| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for estimating reduced powderizing amount of a sintered ore in a blast furnace, with which the difference of the powderizing ratio due to the difference of sintered ore brands which is difficult in the conventional method for estimating the reduced powderizing amount, can be detected and further, without needing the change of a testing condition according to an operation. SOLUTION: In the method for estimating the reduced powderizing amount of the sintered ore in the blast furnace as ore-series raw material, the blending amount of CO is set to 10-80 vol%, and mixed gas of CO, CO<SB>2</SB>and N<SB>2</SB>satisfying 0.4≤CO/(CO+CO<SB>2</SB>)≤0.9, is used as the reducing gas when estimating the reduced powderizing amount. COPYRIGHT: (C)2010,JPO&INPIT |
