Ferrocoke manufacturing method
US11486022B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2016 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Feb 1, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2290/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a ferrocoke manufacturing method by shaping and carbonizing a mixture of coal and iron ore, a hardly softening coal having a button index (CSN) of not more than 2.0 is used as the coal. The coal can be a blend of hardly softening coal and easily softening coal, and the hardly softening coal can be a coal having a button index (CSN) of 1.0 and a volatile matter of not less than 17%, and the easily softening coal can be a coal satisfying that a value obtained by multiplying CSN of easily softening coal by a blending ratio of easily softening coal in all coals is a range of 0.3-5.2. The coal can also be a blend of hardly softening coal and easily softening coal, and the hardly softening coal can be a coal having a button index (CSN) of 1.5-2.0, and the easily softening coal can be a coal satisfying that a value obtained by multiplying CSN of easily softening coal by a blending ratio of easily softening coal in all coals is nit more than 5.0.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.