无机盐对化学抑尘剂在煤尘表面润湿性能的影响

The Improvement of Addition of Inorganic Salt on the Wettability of Coal Dust by Chemical Dust Suppressant

摘要: 选用了四种不同种类的抑尘剂产品，研究了两种无机盐NaCl和Na₂SO₄对抑尘剂在煤尘表面润湿性能的影响。结果表明，无机盐的加入提高了抑尘剂对煤尘的润湿性能；无机盐的阴离子价态越低，抑尘剂在煤尘表面的润湿性能提升越明显；随着无机盐含量的增加，抑尘剂对煤尘的润湿能力呈现出先增加后降低的趋势；NaCl对不同类型抑尘剂的润湿性提高程度不同，抑尘剂中阴离子表面活性剂含量越高，NaCl对抑尘剂的润湿能力提升越明显，其润湿性能最高提升3.8倍左右。

Abstract: Four different types of dust suppressant products were selected to study the process of addition of inorganic salt on the wettability of coal dust by chemical dust suppressant. The results showed that the addition of inorganic salts improved the wetting properties of dust suppressants on coal dust. The lower the anion valence state of the inorganic salt, the better the wettability of the dust suppressant on the surface of the coal dust. As the content of inorganic salts increased, the wetting ability of the dust suppressant on coal dust increased and then decreased. Different types of dust suppressants had different sensitivities to NaCl. The higher the anionic surfactant component of the dust suppressant, the stronger the wetting ability on the surface of the coal dust by adding an inorganic salt to the dust suppressant. By adding NaCl, the wetting performance of the dust sup-pressant on the surface of the coal dust can be increased up to 3.8 times.