Aluminium reduction cells
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United States of America Patent
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Sep 23, 1986
Grant Date -
N/A
app pub date -
Nov 28, 1984
filing date -
Nov 29, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An aluminium reduction cell includes a potlining 16, which may be of alumina, with cathode current collectors 24, 32 embedded therein. The cell floor has an array of depressions 22 with at least one collector at the bottom of each depression. The depressions are filled with metal-wettable bodies 20, e.g. 5-20 mm diameter balls of titanium diboride, sized to prevent the entry of electrolyte or sludge. The depressions may be elongate in a direction perpendicular to the horizontal magnetic field in the cell.
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