Production of ultra-low phosphorus steel
US4456477A · kind A · utility
5Cited by
1References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1983 |
| Grant date | Jun 26, 1984 |
| Priority date | — |
| Expiry date | May 27, 2003 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21C1/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for producing an ultra-low phosphorus steel containing 0.010% or less of phosphorus is disclosed, which comprises charging a desiliconized pig iron into a top- and bottom-blowing oxygen converter, introducing a slag-forming agent in a powdered form onto the molten iron together with the top-blowing oxygen and introducing a bottom-blowing gas selected from the group consisting of an inert gas, nitrogen gas, oxygen gas, carbon monoxide gas, carbon dioxide gas and mixtures thereof during the oxygen top-blowing or during both the oxygen top-blowing and the subsequent tapping.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.