煤尘化学组成及结构参数对煤尘润湿性的影响规律  

Study on Influence of Coal Dust Wettability by Chemical Composition and Structure Parameters

作　　者：罗根华[1] 李博[2] 丁莹莹[1] 张博[1] 

机构地区：[1]辽宁工程技术大学环境科学与工程学院,辽宁阜新123000 [2]大连交通大学土木与安全工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2016年第3期64-67,共4页Journal of Dalian Jiaotong University

基　　金：国家自然科学基金资助项目(U1261121)

摘　　要：通过煤质化学组成和结构参数对煤尘润湿性的影响规律,进而采用多元逐步回归确定主要影响因素.结果表明:1煤质化学组成是导致煤体润湿能力存在较大差异的内在因素,固定碳含量和氧含量对煤尘润湿性的影响显著,颗粒平均孔直径和比孔容与煤尘润湿性的相关性较低;2煤尘润湿性最佳线性回归方程为y=31.471+0.825[固定碳含量]-0.631[氧含量],复相关系数R=0.871.The correlation among coal dust wettability and chemical compositions and characteristic parameters of coal is analyzed,and the multiple stepwise regression is used to ascertain the main influencing factors. The results show that 1Different chemical compositions of the coal is the internal factor which lead to difference wettability of coal dust. The crrelation of pore size,specific pore volume of particles and wetting contact angle is not high,but the correlation tetwen fixed caron content and coal dust wettability is significant; 2The optimal regression equation of coal dust wettability is y = 31. 471 ＋ 0. 825 [fixed carbon content]- 0. 631[oxygen content],and the complex correlation coefficient is 0. 871.

关 键 词：煤尘 化学组成 结构参数 润湿接触角 多元逐步回归分析 

分 类 号：TD714[矿业工程—矿井通风与安全]