| 摘要 |
PROBLEM TO BE SOLVED: To restrain the variations of molten iron temperature and molten iron quality by distributing ore and coke at a fixed mixing ratio on the piling surface of a raw material at the furnace top part in a blast furnace, even in the case of changing the characteristics of respective raw materials used in the blast furnace. SOLUTION: Mixed raw materials for mixing the ore and the coke, are stored in one set of furnace top bunker and a charging chute is turned by centering a center axis in the blast furnace. While gradually changing an inclining angle of the charging chute, the whole quantity of the mixed raw material stored in the furnace top bunker is charged into the blast furnace, while the charging chute goes to and comes back at least one time in the radius direction of the blast furnace. COPYRIGHT: (C)2004,JPO
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