激光散射法测定大方无烟煤粒度的测试条件的选择  

Selection of the test conditions for the particle size determination of Dafang anthracite by laser scattering method

作　　者：于江 程智海 翟永强 刘汇泉 秦欢 YU Jiang;CHENG Zhihai;ZHAI Yongqiang;LIU Huiquan;QIN Huan(School of Energy and Mechanical Engineering,Shanghai University of Electric Power,Shanghai 200090,China)

机构地区：[1]上海电力学院能源与机械工程学院,上海200090

出　　处：《能源研究与信息》2020年第1期57-61,共5页Energy Research and Information

基　　金：国家科技支撑计划资助项目(2015BAA04B03)。

摘　　要：利用激光粒度分布仪对大方无烟煤进行了测试,目的是为了选取测量过程中最佳测试条件。结果发现测试条件对试验结果的影响较大,特别是分散剂、超声时间、搅拌池泵转速对测试结果的影响尤为显著。最终确定了激光粒度分布仪测试样品的合理测试条件,即分散剂为无水乙醇,无烟煤折射率为1.66,吸收率为0.46,在搅拌池中的超声时间为180 s,搅拌池泵转速为1600 r·min^-1。另外,取样方法中,试管法和四分法均具有良好的代表性。The particle size of anthracite was tested by the laser particle size analyzer to determine the optimum test conditions during the tests.It was found that the test conditions had a great influence on the experimental results.Especially the effects of the dispersant,ultrasonic time,and pump speed on the results was significant.Finally,the reasonable measurement conditions were determined by the laser particle size analyzer with the dispersant of anhydrous ethanol,the anthracite refractive index of 1.66,the absorption rate of 0.46,the ultrasonic time in the mixing tank of 180 s,and the stirring speed of 1600 r·min^-1.In addition,both the test tube method and quartile method were representative sampling methods.

关 键 词：无烟煤 激光粒度仪 测试条件 

分 类 号：TQ531[化学工程—煤化学工程]