褐煤中矿物质对水泥熟料烧成过程的影响  

Influence of Minerals in Lignite on the Sintering Process of Cement Clinker

作　　者：滕英跃[1] 赵畅[2] 刘全生[1] 宋银敏[1] 智科端[1] 马奇伟 

机构地区：[1]内蒙古工业大学化工学院,内蒙古工业大学催化重点实验室,呼和浩特010051 [2]内蒙古工业大学土木工程学院,呼和浩特010051

出　　处：《硅酸盐通报》2014年第2期236-242,共7页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(21066008,21266017);高等学校博士学科点专项科研基金(20111514110001);内蒙古自然科学基金(2009ZD01);内蒙古科技计划项目(20101502);内蒙古工业大学“煤化工特色学科”;内蒙古工业大学科学研究项目(ZS201014)

摘　　要：以单位熟料热耗及煤样热值为基准,在水泥生料中分别添加褐煤及烟煤,并在1250℃、1350℃、1450℃下煅烧,模拟水泥烧成的部分过程,分析熟料煅烧过程中褐煤中矿物质成分的不同与硅酸盐矿物产生过程差异的内在联系。结果表明,水泥熟料煅烧过程中,煤炭中非钙硅物质带入量是影响液相初始生成的主要原因,但最终熟料的矿物组成由熟料的率值控制,SM和IM较大时,矿物粘结现象和熔蚀现象比较严重;褐煤添加试样符合上述结论,得到了合理的矿物组成,其中提质褐煤由于其热值高,相同条件下带入非钙硅物质最少,1250℃液相生成较差,同时受KH及SM较高影响,最终水泥矿物发育较差。Using unit heat consumption of clinker formation and the calorific value of coal samples as the benchmark, the cement raw meal, with lignite and Bituminous coal being added respectively, were sintered at 1250 ℃ ,1350 ℃ and 1450 ℃ to simulate part of the cement sintering process. And then the internal relation between the differences in mineral constitutes of lignite and the differences in the forming process of silicate minerals was analyzed. The results showed that in the sintering process of cement clinker, the amount of non-calcium-silicon constitutes in the coal was the main factor influencing the initial formation of liquid phase, but the final mineral composition in the clinker was decided by the modulus value of it. When SM and IM were larger, the sticking and melting of the minerals were quite severe. The sample with lignite being added was in accordance with the conclusion above and ended up with a reasonable mineral composition, while the minerals in the sample with the upgraded lignite was not well developed because of the high calorific value of the upgraded lignite, the lowest amount of non- calcium-silicon constitutes being brought into the process, the poor formation of liquid phase, and the great influence coming from KH and SM.

关 键 词：褐煤 矿物质 熟料 煅烧 

分 类 号：TQ172[化学工程—水泥工业]