C - Chemistry – Metallurgy – 25 – C
Patent
C - Chemistry, Metallurgy
25
C
204/148
C25C 3/16 (2006.01)
Patent
CA 1230852
ABSTRACT OF THE DISCLOSURE An apparatus for producing aluminum, comprising a plurality of rectangular, electrolytic cells, disposed in at least two rows of a side-by-side arrangement of cells. Each cell comprises two long sides which are upstream and downstream with respect to current flow along the row in which it is located and two short ends which are substantially parallel to the current flow along the row. First cathode bus bars for collecting cathode current at the upstream long side of the cell extend along the outside of the short end of the cell facing the other row. Second cathode bus bars for collecting cathode current at the upstream long side of the cell are disposed in a space below the cell and substantially parallel to the longitudinal direction of the row in which the cell is located, the second bus bars being turned to the left and right in the space below each cell at a position on the downstream side of the longitudinal center line of the cell, at a distance from the center line of 0.3 d to 0.7 d for the turn in the direction toward the other row and 0.4 d to 0.7 d for the turn in the direction opposite to the other row where d is the distance from the longitudinal center line of the cell to the downstream long side of a molten aluminum zone in the cell, the turned second bus bars being extended to the outsides of the short ends of the cell. Third bus bars for collecting cathode current are provided at the downstream long side of the cell, the third bus bars and the bus bars on the outsides of the short ends being connected to rising bus bars disposed on the short ends of a downstream electrolytic cell in the same row. 0-40% of cathode current collected on the upstream long side of the cell is passed through the first bus bars and the remainder of cathode current collected on the upstream long side is passed through the second bus bars.
421971
Kato Shozo
Ujimoto Yasuhiko
Fetherstonhaugh & Co.
Sumitomo Chemical Company Limited
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