Method for producing bulk fused silica
US6378337B1 · kind B1 · utility
2Cited by
9References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2000 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | Oct 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03B2207/36
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method for preparing high-purity, bulk fused silica includes supplying silane gas, a gaseous fuel, and oxygen gas to a combustion burner. Silica particles are formed by passing the silane gas into a flame formed by the combustion reaction of the gaseous fuel with the oxygen gas while maintaining the ratio of the flow rate of the gaseous fuel to the flow rate of the silane gas no less than twelve and the ratio of the flow rate of the gaseous fuel to the flow rate of the oxygen gas no less than three. The silica particles formed are immediately deposited onto a hot bait to form a boule.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.