MetallurgyMedium
Question
Which of the following process(es) occur(s) during the extraction of copper from chalcopyrites ?
Options
A.Froth floatation
B.Roasting
C.Bessemerisation
D.calcination
Solution
(A) Sulphides ores are generally concentrated by froth floatation.
(B) 2CuFeS2 + 4O2
Cu2S + 2FeO + 3SO2
Cu2S + FeO + SiO2 → FeSiO3 (fusible slag) + Cu2S (matte)
(C) Bessemerisation
2FeS + 3O2 → 2FeO + 2SO2
FeO + SiO2 → FeSiO3
2Cu2S + 3O2 → 2Cu2O + 2SO2
2Cu2O + Cu2S → 6Cu + SO2 (self reduction).
(B) 2CuFeS2 + 4O2
Cu2S + 2FeO + 3SO2Cu2S + FeO + SiO2 → FeSiO3 (fusible slag) + Cu2S (matte)
(C) Bessemerisation
2FeS + 3O2 → 2FeO + 2SO2
FeO + SiO2 → FeSiO3
2Cu2S + 3O2 → 2Cu2O + 2SO2
2Cu2O + Cu2S → 6Cu + SO2 (self reduction).
Create a free account to view solution
View Solution FreeMore Metallurgy Questions
The chemical composition of Slag formed during during the smelting process in the extraction of copper is :...In which of the following pair of metals, both are commercially extracted from their respective ores by self reduction m...Which of the following manufactured by the electrolysis of their fused salts....The anode mud in the electrolytic refining of silver contains :...The major role of fluorspar (CaF2) which is added in small quantities in the electrolytic reduction of alumina dissolved...