Reduced temperature aluminum production in an electrolytic cell having an inert anode
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United States of America Patent
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Feb 29, 2000
Grant Date -
N/A
app pub date -
Sep 10, 1997
filing date -
Jun 26, 1997
priority date (Note) -
Expired
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Abstract
Aluminum is produced by electrolytic reduction of alumina in a cell having a cathode, an inert anode and a molten salt bath containing metal fluorides and alumina. The inert anode preferably contains copper, silver and oxides of iron and nickel. Reducing the molten salt bath temperature to about 900-950.degree. C. lowers corrosion on the inert anode constituents.
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