Ceramic oxide electrodes for molten salt electrolysis
US4552630A · kind A · utility
34Cited by
14References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 24, 1981 |
| Grant date | Nov 12, 1985 |
| Priority date | — |
| Expiry date | Jul 24, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A substantially non-consumable anode used in the production of aluminium from a cryolite-based fused bath containing alumina consists of a sintered self-sustaining ceramic oxide body of spinel structure which is made conductive by selective partial substitution, the introduction of non-stoichiometry or by doping so as to maintain the impurities in the produced aluminium at low levels. Preferred materials are partially-substituted nickel ferrite spinels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.