Mechanism of particle shape modification by dry impact blending

被引：18

作者：

Otani, M ^{[1
]}

Minoshima, H ^{[1
]}

Ura, T ^{[1
]}

Shinohara, K ^{[1
]}

机构：

[1] HOKKAIDO UNIV,GRAD SCH,DIV MAT SCI & ENGN,KITA KU,SAPPORO,HOKKAIDO 060,JAPAN

来源：

ADVANCED POWDER TECHNOLOGY | 1996年 / 7卷 / 04期

关键词：

D O I：

10.1016/S0921-8831(08)60488-4

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

It was confirmed that it is possible to prepare particles of different shape by a dry impact blending method in our previous study. Here, the particle shape modification process is analyzed on the basis of a mechanical model. The particle shape is assumed to be spheroidal and is represented by an inverse of the elongation index. Then the shape becomes more spherical with treatment time and peripheral velocity of the rotor irrespective of particle size, but the shape index decreases with increasing powder concentration. It is, therefore, proposed that particle shape is to be deformed by impact force and to attain the limiting condition. The experimental results with stainless steel powder were well fitted with the present model,

引用

页码：291 / 303

页数：13

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