矿用抑尘剂对不同粒径煤尘的润湿性能影响  

Effect of mining dust suppressant on wetting performance of different particle-size coal dust

作　　者：赵奕博 王康 徐磊 王海龙 ZHAO Yibo;WANG Kang;XU Lei;WANG Hailong(Scientific Research Center Branch of Shaanxi Coal Industry New Energy Technology Co.,Ltd.,Xi’an 710100,China;Shaanxi Coal Chemical Industry Technology Research Institute Co.,Ltd.,Xi’an 710100,China;Shaanxi Xinneng Lianhui Technology Co.,Ltd.,Xi’an 710100,China;Xi’an Shanmei New Energy Technology Co.,Ltd.,Xi’an 710014,China)

机构地区：[1]陕西煤业新型能源科技股份有限公司科研中心分公司,陕西西安710100 [2]陕西煤业化工技术研究院有限责任公司,陕西西安710100 [3]陕西新能联慧科技有限公司,陕西西安710100 [4]西安陕煤新能源科技有限公司,陕西西安710014

出　　处：《陕西煤炭》2023年第5期49-53,共5页Shaanxi Coal

摘　　要：为优化矿用抑尘剂的使用浓度及对不同类型、不同粒径煤尘的润湿性能,对曹家滩、张家峁、凉水井、小纪汗和象山煤矿的不同粒径煤尘进行试验分析。通过表面张力试验及沉降试验,发现该抑尘剂的临界胶束浓度为0.1%,且在该浓度下表面张力为37.06 mN/m,不同煤矿及不同粒径煤尘的沉降时间可控制在4~23 s内,润湿效果较好。通过保湿性试验,发现抑尘剂中添加一定比例的无机盐氯化钙,煤尘被完全润湿后失水率下降。当氯化钙含量占溶质的0.11%时,被润湿的煤尘在室温下静置24 h后含水率为40%,在高湿环境下被润湿煤尘质量逆向减少,3 h后蒸发与吸湿达到平衡,抑尘剂表现出良好的保湿性能,试验结果为现场应用提供了有价值的数据参考。In order to study the effect of the different concentration of mine dust suppressant on the wet performance of different types of coal dust with different particle size,we carried out experimental analysis on coal dust with different particle size from Caojiatan,Zhangjiamao,Liangshuijing,Xiaojihan,and Xiangshan coal mines.Through surface tension and settling experiments,it is found that the critical micelle concentration of the dust suppressant is 0.1%,the surface tension is 37.06 mN/m,and the settling time of different mines and different particle-size coal dust at the concentration can be controlled within 4~23 s with relatively good wetting effect.Through moisture retention experiments,it is found that when a certain proportion of inorganic salt calcium chloride is added to the dust suppressant,the water losing rate decreases after the coal dust is completely wetted.When the content of calcium chloride accounts for 0.11%of the solute,the water content of the wetted coal dust is 40%after left at room temperature for 24 hours.In a high-humidity environment,the mass of wetted coal dust decreases inversely,the evaporation and moisture absorption reach a balance after 3 hours,and the dust suppressant shows good moisturizing performance.

关 键 词：煤尘 表面张力 沉降时间 保湿性 润湿效果 抑尘剂 

分 类 号：TD714.4[矿业工程—矿井通风与安全]