| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for charging raw material into a bell-less blast furnace by which the center charging of coke and the mixed charging of coke and ore can always and smoothly be performed. SOLUTION: When the coke and the ore stored in a plurality of furnace-top bunkers, are charged toward the furnace wall part from the central part in the radius direction of the furnace by swiveling a chute of a bell-less charging apparatus in the blast furnace while gradually increasing inclination angle thereof from zero as the vertical state, at the point of time at which discharged amount of the coke stored in one of the bunkers reaches to the prescribe amount in the range of 5-50 mass% of the amount of the coke charged per one batch, the discharge of the ore stored in the other furnace-top bunker is started so as to simultaneously charge the coke and the ore. COPYRIGHT: (C)2004,JPO
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