Direct smelting process
US6402808B1 · kind B1 · utility
32Cited by
87References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 21, 2000 |
| Grant date | Jun 11, 2002 |
| Priority date | — |
| Expiry date | Mar 21, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/134
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process for direct smelting a metalliferous feed material is disclosed. Char and fuel gas are produced by pre-treating coal with an oxygen-containing gas. The fuel gas is used to heat an oxygen-containing gas and/or to produce an oxygen-containing gas in an oxygen plant. Metalliferous feed material, char, and the oxygen-containing gas are injected into a direct smelting vessel, and the metalliferous feed material is smelted to molten metal in the direct smelting vessel using the char as a source of energy and as a reductant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.