煤炭工程 ›› 2016, Vol. 48 ›› Issue (3): 126-129.doi: 10.11799/ce201603039

• 研究探讨 • 上一篇    下一篇

煤泥水絮凝过程絮体颗粒的分形特征研究

焦小淼   

  1. 中国矿业大学(北京)
  • 收稿日期:2015-11-11 修回日期:2016-01-20 出版日期:2016-03-10 发布日期:2016-04-08
  • 通讯作者: 焦小淼 E-mail:jiaoxiaomiao@126.com

Research on the Floc Particles Fractal Characteristics of Slime Water Flocculation Process

  • Received:2015-11-11 Revised:2016-01-20 Online:2016-03-10 Published:2016-04-08

摘要: 为研究煤泥水絮凝过程絮体颗粒的分布特征,根据分形理论建立了絮体粒度分布的分形表达式。研究发现在双对数坐标下,絮体颗粒的累积分布函数与粒径之间呈直线关系,表明絮体的粒度分布具有分形特征|絮体的粒度分形维数可定量评价絮凝过程中絮体颗粒的分布特征|粒度分形维数D和平均粒径Dave之间是负相关的关系,且各粒级含量对其影响较大,粒级范围相同时,细粒级所占的比例越大,对应的粒度分形维数越大。

关键词: 分形理论, 煤泥絮体, 粒径分布, 粒度分形维数, 絮凝过程

Abstract: The floc size distribution fractal expression was established according to the fractal theory, in order to study the distribution characteristics of floc particles of the slime water flocculation process. The results show that in the double logarithmic coordinates, the cumulative distribution function of the particle size is linear with the particle size distribution, which indicated that the size distribution of the particles has fractal characterizations; the fractal dimension of the particle size can be used to evaluate the distribution characteristics quantitatively in the flocculation process; the fractal dimension D and the average particle size of Dave are positively related, and the content of each particle has a great influence on the fractal dimension of grain size, and the smaller the proportion of fine particles, the larger the fractal dimension of the grain size in the particle system.

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