煤尘表面特性及润湿机理的研究  

Study on the coal dust surface characteristics and wetting mechanism

作　　者：杨静[1] 谭允祯[1] 王振华[1] 商岩冬[1] 赵文斌[1] 

机构地区：[1]山东科技大学矿山灾害预防控制省部共建教育部重点实验室,山东青岛266510

出　　处：《煤炭学报》2007年第7期737-740,共4页Journal of China Coal Society

基　　金：山东省科技攻关项目(2005GG3208105;2005GG3210003)

摘　　要：通过煤尘的红外光谱实验、电泳实验和正向渗透实验系统,研究了煤尘的表面化学结构、表面电性和表面润湿性,对煤尘表面润湿机理进行了研究,阐明了非离子表面活性剂溶液对煤尘的润湿效果好于阴离子表面活性剂溶液的机理.研究表明,溶液对煤尘的润湿性能不仅取决于溶液的气-液表面张力,而且取决于溶液与煤尘的固-液界面张力,溶液与煤尘的固-液界面张力的大小,又与煤尘的疏水性、电性、溶液添加剂(如表面活性剂)的结构、性质等密切相关.On the basis of the systematic study of coal dust in the surface chemical structure, surface electrical property and surface wetting characteristics through infrared spectrum experiment, electrophoresis experiment and downward capillary seep experiment, the surface wetting mechanism were studied. Clarified the fact that nonionic surfactant has a better wetting effect than ionic surfactant which used in the experiment. The research shows that wetting ability of the solution to the coal dust is depended not only on gas-liquid surface tension, but also on the solid-liquid surface tension, The quantity of solid-liquid surface tension is depended on the hydrophobic property and electrical property of coal dust, the structure and character of additive in solution （such as surfactant）.

关 键 词：煤尘 表面特性 润湿机理 表面活性剂 

分 类 号：TD714.1[矿业工程—矿井通风与安全]