Analysis on Moist Performance Measuring Technology of Coal Dust

为了研发煤尘润湿剂以有效降低作业场所的煤尘浓度,通过试验对沉降法、毛细管下向渗透法、毛细管上向渗透法和滴液法等煤尘润湿性能测定方法进行比较,探讨了传统煤尘润湿性能测定方法再现性低、可靠性差的原因;设计制作了lM-3型煤尘加压成型器,通过对煤饼滴液来测定煤尘的润湿性。结果表明:利用煤饼滴液法可以提高煤尘润湿性测定结果的再现性和可靠性,便于煤尘润湿剂复配方案的设计,在此基础上开发出了性能优良的AnlOng系列润湿剂,使试验的煤尘降尘率达到90%。In order to develop coal dust wetting agent to effectively reduce coal dust density in operation sites,with comparisons on the settling method,capillary downward permeation method,capillary upward permeation method,dropping method and coal dust moist performance measuring method,the paper discussed the causes of the re-production low and reliability poor for the conventional coal dust moisture performance measuring method.A LM-3 coal dust pressurized briquetting device was designed and developed.The coal dust moisture was measured with the dropping on the briquette.The results showed that the application of the briquette dropping method could improve re-production and reliability of coal dust moist performance measured results and could be favorable to the design of the material mixing plan for the wetting agent.Based on the circumstances,Anlong series wetting agent were developed with excellent performances.The coal dust control rate of the experiment reached to 90%