Question:
Copper is extracted from Copper pyrites by heating in a Bessemer converter. The method is based on the principle that
Copper is extracted from Copper pyrites by heating in a Bessemer converter. The method is based on the principle that
Updated On: Feb 23, 2024
- Copper has more affinity for oxygen than Sulphur at high temperature
- Iron has less affinity for oxygen than Sulphur at high temperature.
- Copper has less affinity for oxygen than Sulphur at high temperature.
- Sulphur has less affinity for oxygen at high temperature.
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The Correct Option is A
Solution and Explanation
The method is based on the principle that copper has more affinity for oxygen than sulphur at high temperature.
Reaction of Bessemerisation
$Fes +O_2 \to FeO+SO_2$
$FeO+SiO_2 \to \underset{\text{Slag}}{{FeSiO_{3}}} ?$
$Cus +O_2 \to Cu_2 +SO_2$
$Cu_2O +\underset{\text{Copper byrites}}{{cu_2S}} { ->[{\text{Auto}}][{\text{Oxidation}}] }\underset{\text{Blister Copper}}{{Cu}} ? SO_2$
Reaction of Bessemerisation
$Fes +O_2 \to FeO+SO_2$
$FeO+SiO_2 \to \underset{\text{Slag}}{{FeSiO_{3}}} ?$
$Cus +O_2 \to Cu_2 +SO_2$
$Cu_2O +\underset{\text{Copper byrites}}{{cu_2S}} { ->[{\text{Auto}}][{\text{Oxidation}}] }\underset{\text{Blister Copper}}{{Cu}} ? SO_2$
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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