Ironmaking by means of a smelting shaft furnace
US4921532A · kind A · utility
9Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 12, 1989 |
| Grant date | May 1, 1990 |
| Priority date | — |
| Expiry date | May 12, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B5/003
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method of ironmaking by means of a smelting shaft furnace including the steps of supplying iron ore and coke to the top of the furnace; and injecting coal and oxygen into the smelting zone of the furnace to promote combustion, to control reaction temperature and provide heat for smelting, the quantities of coal and oxygen injection being within the range of 0.7 to 1.7 of stoichiometric conditions with respect to combustion to carbon monoxide and hydrogen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.