THE INFLUENCE OF STRUCTURAL HETEROGENEITIES ON THE COHESIVITY AND BREAKUP OF AGGLOMERATES IN SIMPLE SHEAR-FLOW

被引：30

作者：

HORWATT, SW ^{[1
]}

FEKE, DL ^{[1
]}

MANAS-ZLOCZOWER, I ^{[1
]}

机构：

[1] CASE WESTERN RESERVE UNIV, DEPT CHEM ENGN, CLEVELAND, OH 44106 USA

来源：

POWDER TECHNOLOGY | 1992年 / 72卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0032-5910(92)88017-C

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The transmission of stress within an agglomerate, and hence its tendency to break from hydrodynamic shear, strongly depends on the arrangement of the primary particles within the cluster. The influence of structure on the dispersion process has been investigated using five types of computer-generated structures. Results of the simulations indicate that heterogeneity of the structures can account for an order of magnitude discrepancy between the critical hydrodynamic stress observed experimentally and that predicted on the basis of measurements of the cohesive strength of the solids. In addition, the simulations showed that there is no direct correlation between the fractal dimension of an agglomerate structure and its dispersibility.

引用

页码：113 / 119

页数：7

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