Process for the separation of calcium and nitrogen from lithium
US5019158A · kind A · utility
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2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 16, 1990 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | May 16, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B26/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process is disclosed for separating calcium and nitrogen from lithium, in which alumina is added to molten lithium and reacts to produce aluminum and lithium oxide. The aluminum reacts with the nitrogen in the lithium to produce insoluble aluminum nitride, while the lithium oxide reacts with the calcium present to produce insoluble calcium oxide and lithium. The insoluble calcium oxide and aluminum nitride may then be separated from the molten lithium, such as by filtration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.