Preparation of silicate or glass in a furnace with burners immersed in a reducing medium
US7578988B2 · kind B2 · utility
67Cited by
13References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Feb 11, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P40/50
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention relates to a process for preparing a silicate of an element chosen from alkali metals, alkaline-earth metals or rare earths, comprising a reaction between silica and a sulfate of said element in a reactor equipped with at least one submerged burner within a molten mass, said submerged burner being fed with a gas containing oxygen, an excess of fuel/reducing agent being introduced into the reactor relative to the oxygen effectively consumed. The process allows the reaction to be carried out satisfactorily and at relatively low temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.