C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/151, 204/208
C25C 3/08 (2006.01) C25C 3/16 (2006.01)
Patent
CA 1307235
ABSTRACT In an aluminium reduction cell including a cell lining and embedded therein at least one cathode current collector including a high temperature section comprising an electrically conducting refractory material such as titanium diboride, generally in conjunction with molten aluminium metal, corrosion is a problem. The invention provides a substance to protect the collector section. The substance may be a liquid impermeable layer e.g. particulate material impregnated with a molten fluoride-or chloride- containing salt mixture; or a getter such as particulate aluminium to react chemically with gaseous corrosive species. Combinations of these substances may be used, optionally in conjunction with a solid layer such as an alumina or aluminium metal tube. PP/JR/5460
515838
de Respiris Donald L.
Dewing Ernest W.
Gesing Adam J.
Mitchell David N.
Reesor Douglas N.
Alcan International Limited
de Respiris Donald L.
Dewing Ernest W.
Fetherstonhaugh & Co.
Gesing Adam J.
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