| 摘要 |
PROBLEM TO BE SOLVED: To provide a device for blowing fine grain ore in which the discharging quantity, i.e., the blowing quantity is kept to a constant by keeping this fluidized state to a constant, even in the case of being coarse grain. SOLUTION: This device for blowing the fine grain ore is fitted with a gas exhaust valve 50 which can exhaust gas from the upper part of an blowing tank during blowing the powdery material to a gas exhaust pipe 40 by connecting the gas exhaust pipe 40 to the upper part of the blowing tank 10.
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