What is the role of graphite in the electrometallurgy of aluminium ?

Explanation

**Step-by-Step Solution:**

1. **Understanding Electrometallurgy of Aluminum:**
- Electrometallurgy is a process that uses electrical energy to extract metals from their ores. In the case of aluminum, this process involves the electrolysis of aluminum oxide (Al₂O₃) dissolved in molten cryolite (Na₃AlF₆).

2. **Components of the Electrolytic Cell:**
- The electrolytic cell consists of a cathode and an anode.
- The cathode is typically made of graphite-lined iron, while the anode is made of carbon (graphite).
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