Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1984-10-02
1986-06-03
Andrews, R. L.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204243R, 204243M, C25C 300
Patent
active
045928215
ABSTRACT:
The present invention concerns an electrolysis tank for the production of aluminum by means of the Hall-Heroult process, which operates at above 250,000 amperes, in particular from 270,000 to 320,000 amperes.
The connection between each riser (7) and the anodic bus bar (5) is made by way of flexible electrical conductors (8); the central riser (7C) is disposed on the axis of the series, the two intermediate risers (7B, 7D) and the two equally spaced lateral risers (7A, 7E) through which substantially equal current strengths flow are connected to six upstream cathodic collectors (3), two central collectors (3A, 3B) two intermediate collectors (3C, 3D) and two lateral collectors (3E, 3F), and three downstream cathodic collectors (4), a central collector (4A) and two lateral collectors (4B, 4C).
Equipotential connections provide for balancing of the current between the different sections of the upstream and downstream collectors.
Those tanks are very stable in operation and have a high level of efficiency in regard to energy consumption.
REFERENCES:
patent: 4313811 (1982-02-01), Blanc
patent: 4474611 (1984-10-01), Blanc et al.
Chaffy Joseph
Keinborg Maurice
Langon Bernard
Aluminium Pechiney
Andrews R. L.
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