How is copper extracted from low grade copper ores? - Vidyadip

Question

How is copper extracted from low grade copper ores?

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Answer

Copper is extracted by hydrometallurgy from low grade ores. It is leached out using acid or bacteria. The solution containing copper ions $(Cu^{+2})$ is treated with scrap iron, zinc or $H_2$ as:
$\text{Cu}^{2+}(\text{aq})+\text{H}_{2}(\text{g})\ \xrightarrow{\ \ \ \ \ \ \ }\text{Cu}(\text{s})+2\text{H}^{+}(\text{aq})$
$\text{Cu}^{2+}(\text{aq})+\text{Fe}(\text{s})\ \xrightarrow{\ \ \ \ \ \ \ }\text{Cu}(\text{s})+\text{Fe}^{+2}(\text{aq})$
In this way, copper, is obtained.

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