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首页> 外文期刊>Powder Technology: An International Journal on the Science and Technology of Wet and Dry Particulate Systems >Experimental study on synergistic wetting of a coal dust with dust suppressant compounded with noncationic surfactants and its mechanism analysis
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Experimental study on synergistic wetting of a coal dust with dust suppressant compounded with noncationic surfactants and its mechanism analysis

机译：粉尘抑制剂配混粉尘与非化学表面活性剂的协同润湿试验研究及其机理分析

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摘要

To improve the ability of water spray additives to wet coal dust, the compounding wetting characteristics of several nonionic and anionic surfactants on bituminous coal dust were studied, the surface tension, contact angle and the settling time of coal dust were measured. Results showed that the compounding of sodium dodecyl sulfate (SDS) and two other anionic surfactants exhibits an antagonism effect and reduces the wettability of water. The compounding of primary alcobol ethoxylate (JK), ethylene glycol polyoxyethylene ether (PEG800) and the anionic surfactant sodium dodecyl benzene sulfonate (SDBS) achieves the strongest synergistic effect at a mass ratio of 3:1:1. Furthermore, the infrared spectra of raw coal and coal treated with dust suppressant showed that the hydrophilicity of coal dust is improved after the treatment by dust suppressant. Finally, the synergistic effect mechanism of JFC, PEG800 and SDBS was explained from the perspective of molecular and hydrogen bond. (C) 2019 Published by Elsevier B.V.
机译：为了提高水喷雾添加剂对湿煤粉尘的能力，研究了几种非离子和阴离子表面活性剂的复合润湿特性，测量了表面张力，接触角和煤粉的沉降时间。结果表明，十二烷基硫酸钠（SDS）和另外两种阴离子表面活性剂的复合表现出拮抗作用并降低水的润湿性。原发性戊二醇乙氧基化物（JK），乙二醇聚氧乙烯醚（PEG800）和阴离子表面活性剂十二烷基苯磺酸钠（SDBS）的配合实现了质量比为3：1：1的最强的协同效果。此外，用抑制剂处理的原煤和煤的红外光谱表明，粉尘抑制剂治疗后煤尘的亲水性得到改善。最后，从分子和氢键的角度解释了JFC，PEG800和SDB的协同效应机制。 （c）2019年由elestvier b.v发布。

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