Tuyeres for a blast furnace
US4043542A · kind A · utility
1Cited by
4References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1975 |
| Grant date | Aug 23, 1977 |
| Priority date | — |
| Expiry date | Sep 30, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B7/16
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Tuyeres for a blast furnace are disclosed wherein a coating is formed on the inner and outer peripherential surfaces of the tuyere body by subjecting the surfaces to a calorizing treatment to diffuse a diffusion agent comprising a powdery mixture of alumina and aluminum at a treating temperature of about 800.degree. C. The tuyere body is shaped so as to form an inner jacket, and the walls of the tuyere body forming the inner jacket may also be subjected to a calorizing treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.