Process for producing nickel hydroxide from elemental nickel
US5824283A · kind A · utility
4Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 28, 1997 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Apr 28, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/70
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
This process produces nickel hydroxide from elemental nickel. Introducing elemental nickel into at least a 4N aqueous ammonia solution forms a mixture. Activating the nickel powder of this mixture allows the nickel to react with oxygen in the solution. This results in the dissolving of the nickel, producing a loaded solution containing nickel and hydroxyl ions. The redox potential of the solution remains negative during the dissolution of nickel. Distilling the loaded solution to vaporize the aqueous ammonia solution results in the precipitating of nickel hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.