METHOD FOR CHARGING SINTERED ORE INTO BLAST FURNACE

摘要

PROBLEM TO BE SOLVED: To provide a method for charging sintered ore in which high ore/coke ratio is held, the lowering of the reduction ratio is surpressed, a fuel cost in a blat furnace is reduced an the improvement of productivity is stably obtained, even in the case of injecting a large quantity of pulverized fine coal, by optimizing the distributing state of the sintered ore in an ore layer charged from the furnace top part of the blast furnace and securing a good reducing environment in the whole ore layer.;SOLUTION: When the sintered ore as the iron source is charged into the blast furnace, the sintered ore is divided into two kinds according to the high temperature characteristics, and on a coke layer charged first, the sintered ore inferior in the high temperature characteristics is charged as a lower layer, and the sintered ore having excellent high temperature characteristics is charged thereon as an upper layer so that, in the ore layer in the blast furnace, the sintered ore is piled so as to form two different layers according to the high temperature characteristics.;COPYRIGHT: (C)2002,JPO