| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing coke which has extremely high strength without increasing pulverized coal having the particle size of ≤0.3 mm and reducing the bulk density of blended coal. SOLUTION: In the method of manufacturing coke for blast furnace by pulverizing a plurality of brands of coking coals by brands, and charging the blended coal blended to be the target coke strength DI<SP>150</SP><SB>15</SB>into a coke furnace, an inert tissue having a length size of ≥0.6 mm is divided into a size division i (=1 to m[natural number]) in length size, the degree of influence Ai(-/volume%) to coke surface breakage powder ratio DI<SP>150</SP><SB>-6</SB>of the inert tissue and/or the degree of influence Bi(-/volume%) to coke volume breakage powder ratio DI<SP>150</SP><SB>6-15</SB>of the inert tissue are predetermined by size divisions i, and the coking coals constituting the blended coal are effectively pulverized, then are blended so as to obtain the target coke strength in consideration of the difference between the degrees of influence Ai and Bi. COPYRIGHT: (C)2010,JPO&INPIT
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