Chrome-magnesite refractories and method of preparation
US4574119A · kind A · utility
2Cited by
6References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1984 |
| Grant date | Mar 4, 1986 |
| Priority date | — |
| Expiry date | Jun 11, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B35/047
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A refractory brick made from a size graded batch comprising 20-30 weight percent magnesite containing less than 0.8 weight percent silica, and the balance a chrome ore. The chrome ore includes oxides of chromium, aluminum and iron wherein the ratio between the oxides of chromium and the oxides of aluminum and iron is greater than 2 to 1. The silica content of the chrome ore is less than 2.7 weight percent, the iron oxide content is less than 17 weight percent, and the chrome ore to magnesite ratio is between 2.33 to 4 to 1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.