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采用光学接触角测量仪,测量了不同煤质的微细煤尘对去离子水以及添加氯化钙、水玻璃、丁二酸纳、十二烷基磺酸钠、十二磺基硫酸钠等表面活性剂水溶液的润湿接触角。通过红外光谱技术,对煤尘表面的化学结构特别是含氧官能团进行了测量,并分析了其对颗粒表面的表面活性剂溶液润湿性能的影响,同时对不同煤质微细煤尘进行了工业分析,建立了煤尘润湿性与煤尘煤质参数及其表面含氧官能团含量之间的耦合关系,研究发现煤尘的固定碳含量、表面含氧官能团中的羰基基团、游离OH基团对煤尘的润湿性能具有显著的影响。
Optical contact angle measuring instrument was used to measure the effect of different coal dusts on deionized water and on the surface of calcium chloride, water glass, sodium succinate, sodium dodecyl sulfate and sodium dodecyl sulfate Wetting contact angle of aqueous solution of active agent. By infrared spectroscopy, the chemical structure of coal dust, especially the oxygen-containing functional groups were measured and analyzed the impact of the wettability of surfactant solution on the particle surface, at the same time on different coal fine coal dust industrial The relationship between coal dust wettability and coal dust coal quality parameters and the content of oxygen functional groups on the surface was established. It was found that the fixed carbon content of coal dust, the carbonyl groups in the oxygen functional groups on the surface, the free OH groups The lump has a significant effect on the wetting properties of coal dust.