Reduction of iron ore in ore/coal mixtures
US6592648B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2001 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Apr 30, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/20
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of reduction of iron ore and/or waste oxides in the form of agglomerate containing carbonaceous reductant on the hearth of a furnace includes providing a bed of agglomerates on the hearth of a furnace, the bed having a height of at least about 40 mm and having at least four layers of agglomerates. The carbonaceous reductant contains sufficient volatile matter, the volatile matter having a weight of at least about 10% of the weight of the reductant. The bed of agglomerates is heated with a radiant heat source having a temperature of at least about 1450° C. to cause the top of the bed to reach a temperature in the range of 1350° C. to 1530° C. to 1500° C. to reduce iron oxides in the iron ore and/or waste oxides to metallic iron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.