Method of controlling aluminum electrolytic cells
US4437950A · kind A · utility
2Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 16, 1981 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Nov 16, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/20
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Increase or decrease in a quantity of alumina presenting in a bath or a metal in an aluminum electrolytic cell is detected and a quantity of electric power supplied to the cell is increased or decreased in accordance with the result of detection. The detection is made by calculating a difference between a quantity of alumina supplied to the cell during an interval between an instant at which a previous anode effect has occurred or was anticipated to occur and an instant at which a present anode effect occurs or is anticipated to occur, and the quantity of alumina consumed during the interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.