Alkali resistant silica refractory
US6313057A · kind A · utility
5Cited by
9References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 8, 1999 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Oct 8, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/14
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A fused silica refractory material made from quartz grains and a method of making the material which contains calcium oxide binder in an amount less than one weight percent. The reduction in calcium oxide binder prevents the degradation of fused silica refractory bricks in furnace environments containing alkali vapors, such as in oxygen-fuel fired glass furnaces. The invention also includes a method of preventing the degradation of silica refractory material by alkalis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.