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焦煤粉尘具有强黏结性、易泥化等特点。采用接触角法和正向渗透法测定焦煤的润湿性能并优选润湿剂。研究结果表明:不同煤层部位焦煤粉尘润湿性差异较大,中部煤层易于润湿;通过矿井水与蒸馏水的对比试验得出矿井水的润湿效果较好,10种润湿剂的对比试验得出非离子表面活性剂优于阴离子与两性表面活性剂,正向渗透法得出高温时润湿剂有较好的润湿效果,同时随浓度的增加在一定范围内润湿效果与之成正比;利用润湿角和润湿速度法,最终确定浓度为0.3%的JFC-6为最优润湿剂。
Coking coal dust has the characteristics of strong adhesion and easy mud. The contact angle method and the forward osmosis method are used to determine the wettability of coking coal and the wetting agent is preferred. The results show that the wettability of coking coal dust in different coal seams is quite different, and the middle coal seam is easy to wet. The comparative test between mine water and distilled water shows that the wetting effect of mine water is better. The comparison test of 10 wetting agents The nonionic surfactant is superior to the anionic and amphoteric surfactants, and the forward osmosis shows that the wetting agent has good wetting effect at high temperature, and the wetting effect is proportional to the concentration with the increase of the concentration JFC-6 was finally determined to be the best wetting agent at a concentration of 0.3% using the wetting angle and wetting speed method.