Processes for blast furnace operations
US4144053A · kind A · utility
1Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 3, 1976 |
| Grant date | Mar 13, 1979 |
| Priority date | — |
| Expiry date | Nov 3, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21B5/04
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A process of operating a blast furnace characterized by the steps of employing silica enriched coke as the coke charge, and allowing the silica to react with condensed alkalies in the furnace to form alkali silicates and thereby minimize degradation of the coke during oxidation. A silica enriched coke especially adapted for blast furnace operations containing added silica in a minimum amount of about 1% by weight, and a method of making the same by dispersing and blending the silica in the coal in a minimum amount of about 0.7% by weight before coking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.