煤料堆密度对1/3焦煤黏结性能影响的研究  

EFFECT OF BULK DENSITY OF 1/3 COKING COAL ON PLASTOMETRIC INDICES

作　　者：白金锋[1] 李娜[1] 钟祥云[1] 张雅茹[1] 徐君[1] 奚白[1] 刘洪春 

机构地区：[1]辽宁科技大学化学工程学院,辽宁鞍山教授博士114051 [2]中冶焦耐工程技术有限公司,辽宁鞍山教授级高级工程师114002

出　　处：《煤炭转化》2011年第4期43-45,53,共4页Coal Conversion

基　　金：国家高技术研究发展计划(863)项目(2009AA063302)

摘　　要：研究了典型煤料范各庄1/3焦煤在不同堆密度条件下胶质层指数和最终收缩度及胶质层体积曲线的变化规律.结果表明,范各庄1/3焦煤堆密度从0.8t/m3增加到1.1t/m3时,煤料的胶质层指数Y由17.7mm增加到24.5mm,增加了7.8mm,提高了44.1%;其最终收缩度由25.2mm降到-7.9mm,增加131%,表明煤料结焦后的体积变化为正膨胀性能.在煤料堆密度增加后,其胶质层体积曲线由"之"字型向"之"与"山"混合型及"山"字型转变,表明煤料的表观黏结性能得到明显改善,且在密度较高时由1/3焦煤向肥煤性能靠近.To fundamentally understand the relationship between the bulk density of coking coal and the caking property will be of great help to develop new stamp coking technology.This paper investigated the evolutionary change of the caking property indices of 1/3 coking coal from Fangezhuang under the different conditions including bulk density,max thickness,final contraction value and volume curve of the gel layer and so on.Experimental results exhibited that when the bulk density was improved from 0.8 t/m3 to 1.1 t/m3,the caking properties were enhanced obviously with max thickness increment by 44.1% from 17.7 mm to 24.5 mm and the final contraction value reduced by 131% from 25.2 mm to-7.9 mm.The volume change of coal sample displayed characteristics featuring positive expansion.The microscopic coking properties can be improved greatly by increasing the bulk density of coking coal.The volume curve of gel layer varied from a single zigzag type to e type or a mixture of e type and zigzag type.The macroscopic coking properties of the 1/3 coking coal were approaching to that of fat coal when the bulk density of the test coal sample was improving.

关 键 词：炼焦煤 胶质层指数 最终收缩度 黏结性能 

分 类 号：TQ522.1[化学工程—煤化学工程]