Question

Explain the role of cryolite in the electrolytic reduction of alumina?

Answer 1

Role of cryolite in metallurgy of aluminium.

1) Cryolite lowers the melting point of alumina from 2323K to 1140K

2) It functions as a solvent for alumina

3) It reduces the cost of the process

4) The melt of alumina and cryolite conducts electricity

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