Hydrometallurigcal process for producing finely divided spherical precious metal based powders
US4731110A · kind A · utility
42Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 1987 |
| Grant date | Mar 15, 1988 |
| Priority date | — |
| Expiry date | Mar 16, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22F1/065
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing finely divided spherical precious metal based powders comprises forming an aqueous solution containing a source of at least one precious metal value forming a solid reducible precious metal material from the solution, reducing the solid material to precious metal powder particles, subjecting the precious metal based particles to a high temperature zone to melt at least a portion of the precious metal based powder particles and cooling the molten material to form essentially spherical precious metal based alloy particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.