US 7,513,979 B2
Series of electrolysis cells for the production of aluminium comprising means for equilibration of the magnetic fields at the ends of the lines
Morgan Le Hervet, Saint Jean de Maurienne (France); and Nicolas Ligonesche, Saint Folquin (France)
Assigned to Aluminium Pechiney, Voreppe (France)
Appl. No. 10/599,586
PCT Filed Mar. 30, 2005, PCT No. PCT/FR2005/000758
§ 371(c)(1), (2), (4) Date Oct. 02, 2006,
PCT Pub. No. WO2005/098094, PCT Pub. Date Oct. 20, 2005.
Claims priority of application No. 04 03501 (FR), filed on Apr. 02, 2004.
Prior Publication US 2007/0205099 A1, Sep. 06, 2007
Int. Cl. C25C 3/16 (2006.01); C25C 3/12 (2006.01)
U.S. Cl. 204—244  [204/247.1; 204/243.1] 20 Claims
OG exemplary drawing
 
1. A series of electrolytic cells for the production of aluminium by means of fused bath electrolysis according to the Hall-Heroult process comprising:
a plurality of electrolytic cells arranged to form at least one first line of cells and one second line of cells that are rectilinear and parallel with each other, said cells being arranged transversally with the longitudinal axis A, A′ of each line with a constant center distance Eo between the cells, each cell having a length Lo;
connecting conductors between the cells of each line;
an internal correction circuit, comprising at least one first internal correction conductor, located along the first line on the side thereof facing the second line, one second internal correction conductor, located along the second line on the side thereof facing the first line, and at least one internal connecting conductor;
a main connecting circuit between the end cell of the first line of cells and the end cell of the second line of cells;
and wherein, for at least one of said lines of cells;
the main connecting circuit comprises at least one layer of conductors wherein each conductor in the at least one layer of conductors is connected to the end cell of the line and extends to a determined distance (D2, D2′) therefrom,
the internal correction circuit further comprising at least one rectilinear conductor, which is connected to the internal correction conductor, and is arranged perpendicularly with respect to the longitudinal axis A, A′ of the line and runs along the end cell of the line of cells, at a determined distance (D1, D1′), over a determined portion L of the length Lo of the end cell.