How is copper extracted from low grade copper ores?

Explanation

### Step-by-Step Text Solution:

1. **Understanding Low-Grade Copper Ores**: Low-grade copper ores contain a lower percentage of copper and are not economically viable for extraction using traditional methods. Therefore, alternative methods like hydrometallurgy are employed.

2. **Process of Hydrometallurgy**: The extraction of copper from low-grade ores is primarily done through a process called hydrometallurgy, which involves leaching.

3. **Leaching Process**: In leaching, the copper is extracted by dissolving it in a suitable liquid, typically a solution containing acids or other chemicals. The impurities present in the ore do not dissolve in this liquid.

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