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  1. Bateman212

    Aluminum Refining (Hall Process) Al2O3 > Al / CO2 / HF

    Why does the reduction of Al2O3 to Aluminum (and byproducts) take place at 4-5 volts and NOT 1-3 volts, or an even lower voltage? Why is 4-5 volts the optimum, and not 1 volt?

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