ULTRASONIC FRAGMENTATION OF AGGLOMERATE POWDERS

被引：113

作者：

KUSTERS, KA

PRATSINIS, SE

THOMA, SG

SMITH, DM

机构：

[1] UNIV CINCINNATI,DEPT CHEM ENGN,CINCINNATI,OH 45221

[2] UNIV NEW MEXICO,CTR MICROENGINEERED CERAM,NSF,ALBUQUERQUE,NM 87131

来源：

CHEMICAL ENGINEERING SCIENCE | 1993年 / 48卷 / 24期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0009-2509(93)80258-R

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A theory for ultrasonic fragmentation of agglomerate particles suspended in liquids is presented. Imploding cavitation bubbles rupture the agglomerates. An expression for the fragmentation rate as a function of ultrasonic power and agglomerate size is derived. A sectional model for fragmentation is used to simulate the evolution of the particle size distribution of silica and titania powders suspended in water. The fragmentation rate expression is evaluated by comparing simulated with experimental size distributions at the self-preserving limit. The required time and energy for particle size reduction is calculated as a function of ultrasonic power input.

引用

页码：4119 / 4127

页数：9

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