Steel making process
US4290802A · kind A · utility
2Cited by
3References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 29, 1980 |
| Grant date | Sep 22, 1981 |
| Priority date | — |
| Expiry date | May 29, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C5/35
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
An oxygen top-blowing steelmaking process is disclosed, which comprises preparing a molten metal suitable for producing steel in a basic oxygen furnace, carrying out the top-blowing and bottom-blowing and then tapping the resulting molten steel. The bottom-blowing is carried out at least partly during the period of time from beginning of blowing to the tapping of the melt and a powder of a slag-forming agent, such as quick lime, limestone, is introduced into the molten metal together with the top-blowing of oxygen jet injected through an oxygen lance so as to form an effective slag at an early stage of refining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.