Method of pre-heating a stack for aluminium electrolysis production
US7485215B2 · kind B2 · utility
2Cited by
5References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jul 21, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/06
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
The present invention relates to a method of pre-heating a pot provided with anodes and cathodes for the production of aluminium by electrolysis, said method including a first step, prior to the pot being supplied with current, during which a layer of a granular conductive material is deposited then crushed between the anodes and the cathodes, characterized in that the granular conductive material is graphite-based and in that the layer of granular conductive material only extends, after crushing, over a part of a lower surface of each anode and takes the form of contact blocks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.