Bipolar electrode for Hall-Heroult electrolysis
US4529494A · kind A · utility
23Cited by
5References
16Claims
0Family size
Assignee
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Key dates
| Filing date | May 17, 1984 |
| Grant date | Jul 16, 1985 |
| Priority date | — |
| Expiry date | May 17, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/12
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A monolithic bipolar electrode for the production of primary aluminum by molten salt electrolysis is composed of a cermet anodic layer 10, a conductive and diffusion-resistant intermediate layer 14, and a refractory hard metal cathodic layer 20, with the edges covered by an electrolyte-resistant coating. The intermediate conductive layer 14 has a coefficient of thermal expansion intermediate to the anodic and cathodic layers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.