Ledge-free aluminium smelting cell

Details Ledge-free aluminium smelting cell Ledge-free aluminium smelting cell

C - Chemistry, Metallurgy

25

C

C25C 3/08 (2006.01)

Patent

CA 2088482

An aluminium smelting cell comprising side walls (5) and a floor (2) defining an active cathode, an anode (3) overlying the cathode floor (2), some said side walls (5) being covered by a wetted cathode material (6), such as one contained TiB2, so that the covered side walls become active cathode surfaces on which a film of aluminium metal forms to protect the side wall parts against bath attack, thereby enabling the cell to operate at the desired temperatures without the usual protective side ledge of the frozen electrolyte material.

Cellule de fusion d'aluminium comprenant des parois latérales (5) et un plancher (2) déterminant une cathode active, une anode (3) surplombant le plancher de la cathode (2), certaines desdites parois latérales (5) étant recouvertes par un matéraiu de cathode mouillé (6), contenant, par exemple du TiB2, de telle sorte que les parois latérales recouvertes deviennent des surfaces de cathode actives sur lesquelles se forme un film de métal d'aluminium protégeant les parties des parois latérales contre l'attaque par le bain, permettant ainsi à la cellule de fonctionner aux températures désirées sans recours latéral de protection habituelle du matériau d'électrolyte refroidi.

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