| 摘要 |
A first object of the present invention is to provide a method of operating a blast furnace which enables substantial improvement of gas permeability and liquid permeability for stable operation of the blast furnace, and a second object thereof is to provide a blast furnace which enables use of a low grade solid reducing agent to reduce a quantity of high quality coke used for operation of a blast furnace and furthermore enables injection of pulverized coal at a rate of 200 Kg/ton-pig or more. In the present invention, to achieve the objects described above, in operation of a blast furnace for manufacturing pig iron in which coke and ores are charged from the furnace top, a high strength block packed area is formed in a core section of the blast furnace. <IMAGE> |
