Method of producing reduced iron agglomerates
US6258149A · kind A · utility
28Cited by
12References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1999 |
| Grant date | Jul 10, 2001 |
| Priority date | — |
| Expiry date | Mar 23, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/143
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of producing reduced iron agglomerates capable of preventing oxidation in the surface layer of the agglomerates and obtaining reduced iron agglomerates having a high degree of metallization, by blowing a methane or methane-containing gas to the reduced iron oxide agglomerates incorporated with carbonaceous material at a surface temperature of 1150.degree. C. or higher during movement in a moving hearth heating type furnace at the end of reduction as the final stage of the stagnation period of the agglomerates in the heating furnace.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.