Research on Eliminating Interfering Factors in Measuring Wettability of Fine Coal Dust

摘要：

It is an effective technique to reduce the concentration of coal dust by water spraying in mine. The opinions about the effects of coal dust suppressants are different in academic world. The authors found the low repeat rate and low reliability of the measurements in ordinary lab testing of coal dust wettability. The reasons include the influence of air diaphragm, the difference oftbe filling density oftbe dust in the tube and the interference of the hydrophilic property of the glass tube. To eliminate interfering factors in evaluating coal dust wettability measurements, the authors developed LM-3 device for briquette making of coal dust, composing the equipment of coal dust sample making together with DQ-2.5 digital stress testing machine. The authors suggest that the coal dust samples should be made by using briqueUing technique with pressure of 7-8 Mpa through adjusting the pressure at 0-6.5 t/cm2. The effect of this technique was validated in the lab dust suppression tests using an apparatus MCYZ.

关键词： coal mine coal dust wettability suppressant

作者: LI Man XU Haihong SHU Xinqian

作者单位: Department of Environmental Engineering,North China Institute of Science and Technology,Yanjiao,Beij Department of Environmental Engineering,North China Institute of Science and Technology,Yanjiao,Beij School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 1

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 1497-1500

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）