Process for treating liquid steels by injecting gas through the ladle bottom
US4957542A · kind A · utility
1Cited by
3References
20Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jun 15, 1989 |
| Grant date | Sep 18, 1990 |
| Priority date | — |
| Expiry date | Jun 15, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C7/072
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for the in-ladle treatment of liquid steels by injecting gas through the ladle bottom. The process comprises injecting at least one inert gas from locations which are distributed over the ladle bottom in such a way as to form at the surface of the liquid steel an annular swelling, the outside edge of which is close to the inside edge of the lining of the wall of the ladle. An oxidizing gas may be mixed with the inert gas for decarburization. The process is applied in particular to the treatment of carbon steels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.