褐煤提质改性对水煤浆特性的影响  

Lignite Upgrading Modification Affected to Features of Coal Water Mixture

作　　者：高志芳[1,2] 朱书全[2] 吴晓华[3] 

机构地区：[1]安徽工业大学安徽省冶金工程与资源综合利用重点实验室,安徽马鞍山243002 [2]中国矿业大学(北京)化学与环境学院,北京100083 [3]中国科学院科技政策与管理科学研究所,北京100190

出　　处：《煤炭科学技术》2010年第9期112-116,共5页Coal Science and Technology

摘　　要：根据影响水煤浆特性的因素及褐煤提质改性后的煤质特性,选取内蒙古宝日希勒褐煤和相应提质改性后煤样作为研究对象,应用激光粒度测试仪定量分析了煤样的粒度分布,采用扫描电镜(SEM)定性分析了煤样颗粒形态的变化,结合煤样的制浆结果,研究了褐煤提质改性后对粒度分布的影响,分析了堆积效率与颗粒球形度的关系以及堆积效率对提质褐煤成浆性的影响。结果表明:褐煤经提质改性后,堆积效率由65.52%提高到67.88%,水煤浆浆体质量分数相应提高了9.22%,且水煤浆的流变性和稳定性均得到明显改善。According to the factors affected to the coal water mixture features and the coal quality features after the lignite upgrading modified,taking the lignite from Baorixile of Inner Mongolia and the related coal samples after upgrading modified as the research objects,a laser particle measuring instrument was applied to the quantitative analysis on the particle distribution of the coal samples.The Scanning Electric Microscope（SEM） was applied to the qualitative analysis on the variation of the sample particle patterns.In combination with the mixture preparation results of the samples,the lignite upgrading modified affected to the particle distribution was researched,the relationship between the stockpiling efficiency and the particle sphericity was analyzed and the stockpiling efficiency affected to the upgraded lignite mixture was researched.The results showed that lignite after the upgrading modification,the stockpiling efficiency could be improved from 65.52% to 67.88%,the quality fraction of the coal water mixture would be relatively improved by 9.22% and the rheology and stability of the coal water mixture could be obviously improved.

关 键 词：褐煤 提质改性 水煤浆 成浆特性 粒度级配 堆积效率 

分 类 号：TQ53[化学工程—煤化学工程]