粒度对煤尘表面特性及润湿性的影响

Influence of Particle Size on Surface Characteristic and Wetting Mechanism of Coal Dust

摘要: 利用比表面积和孔径分析、FTIR光谱、XPS能谱、润湿性实验等手段系统研究了粒度对煤尘的表面特性及润湿性的影响规律，研究表明：随着煤尘粒度的减小，煤尘的表面孔结构和化学结构及元素组成均发生改变，煤尘的润湿性也随着粒度的减小亲水性变弱，疏水性变强。

Abstract: In this article, surface and pore size analysis, FTIR spectroscopy, XPS spectroscopy, wettability test are applied to study the influence laws of particle size on coal dusts' surface characteristic and wettabiligy.The research shows that the coal dust surface structure, chemical composition and elements composition changed with the decrease of the granularity of coal dust. In the same time the coal dust also shows weaker hydrophilic and stronger hydrophobic.