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

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Question

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

Solution

In case of low grade copper ores, leaching is carried out using acid or bacteria in the presence of air. In this process, copper goes into the solution as Cu2+ ions.

`Cu_((s)) + 2H_((aq))^+ + 1/2O_(2(g)) -> Cu_((aq))^(2+) + 2H_2O_((l))`

The resulting solution is treated with scrap iron or H2 to get metallic copper.

`Cu_((aq))^(2+) + H_(2(g)) -> Cu_((s)) + 2H_((aq))^+`

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APPEARS IN

 NCERT Solution for Chemistry Textbook for Class 12 (2018 to Current)
Chapter 6: General Principles and Processes of Isolation of Elements
Q: 19 | Page no. 164

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Solution How is leaching carried out in case of low grade copper ores? Concept: Concentration of Ores - Leaching.
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