Method of spheridizing silicon metal powders
US6780219B2 · kind B2 · utility
31Cited by
13References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 3, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Oct 15, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC30B15/00
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for spheridizing silicon metal particles is described. The method involves injecting irregular silicon metal particles into a high-temperature plasma reactor to melt at least 50 weight percent of the particles. The molten droplets are solidified to form substantially spherical silicon particles having a thin SiO coating which may be removed by treating with a weak hydroxide solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.