What is the function of graphite rod uesd in metallurgy of Al
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1️⃣Graphite rod is used as an anode and graphite line iron as cathode during the electrolysis of alumina.
2️⃣During the electrolysis aluminium is liberated at the cathode and oxygen at the anode.
3️⃣This oxygen reacts with the graphite anode to for CO and CO2 preventing the oxygen evolved from oxidizing aluminium.
4️⃣Thus the role of graphite in electrometallurgy of aluminium is to prevent the liberation of oxygen so that the aluminium is not oxidized by oxygen.
5️⃣Graphite being cheaper is also an advantage.
2️⃣During the electrolysis aluminium is liberated at the cathode and oxygen at the anode.
3️⃣This oxygen reacts with the graphite anode to for CO and CO2 preventing the oxygen evolved from oxidizing aluminium.
4️⃣Thus the role of graphite in electrometallurgy of aluminium is to prevent the liberation of oxygen so that the aluminium is not oxidized by oxygen.
5️⃣Graphite being cheaper is also an advantage.
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