Method of producing silicon metal particulates of reduced average particle size
US6638491B2 · kind B2 · utility
4Cited by
8References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 21, 2001 |
| Grant date | Oct 28, 2003 |
| Priority date | — |
| Expiry date | Sep 21, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B33/02
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method and apparatus of reducing the average particle size of silicon metal particulates employing a liquid oxidant extractant admixed with the silicon metal particulates while the silicon metal particulates are subjected to attrition in an attrition mill. An essentially oxidant-free silicon metal particulate product is produced, with the particulate product having an average particle size within that range of average particle sizes where the silicon metal particulates are susceptible to violent exothermic reaction with an oxidant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.