Method of operating a blast furnace with plasma heating
US4707183A · kind A · utility
8Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1985 |
| Grant date | Nov 17, 1987 |
| Priority date | — |
| Expiry date | Nov 21, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B5/023
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A blast furnace, especially for the production of hot metal for the steel industry and operated with a normal charge above the tuyere blast zone, has its hot metal production increased at least temporarily by a lateral injection of metal oxides into the zone. A supply of the thermal energy requirements for the smelting reduction of these metal oxides by electrically operated plasma torches, and the compensation of a overoxygenation resulting from the oxygen contribution of these metal oxides by the introduction of nitrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.