Direct smelting process
US6428603B1 · kind B1 · utility
39Cited by
93References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 2000 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Sep 26, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A direct smelting process and a fixed, i.e. non-rotatable, metallurgical vessel for producing metal from a metalliferous feed material is disclosed. The process is a molten bath-based process which includes injecting solid feed materials with a carrier gas into the molten bath via one or more downwardly extending lance/tuyere (11) and causing gas flow from the molten bath at:a flow rate of at least 0.30 Nm3/s/m2 at the interface between the metal layer (15) and the slag layer (16) of the molten bath (under quiescent conditions).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.