粉体工学会誌
Online ISSN : 1883-7239
Print ISSN : 0386-6157
振動流動層による粒子コーティングにおける振動周波数と振幅の影響
鹿毛 浩之大庭 府久石松 宏道小倉 裕直松野 儀三
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1996 年 33 巻 9 号 p. 711-716

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Glass beads were coated in a vibro-fluidized bed by atomizing a fine silica powder and polyvinyl alcohol solution. The coating efficiency and weight fraction of the agglomerated particles were measured under various experimental conditions, and their dependencies on the amplitude and frequency of vibration were investigated. When the humidity of outlet gas was high, the high coating efficiency and the agglomeration of core particles were observed. The efficiency of the powder coating decreased as the amplitude and the frequency increased, while agglomeration was prevented by the addition of vibration. It was confirmed that coating with high quality and high efficiency, where few agglomerates were produced and silica powder was utilized efficiently, was possible using the vibro-fluidized bed with adequate amplitude and frequency.

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