Point feeder for aluminium electrolysis cell

Details Point feeder for aluminium electrolysis cell Point feeder for aluminium electrolysis cell

1990-07-03

1991-09-03

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204247, C25C 314, C25C 322

Patent

active

050451685

ABSTRACT:
In a feeder for feeding additives such as aluminium oxide or fluoride to aluminium electrolysis cells, the additives are fed to the electrolytic bath of the cell through a hole in the bath crust via a pipe stub. The hole is made by means of a crust breaker having a crow bar connected to a piston/cylinder device. The point feeder is made of a housing comprising an upper part, wholly or partly open to the surroundings, and a lower part closed the crust and other parts of the surroundings. The crow bar extends down through a guide in the form of a bushing, which is provided between the upper and lower part. Further, the pipe is attached to the lower part, or is provided under the lower part, for instance on the gas apron of the anode casing in a Soederberg cell.

REFERENCES:
patent: 3192140 (1965-06-01), Zorzenoni
patent: 3977950 (1976-08-01), Tortil
patent: 4435255 (1984-03-01), Casdas
patent: 4437964 (1984-03-01), Gerphagnon et al.

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