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1. AU1990065126 - Busbar arrangement for aluminum electrolytic cells

Organismo Austrália
Número do pedido 65126/90
Data do pedido 12.10.1990
Número da publicação 1990065126
Data de publicação 02.07.1992
Tipo de publicação A
CIP
C QUÍMICA; METALURGIA
25
PROCESSOS ELETROLÍTICOS OU ELETROFORÉTICOS; APARELHOS PARA ESTE FIM
C
PROCESSOS PARA A PRODUÇÃO, A RECUPERAÇÃO, OU REFINO ELETROLÍTICO DOS METAIS; APARELHOS PARA ESSE FIM
3
Produção, recuperação, ou refino eletrolítico dos metais por eletrólise de banhos fundidos
06
do alumínio
16
Dispositivos de suprimento de corrente elétrica, p. ex., barras coletoras
CPC
Requerentes Alcan International Limited
Inventores Boivin, Richard F
Huni, Jean-Paul R
Leblanc, Robert
Dados da prioridade 2000647 13.10.1989 CA
Título
(EN) Busbar arrangement for aluminum electrolytic cells
Resumo
(EN)
The invention relates to busbar arrangements for aluminum alectrolytic cells. In a first aspect, the invention provides at least one generally horizontal collector busbar (15A-15D, 16A-16D) on each side of the cell and a number of current tapping points (18A-18D, 19A-19D) along each collector busbar so that current flows along the collector busbar in opposite directions on each side of the taps. This produces changes of sign in the vertical component of the magnetic field acting on the pad in the longitudinal direction and helps to prevent pad instabilities. In a second aspect, the current taps for the collector busbars (18A-18D, 19A-19D) are vertically disposed so as to convey current well below the level of the metal pad (17) so that adverse magnetic effects caused by further distribution of the current are minimized. In a third aspect, when the cells are arranged in a row, current is conveyed between cells in a round-end under-cell crisscross arrangement with long horizontal runs (29A, 27B') of the busbars of adjacent cells being positioned close together with currents flowing in opposite directions to counteract adverse magnetic effects.

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