Detecting and estimating shorting phenomena in hall cells and co

Details Detecting and estimating shorting phenomena in hall cells and co Detecting and estimating shorting phenomena in hall cells and co

1987-01-27

1988-06-21

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 1T, 340650, C25C 306

Patent

active

047523620

ABSTRACT:
A method of controlling interelectrode distance when a short occurs between an anode and the cathode metal pad of an electrolytic cell. Anode current data is provided by sampling anode current at a relatively high frequency, and noting any substantial instantaneous increase in current by observing the data over a period of time. Estimates of instantaneous losses in current efficiency over a base period of time due to the shorting are then made. Current efficiency losses are reduced by repositioning the anode via a command from a cell control computer to anode positioning means or by manual adjustment of the anodes in the cell.

REFERENCES:
patent: 3812024 (1974-05-01), Goodnow et al.
patent: 3875030 (1975-04-01), Richards et al.
patent: 4431491 (1984-02-01), Bonny et al.
Hyland, W. W., "The Current Efficiency of a Shorted Anode in a Prebake Cell", Light Metals 1984, pp. 711-720.

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