composition and crystalline structure, hardness and color. For example, copper pyrite, calamine, etc.
Impurities in an ore are called gauge. The removal of a gauge from the ore is called concentration ore.
Several steps are involved in the extraction of pure metal from ores. Major steps are as follows –
- Concentration of the ore
- Isolation of the metal from its concentrated ore
- Purification of the metal