Refining of lithium-containing aluminum scrap
US4790917A · kind A · utility
11Cited by
3References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 4, 1987 |
| Grant date | Dec 13, 1988 |
| Priority date | — |
| Expiry date | Nov 4, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25C3/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method of refining lithium-containing aluminum scrap metal. An electrolytic cell is formed using molten scrap as the anode, lithium or Al-Li as the cathode and a chloride-based lithium electrolyte. The cell is operated at a temperature of about 700.degree. C. and the lithium is transferred from the scrap to the cathode. The depletion of lithium in the scrap is signalled by an abrupt rise in voltage of the cell. The remaining scrap at the anode can be used in the same way as conventional aluminum scrap and the pure Li or Al-Li alloy formed at the cathode can be used as new material for the Al-Li alloy market.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.