Blast furnace and method for operating a blast furnace
US10526670B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 1, 2015 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Jun 14, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/25
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
The present blast furnace and method for operating a blast furnace are able to reduce CO2 production and the amount of applied additives and heating material. The method for metal production of metal ores comprising the following steps: reducing a metal ore, particularly a metal oxide, and thereby producing furnace gas containing CO2 in a blast furnace shaft; discharging the furnace gas from the blast furnace shaft; directing at least a portion of the furnace gas into a CO2 converter and reducing the CO2 in the furnace gas into CO; directing at least a portion of the CO from the CO2 converter into the blast furnace shaft. The method produces CO as a gaseous reduction agent which may be easily introduced into the blast furnace shaft. Further, a blast furnace for metal production by reducing a metal ore designed for operating according to the method is described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.