Aluminium reduction cell
US4737253A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1986 |
| Grant date | Apr 12, 1988 |
| Priority date | — |
| Expiry date | Aug 13, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/08
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
In an aluminium reduction cell including a cell lining and embedded therein at least one cathode current collector including a high temperature section comprising an electrically conducting refractory material such as titanium diboride, generally in conjunction with molten aluminium metal, corrosion is a problem. The invention provides a substance to protect the collector section. The substance may be a liquid impermeable layer e.g. particulate material impregnated with a molten fluoride-or chloride-containing salt mixture; for a getter such as particulate aluminium to react chemically with gaseous corrosive species. Combinations of these substances may be used, optionally in conjunction with a solid layer such as an alumina or aluminium metal tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.