Process and plant for avoiding metal dusting in the direct reduction of iron-oxide-containing materials
US5858058A · kind A · utility
4Cited by
8References
21Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jan 15, 1997 |
| Grant date | Jan 12, 1999 |
| Priority date | — |
| Expiry date | Jan 15, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/143
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A direct reduction process is disclosed for iron-oxide-containing materials. Synthesis gas is mixed with top gas produced during direct reduction of the iron-oxide-containing materials and is used as reduction gas for directly reducing iron-oxide-containing materials. In order to avoid or reduce metal dusting caused by an increased CO content of the reduction gas with a simple technique and equipment, the CO/CO.sub.2 ratio of the reduction gas is set at a predetermined value from 1 to 3.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.