Process for producing liquid metal and facilities for carrying out the process
US6235082A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 24, 1998 |
| Grant date | May 22, 2001 |
| Priority date | — |
| Expiry date | May 24, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/134
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
With a method for producing liquid metal from charging substances containing ore and of fluxes, the ore is directly reduced to sponge metal in at least one reduction zone (5, 7, 8), the sponge metal is melted along with fluxes in a melt-down gasifying zone (11) under the supply of carbon carriers and an oxygen-containing gas. A CO- and H.sub.2 -containing process gas serving as a reducing gas is produced, fed into the reduction zone (5, 7, 8), reacted there, and subsequently withdrawn, wherein slagforming fluxes, in particular calcium carbonate, dolomite etc., gas are calcined by the process gas in a calcining zone (26') that is separate from the reduction zone (5, 7, 8) and melt-down zone (11). To be able to employ slagforming fluxes of any desired grain and without disturbances of the reduction process, the calcining zone (26') is connected in parallel to the reduction zone (5, 7, 8) with respect to the material flow and the calcined fluxes are fed into the melter gasifier (10) directly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.