An electrolytic reduction cell and collector bar

Details An electrolytic reduction cell and collector bar An electrolytic reduction cell and collector bar

C - Chemistry, Metallurgy

25

C

C25C 3/16 (2006.01) C25C 7/00 (2006.01) C25C 7/02 (2006.01)

Patent

CA 2401204

An electrolytic reduction cell for the production of a metal is disclosed. The cell includes a plurality of collector bars (21). Each collector bar includes an elongated first section (27) that contacts the cathode (15) and at least one end section (29) that extends through one of the cell side walls (5) and is electrically connected to the electrical current carrier. The cell is characterised in that, for the purpose of controlling current distribution, the first section of each collector bar includes a core (31) of relatively high electrical conductivity material and an outer housing (33) of a more mechanically and chemically resistant material than the core material and the end section of each collector bar is formed from relatively low thermal conductivity material.

L'invention concerne une cuve de réduction électrolytique pour la production d'un métal. Cette cuve comprend une pluralité de barres (21) collectrices. Chaque barre collectrice comprend une première section (27) allongée entrant en contact avec la cathode (15) et au moins une section (29) terminale qui s'étend à travers une des parois (5) latérales de la cuve et qui est connectée électriquement au porteur de courant. La cuve est caractérisée en ce que la première section de chaque barre collectrice comprend un noyau (31) de matériau à conductivité électrique relativement élevée et une enveloppe (33) externe constitué d'un matériau chimiquement et mécaniquement plus résistant que le matériau du noyau, et la section terminale de chaque barre collectrice est formée d'un matériau à conductivité thermique relativement faible, cette structure permettant de réguler la distribution du courant.

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