Method of, and arrangement for, reducing oxide-containing fine-particle ores
US4518417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1983 |
| Grant date | May 21, 1985 |
| Priority date | — |
| Expiry date | Jan 5, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/134
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
In a method of reducing oxide-containing fine-particle ores, the ore particles are melted and reduced in a rotationally symmetric melting vessel in the presence of solid, liquid or gaseous carbon carriers by the action of a plasma jet of a plasma burner. At least part of the ore particles to be reduced are introduced through charging openings in the side wall of the vessel and are set in a cyclonic rotational movement. The plasma jet of the plasma burner is generated within the rotating particle stream. An arrangement for carrying out the method comprises a refractorily lined melting vessel having a rotationally symmetric inner space and including charging openings for the addition of oxide-containing ore particles and fluxing agents. There are openings for solid, liquid or gaseous carbon carriers and other fluxes, and at least one plasma burner. In the side wall of the melting vessel charging lances are arranged, which are directed into the space between the side wall of the melting vessel and its central axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.