What are the methods of aluminum smelting

Smelting aluminum can be done by thermal reduction, but the cost is too high. Industrial smelting aluminum application electrolysis method, the main principle is Hall - Eru aluminum electrolysis method: With pure alumina as raw material using electrolytic aluminum, because of the high melting point of pure alumina (about 2045 deG C), it is difficult to melt, so the industry are used to melt cryolite (Na3AlF6) as flux, so that alumina dissolved in liquid cryolite at about 1000 DEG C, become cryolite and alumina melt, and then in the electrolytic cell, A carbon block is used as the anode and cathode for electrolysis.

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