| 摘要 |
PURPOSE:To blow different powders in a satisfactorily mixed state into a vessel by supplying different powders into a blowing tank after grain size adjustment, admitting gas subjected to flow rate control into the tank and mixing the different powders in a fluidized state. CONSTITUTION:The different powders are subjected to grain size adjustment in such a manner that the cumulative ratio of one grain size distribution thereof occupies >=50% the cumulative ratio of the other grain size distribution. The different powders subjected to such grain size adjustment are charged from raw material hoppers 1, 2 into the tank 3. Gaseous flow is thereafter applied thereto from another line to maintain the fluidized state in the tank 3. The empty tower velocity is maintained at the velocity of flow at the fluidization initiation velocity determined by the average particle size of each powder or above and the terminal velocity or below. The mixture thoroughly mixed in the tank 3 is conveyed via a transport pipe 4 to a distributor 5 from which the mixture is blown into a vessel 6. |
