Partial reduction of particulate iron ores and cyclone reactor
US5228901A · kind A · utility
6Cited by
11References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1991 |
| Grant date | Jul 20, 1993 |
| Priority date | — |
| Expiry date | Feb 25, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B13/125
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A closed-cover hot cyclone reactor is used to melt and partially reduce particulate iron or ferro-alloy ores fed to it in a stream. Tangential streams of fuel gas or, preferably, producer gas supplied by an associated bath smelter, interact with the spiralling particles as they pass through the reactor. The molten metal travels downwardly along the reactor walls and can be discharged by gravity onto the receiving bath. The system eliminates the need for pelletizing ore and coking coal in smelting of iron products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.