Method of increasing the cold material charging capacity in the top-blowing production of steel
US4439234A · kind A · utility
1Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 16, 1983 |
| Grant date | Mar 27, 1984 |
| Priority date | — |
| Expiry date | Feb 16, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Pig iron is refined by top blowing with oxygen and injecting inert gas from the bottom. The slag formation is minimized by controlled addition of lime to match the formation of slag components as they are generated by the process. This increases the capacity of the melt to receive a cold charge, e.g. of scrap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.