Hydrometallurgical process for producing finely divided iron based powders
US4927456A · kind A · utility
13Cited by
16References
13Claims
0Family size
Assignee
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Key dates
| Filing date | May 27, 1987 |
| Grant date | May 22, 1990 |
| Priority date | — |
| Expiry date | May 27, 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 iron group based metallic powders comprises forming an aqueous solution containing a source of the appropriate metal sources in a mineral acid, forming a reducible iron group based material from the solution, reducing the material to iron group based metal powder particles, subjecting the metal particles to a high temperature zone to melt a portion of the particles and to form droplets and cooling the droplets to form an essential spherical iron group based metallic powders.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.