| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for charging a raw material into a blast furnace capable of securing permeability even when performing operation of breathing a large amount of fine coal powder and improving stabilization and heat efficiency in blast furnace operation.SOLUTION: In a method for operating a blast furnace by charging a blast furnace charging raw material comprising ore raw materials such as a sintered ore, a pellet and a massive ore, and a coke into the blast furnace by using a swivel chute, when the blast furnace charging raw material is charged into the blast furnace, not only a center coke layer is formed at the axial center part of the blast furnace but also a peripheral coke layer is formed around the periphery in the furnace wall of the blast furnace. Moreover, a mixing layer of the ore raw materials and the coke is formed in the area between the center coke layer and the peripheral coke layer. |
