Method for producing pig iron
US6458181B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Jun 16, 2000 |
| Grant date | Oct 1, 2002 |
| Priority date | — |
| Expiry date | Jun 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P10/134
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a method for producing pig iron using blast furnaces or other appropriate devices, in which materials containing iron are reduced and smelted in the presence of fuels. According to the invention, metallurgical coke can be converted into reduction gas and coke using economical organic exchange gases by combining a multistep process for exchange fuel gasification and a blast furnace process, into which the products of the gasification are fed together or separately at a height of the mouth of the tuyere or through the latter into a melt. The gasification process is also used in the prereduction or iron oxides, fine ores and ore concentrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.