东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2008, Vol. 29 ›› Issue (4): 581-584.DOI: -

• 论著 • 上一篇    下一篇

微型旋风器分离超细粉尘的性能

郝文阁;王尚元;丁姝;吴岩;   

  1. 东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院;东北大学资源与土木工程学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2008-04-15 发布日期:2013-06-22
  • 通讯作者: Hao, W.-G.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2002AA642010);;

On the separation performance of superfines dust by mini-cyclones

Hao, Wen-Ge (1); Wang, Shang-Yuan (1); Ding, Shu (1); Wu, Yan (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2008-04-15 Published:2013-06-22
  • Contact: Hao, W.-G.
  • About author:-
  • Supported by:
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摘要： 针对分级领域中存在的问题,研究微型旋风分级器的分级性能,目的是利用微型旋风分级器将1μm左右的超细粉体从细粉中分离出来.首先建立旋风分级器的分离二维数学模型,模型方程解析证实粉尘分级效率只与Stk数有关,对3种微型旋风器在不同进口风速下进行实验研究.实验结果表明:分级效率与Stk数之间的关系在Rosin-Rammler坐标上为一条直线,用新理论计算的分级效率值较其他理论能更好地接近实验值,是一个相对比较准确的分离效率计算方法.对3组微型旋风器在入口风速为15~25 m/s范围内分级时,分级粒径可以达到0.6μm.

关键词: 微型旋风器, 超细粉体, 分级粒径, 分级效率

Abstract: Mini-cyclones are used to separate superfines about 1 μm from industrial dust for dust classification. A 2-D mathematical model is thus developed, by which the dust classification efficiency is analyzed and proved just in relation to Stokes number. Experimental investigation was conducted for 3 types of mini-cyclones at different air flowrates through their inlets. The result showed that a linear relationship is found between the classification efficiency and Stokes number in the Rosin-Rammler coordinates. A new theoretical expression is derived here, by which the calculated value of classification efficiency is closer to the measured value in comparison with other theoretical expressions. So, it is comparatively an accurate calculation method of separation efficiency. When the air flowrate is in the range from 15 to 25 m/s at the inlets of 3 types of mini-cyclones in experiment, the sizing size of superfines for classification can come down to 0.6 μm.

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