Some data are given below :(Iron tank, Carbon lining, Cryolite, Carbon

1.	Some data are given below :(Iron tank, Carbon lining, Cryolite, Carbon blocks, Electricity)1. Identify the metal whose metallurgy is associated here.2. Explain the extraction of this metal.
Answer» 1. Aluminium. 2. The alumina is dissolved in a mixture of molten cryolite. It is then electrolysed in a rectangular steel tank, with carbon lining, which serves as cathode. Anode is a set of thick carbon rods suspended from top into the fused Al₂O₃ . The temperature is maintained as 1200 K and 1310 K. Oxygen is evolved at anode which reacts with carbon of anode producing CO and CO₂ . Aluminium formed at the cathode gets collected.

Some data are given below :(Iron tank, Carbon lining, Cryolite, Carbon blocks, Electricity)1. Identify the metal whose metallurgy is associated here.2. Explain the extraction of this metal.

Answer»

1. Aluminium.

2. The alumina is dissolved in a mixture of molten cryolite. It is then electrolysed in a rectangular steel tank, with carbon lining, which serves as cathode. Anode is a set of thick carbon rods suspended from top into the fused Al₂O₃ . The temperature is maintained as 1200 K and 1310 K. Oxygen is evolved at anode which reacts with carbon of anode producing CO and CO₂ . Aluminium formed at the cathode gets collected.

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Some data are given below :(Iron tank, Carbon lining, Cryolite, Carbon blocks, Electricity)1. Identify the metal whose metallurgy is associated here.2. Explain the extraction of this metal.

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