High alumina refractory shapes
US5338711A · kind A · utility
2Cited by
7References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1993 |
| Grant date | Aug 16, 1994 |
| Priority date | — |
| Expiry date | Jun 21, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/447
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Mixes for forming high alumina refractory shapes with high resistance to aluminum penetration comprising at least about 60% by weight aluminum oxide, about 1 to 5% by weight boron phosphate, and about 5 to 15% by weight silicon carbide. A phosphorous-containing binder is added and the mix can be formed into brick which when cured or burned to a temperature below the oxidation temperature of silicon carbide can be used to minimize aluminum penetration and dross when the brick are employed in a metallurgical vessel in contact with molten aluminum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.