| 摘要 |
PROBLEM TO BE SOLVED: To provide a method capable of operating a blast furnace at a high tapping ratio of pig iron while maintaining a low coke ratio, using a reformed COG.SOLUTION: A method of operating a blast furnace at a high tapping ratio of pig iron, includes blowing a reformed COG thereinto at least from a shaft part of a blast furnace, and charging sintered ore of a low reducing disintegration index (RDI) to a location of a furnace-wall side and charging sintered ore of a high reducing disintegration index (RDI) to a location of a center side of the furnace upon charging the sintered ore into the furnace. |
