Steelmaking
US4457777A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 1, 1982 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Sep 1, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S75/957
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The invention provides an arrangement for steelmaking comprising a steel melt and initial reaction chamber arranged to receive source material in the form of scrap and/or pre-reduced iron, an overhead lance for the introduction of an oxidizing gas to the initial reaction chamber, means for introducing, below the level of the surface of the melt in the reaction chamber, a melt stirring fluid medium, means for introducing carbonaceous material into the melt; a secondary refining chamber connecting with the initial reaction chamber at the surface level of the melt and through which the metal is arranged to pass from the initial reaction chamber; and a melt holding vessel into which the metal is passed from the secondary refining chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.