Molten salt electrowinning method, anode and manufacture thereof
US4614569A · kind A · utility
25Cited by
7References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1984 |
| Grant date | Sep 30, 1986 |
| Priority date | — |
| Expiry date | Aug 20, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of electrowinning a metal such as aluminum from e.g. a cryolite based melt containing alumina employs an enode having as its operative surface a protective coating which is maintained by the presence of constituents of the coating dissolved in the melt. The protective coating is preferably a fluorine-containing cerium oxycompound electro-deposited in-situ from cerium species dissolved in a fluoride-based melt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.