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CH1012
THE HALL-HEROULT PROCESS II
A number
of cells (50-100) are used in series
The cells operate at 4.7V.
Current = 100 000 -
250 000 A
To produce
1 kg Al:
3
kg alumina
68 MJ of electricity
68 MJ of electricity
Electricity
demands are extremely high.
Recycling - takes 5% of the energy required for the
production of Al metal from bauxite
on a per kg basis as only melting is required
on a per kg basis as only melting is required
