How is leaching carried out in case of low grade copper ores?

Solution

The low grade ores are leached with a dilute solution of sulphuric acid. The metallic copper is recovered from the solution of copper (II) sulphate formed by electrolysis or by displacement with iron.

CuO (s) + H_{2} {SO}_{4} (aq) \to {CuSO}_{4} (aq) + H_{2} O {CuCO}_{3} . Cu (OH)_{2} (s) + 2 H_{2} {SO}_{4} (aq) \to 2 {CuSO}_{4} (aq) + 3 H_{2} O + {CO}_{2} (g) {CuSO}_{4} (aq) + Fe (s) \to {FeSO}_{4} (aq) + 2 Cu (s)

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

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General Principles And Processes Of Isolation Of Elements

How is leaching carried out in case of low grade copper ores?

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

Is it true that under certain conditions. Mg can reduce Al₂O₃and Al can reduce MgO? What are those conditions?

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Titanium is a metal of modern times. It is obtained as oxide. Why it could not be extracted earlier despite its wide occurence?

Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?

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General Principles And Processes Of Isolation Of Elements

How is leaching carried out in case of low grade copper ores?

Some More Questions From General Principles And Processes of Isolation Of Elements Chapter

Is it true that under certain conditions. Mg can reduce Al2O3 and Al can reduce MgO? What are those conditions?

What is the role of depressant in froth floatation process?

Titanium is a metal of modern times. It is obtained as oxide. Why it could not be extracted earlier despite its wide occurence?

Name the common elements present in the anode mud in electrolytic refining of copper. Why are they so present?

What criterion is followed for the selection of the stationary phase in chromatography?

What is the role of cryolite in the metallurgy of aluminium?

Why is zinc not extracted from zinc oxide through reduction using CO?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Is it true that under certain conditions. Mg can reduce Al₂O₃and Al can reduce MgO? What are those conditions?