Suppression of cyanide formation in electrolytic cell lining
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United States of America Patent
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Jul 23, 1996
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N/A
app pub date -
Jan 20, 1995
filing date -
Jan 20, 1995
priority date (Note) -
Expired
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Abstract
Disclosed is an improved carbonaceous material suitable for use as a liner in an aluminum producing electrolytic cell, the cell using an electrolyte comprised of sodium containing compounds and the carbonaceous material penetrable by sodium or nitrogen and resistant to formation or accumulation of sodium cyanide during operation of the cell. The carbonaceous material is comprised of carbon and a reactive compound capable of reacting with one of sodium, nitrogen and sodium cyanide during operation of the cell to produce aluminum, the reactive compound present in an amount sufficient to suppress formation or accumulation of cyanide compounds in the liner.
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