Furnace and method for the melt reduction of iron oxide
US4146390A · kind A · utility
8Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 28, 1977 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Mar 28, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B13/12
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A DC arc furnace has a cathodic tubular graphite electrode forming an arc with an anodic carbonaceous iron melt in the furnace. A mixture of iron oxide and carbon particles is fed to the melt via the electrode's interior with the mixture's carbon content being in excess of that stoichiometrically required to reduce the iron oxide content of the mixture, the upper end of the electrode's feeding passage being blocked so that furnace gases cannot flow upwardly and impede the mixture's downward feeding flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.