影响煤成浆性的机理因素分析与研究

Study on Mechanical Concern of Slurryability of Coal

在现有煤成浆性影响因素分析的基础上,提出了孔隙率和表面特性是影响煤成浆性的实质上的机理因素,并以蒙东褐煤为研究对象,进行了试验验证,结果表明:经105℃空气氛围干燥3h后,干燥煤的成浆性变差,其主要原因是干燥过程导致的煤比孔容和比表面的提高;与之相对的,干燥煤接触角变大,说明单纯采用接触角测量数据推断煤成浆性是不严谨的。

Based on the existing results on influencing factors of coal slurryability, the paper proposed that, porosity and surface characteristics are the mechanical concern of slurryability of coal, and the conclusion was verified through experiments with lignite from East Inner Mongolia, the results show that, the coal sluiTyability worsens after drying in 105~C atmosphere for 3 hours, as the specific pore volume and the specific surface area of the coal develops during the drying process ; while, the contact angle increases, indicating that, it is not rigorous only using the measurement data of the contact angle to judge the coal slurryability.