| 高压水射流超细粉碎云母的粒度特性方程式 |
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| 引用本文： | 江山,白俊英,方湄,殷秋生.高压水射流超细粉碎云母的粒度特性方程式[J].中国安全科学学报,1995(Z1). |
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| 作者姓名： | 江山 白俊英 方湄 殷秋生 |
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| 作者单位： | 北京科技大学资源工程学院 |
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| 摘 要： | 为了弄清高压水射流超细粉碎云母的规律，本文通过假设颗粒中的校裂纹、表面裂纹和体裂纹的扩展概率相互独立，以及颗粒中发生多少个裂纹扩展的概率服从普哇松分布，推导出粒度特性方程；并认为裂纹扩展概率与水压成正比，与给料调和平均粒率成反比；然后用粒度特性方程拟合和分析了高压水射流超细粉碎云母的实验测试数据，发现高压水射流超细粉碎云母主要是云母粉中的棱裂纹扩展所致，且粒度分布由水压和给料调和平均粒度决定。
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| 关 键 词： | 高压水射流，超细粉碎，粒度分布，粒度特性方程，原生裂纹，概率 |
PARTICLE CHARACTERISTIC EQUATIONA OFULTR-FINE COMMINUTING MICAWITH HIGH PRESSURE WATER JET |
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| Jiang Scan,Bai Junying,Fang Mei,Yin Qiusheng.PARTICLE CHARACTERISTIC EQUATIONA OFULTR-FINE COMMINUTING MICAWITH HIGH PRESSURE WATER JET[J].China Safety Science Journal,1995(Z1). |
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| Authors: | Jiang Scan Bai Junying Fang Mei Yin Qiusheng |
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| Abstract: | In order to understand the process of ultra-fine comminuting mica with high pressurewater jet, the particle characteristic equation is deducted in this paper with assumption thatthe developing probability of edge crack,surface crack or volume crack in a particle is independant, and that the probbility of any crack developing in a particle is submitted to PoissonDistribution. It is considered that the developing probability of crack is proportional directlyto pressure, and inversely to feed mean particle size. Also, the experimental data of comminuting mica with water jet have been analysed, with the particle characteristic equation. Itis found that comminuting mica with water jet is mainly caused by edge crack developing,and particle size distribution depends on pressure and feed mean particle size. |
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| Keywords: | Water jet Ultra-fine comminuting Particle distribution Particle characteristic equation Prelimimary crack Probability |
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