Inert anode containing oxides of nickel iron and cobalt useful for the electrolytic production of metals
US6372119B1 · kind B1 · utility
24Cited by
28References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 4, 2000 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Apr 4, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F2998/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An inert anode for the electrolytic production of metals such as aluminum is disclosed. The inert anode includes a ceramic oxide material preferably made from NiO, Fe2O3 and CoO. The inert anode composition may comprise the following mole fractions of NiO, Fe2O3 and CoO: 0.15 to 0.99 NiO; 0.0001 to 0.85 Fe2O3; and 0.0001 to 0.45 CoO. The inert anode may optionally include other oxides and/or at least one metal phase, such as Cu, Ag, Pd, Pt, Au, Rh, Ru, Ir and/or Os. The Ni—Fe—Co—O ceramic material exhibits very low solubility in Hall cell baths used to produce aluminum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.