煤矿安全2025，Vol.56Issue(2)：47-57,11.DOI:10.13347/j.cnki.mkaq.20240942
基于氟碳表面活性剂增效的复合抑尘剂润湿抑尘特性研究
Study on wetting and dust suppression characteristics of composite dust suppressant based on enhancement effect of fluorocarbon surfactant
摘要
Abstract
Fluorocarbon surfactants could change coal structure and improve wettability characteristics,thus,it plays a significant role in coal dust prevention and control.Composite dust suppressant based on fluorocarbon surfactant(FS-31)enhancement was de-veloped,and the surface tension and contact angle characteristics were analyzed.Based on the infrared spectrum(FTIR)test and peak fitting,the changes of hydrophobic and hydrophilic functional groups of coal were quantitatively analyzed.Meanwhile,particle agglomeration behavior and characteristic particle size were studied by combining Malvin particle size experiment and scanning electron microscope test.Results show that the surface tension of binary surfactant compound solution is approximately 30 mN/m.The settling time of some solutions could be as long as 12 hours.Under the enhancement effect of fluorocarbon surfactant,the con-tact angle of coal becomes smaller and the wettability becomes better.The surface tension of 0.1% FS-31 solution and 0.05% APG,0.05% sophoricoside solution is as low as 18.04 mN/m,and the settling time of pulverized coal is as low as 74 seconds.With the ad-dition of fluorocarbon surfactant,the hydrophilic functional groups increase.The hydrophilic functional groups of coal treated by 0.3% MES,0.3% APG and 0.1% FS-31 combined solution is 2.69% and 1.37% more than those of coal treated by MES and APG combined solution and raw coal,respectively.In the same crushing conditions,there are more large coal particles and larger charac-teristic particle size.The proportion of respirable dust decreases by 53.74% .Therefore,the addition of fluorocarbon surfactant is real-istically meaningful to improve prevention and control effect of coal dust.关键词
复合抑尘剂/煤尘润湿/氟碳表面活性剂/粉尘防控/特征粒径/煤体结构Key words
composite dust suppressant/coal dust wetting/fluorocarbon surfactant/dust control/characteristic particle size/coal structure分类
矿山工程引用本文复制引用
郑春山,李灿灿,江丙友,薛生,王小涵,钱苏倩..基于氟碳表面活性剂增效的复合抑尘剂润湿抑尘特性研究[J].煤矿安全,2025,56(2):47-57,11.基金项目
国家重点研发计划资助项目(2022YFC2503201) （2022YFC2503201）
安徽省高校优青科研资助项目(2023AH030042) （2023AH030042）
