Abstract： Aiming at the problem that dust particle size can affect wettability of mine dust surface, five kinds of typical coal samples were chosen to test the influence of particle size on wetting contact angle and dustfall efficiency. Thus the wettability databases of mine dust surface were established under the action of dustfall agent. The databases were fitted numerically using fitting software Orange 7.5, and the visual curves and equations were obtained. The results show that based on the law of fitting equation of high parallelism, the general rule that the dust particle size affects the wettability of mine dust surface is that the mine dust whose particle size is between 9 and 11 μm has the greatest influence on the wettability of mine dust surface.

Keywords: particle size; contact angle; dustfall efficiency; wettability

中图分类号：TD714           文献标志码：A

文章编号：1008-5548（2015）04-0099-04

DOI:10.13732/j.issn.1008-5548.2015.04.023

收稿日期：2014-08-24， 修回日期：2014-08-30，在线出版时间：2015-08-26。

第一作者简介：温禄淳（1985—），男，工程师，硕士研究生，研究方向为矿用防爆电气产品的检测检验。 E-mail：249286379@qq.com。