Plasma-assisted fine particle classification.
Plasma-assisted fine particle classification.
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等离子体辅助细颗粒分类。
DOI：
10.2472/jsms.34.1352
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
N. Ishibashi
中科院分区：
文献类型：
--
作者：
T. Kurobe;O. Imanaka;N. Ishibashi
通过使用盖斯勒管中的辉光放电正极柱，开发了等离子体辅助细颗粒分类方法。这些粒子在等离子体中带电，其表面覆盖着由负离子和正离子双层组成的鞘。带电粒子在高压下飞向正极。然而，飞行模式受到重力以及等离子体离子与飞行粒子的碰撞的影响。新开发的分级装置由三个主要部分组成：盖斯勒管、粉末供应器和排气系统。将氧化铝、二氧化硅、碳化硅等细粉在1Torr、直流电压2kV、管电流1.5mA的条件下进行分级。实验发现，粗颗粒落在供粉器入口附近，而细颗粒则飞散。分级特性可以由颗粒的带电模式和电特性来确定。
A Plasma-assisted fine particle classification method has been developed by using a positive column of glow-discharge in the Geisler tube. The particles are charged in plasma, in which their surface is covered with the sheath made of double layers of negative and positive ions. Charged particles fly to the positive electrode under high tension voltage. The flying mode, however, is influenced by the gravity and the collision of the plasma ions to the flying particles. A newlydeveloped classification setup is made with three main parts -the Geisler tube, a powder supplier and an evacuation system. The fine powders such as those of alumina, sillica and silicon carbide, were classified under the condition of DC voltage of 2kV and the tube current of 1.5mA at 1Torr. It was found from the experiments that the coaser particles fell down near the inlet of the powder supplier, but the finer ones flew apart from it. The classification characteristics may be determined by the charging mode and the electric property of particles.