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    • 64. 发明公开
    • METHOD OF PRODUCING COATED PARTICLES
    • VERFAHREN ZUR HERSTELLUNG BESCHICHTETER TEILCHEN。
    • EP0663456A1
    • 1995-07-19
    • EP94922370.5
    • 1994-08-12
    • NISSHIN FLOUR MILLING CO., LTD.
    • YAMADA, YukiyoshiFUYUKI, TadashiAKIYAMA, SatoshiHAMADA, YoshiakiKURODA, Eisuke
    • C23C14/00
    • C23C14/223B22F1/025C23C14/22C23C16/4417
    • When producing coated particles by charging core particles into a coating space and vacuum-evaporating coating material on the core particles, or by bringing gaseous coating material into contact with the core particles, the core particles having a mean particle size of not larger than 10µm and having a powder distribution [D M /5, 5D M ] ≧ 90% are so dispersed that the degree of dispersion β is greater than 70%. The core particles can be coated with the coating material even though the particles consist only of very small particles or consist mainly of very small particles. The resultant coated particles are uniformly coated with the coating material and do not contain uncoated particles or partially coated particles due to aggregation. The method imparts an extremely great merit to the industrial production.
    • 当通过将核心颗粒充填到包覆空间中并在芯颗粒上真空蒸发涂层材料或通过使气态涂层材料与芯颗粒接触来制造涂覆颗粒时,芯颗粒的平均粒度不大于10微米 m且具有粉末分布[DM / 5DM]> / = 90%的分散度使得分散度β大于70%。 即使颗粒仅由非常小的颗粒组成或主要由非常小的颗粒组成,核心颗粒可以涂覆涂层材料。 所得到的涂覆颗粒均匀地涂覆有涂层材料,并且由于聚集而不包含未涂覆的颗粒或部分涂覆的颗粒。 该方法给工业生产带来极大的优点。