Carbon-based bodies in particular for use in aluminium production cells
US5397450A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1993 |
| Grant date | Mar 14, 1995 |
| Priority date | — |
| Expiry date | Mar 22, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/125
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A carbon containing material for use in particular as an anode of electrolytic cells for the production of aluminum by the electrolysis of alumina in a cryolite-based electrolyte, consists substantially of a mixture of one or more particulate carbonaceous material(s) with a binder based on compounds of aluminum with carbon, oxygen and/or nitrogen, such as aluminum carbide or aluminum oxycarbide, or such compounds mixed with aluminum. This binder is obtained by mixing the particulate carbonaceous material(s) with particulate aluminum and with at least one lithium compound and/or with at least one aluminum compound in a liquid carrier, and heat treating to form the binder. The liquid carrier may comprise a binding agent selected from methyl cellulose, polyvinyl alcohol and colloidal suspensions, in particular colloidal alumina.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.