| 摘要 |
PROBLEM TO BE SOLVED: To provide a powder and granular material pulverizing device capable of rapidly obtaining the desired grain size by impacting bodies 311, 511 or 61(62) even when the powder and granular material has the physical properties to hardly obtain the required grain size, solving a problem that the powder and granular material stays in a pulverizing chamber 501 and is continuously subjected to the impact, allowing the powder and granular material to immediately pass a screen 5, and enhancing the efficiency of generating and collecting uniform fine particles. SOLUTION: A plurality of blade bodies 6 are disposed on a rotating body 51 (52) radially from a center of rotation closely facing the screen 5, and the material to be pulverized in the pulverizing chamber 501 is treated through pulverization by the impacting body and through shear between a vent slit 5b and the blade bodies 6, and discharged into a discharge passage 502. COPYRIGHT: (C)2005,JPO&NCIPI
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