高镁硅酸盐水泥熟料矿物形成及性能研究  

Mineral Formation and Performance Research of the High Magnesia Portland Cement Clinker

作　　者：嵇鹰[1,2] 周静[1] 杨康[1,2] 徐德龙[1,2] 李霞[1] 陈冠君[1] 

机构地区：[1]西安建筑科技大学材料与矿资学院,西安710055 [2]西部建筑科技国家重点实验室,西安710055

出　　处：《硅酸盐通报》2014年第10期2445-2450,共6页Bulletin of the Chinese Ceramic Society

基　　金：国家"973计划"资助项目(2012CB723302);陕西省科技统筹创新工程计划(2012KTZB03-04-01);陕西省重点学科建设专项资金资助项目

摘　　要：随着优质石灰石资源的消耗,我国的资源危机日益严重。众多水泥厂开始使用高镁原料作为原料。本文选取甘肃三易高固气比系统水泥熟料生产线(A线)和陕西韩城韩禹普通新型干法水泥熟料生产线(B线)的高镁熟料进行实验(XRD分析、TG-DTG分析、BSE+EDS分析),同时对实际生产的熟料进行岩相显微结构分析。结果表明:A线熟料的C3S(硅酸三钙)矿物含量均高于B线熟料,A线熟料的28 d抗压强度均高于B线熟料,A线熟料中方镁石的含量均低于B线熟料。根据岩相结构照片可以看出A线熟料的结构优于B线熟料。说明高固气比系统水泥熟料生产线使用高镁原料作为原料,煅烧出质量良好的熟料是切实可行的。Cement factories in China face growing shortage of high-quality limestone,and are shifting,to use high magnesia-limestone as raw materials. In this paper,various analyses（ i. e. XRD analysis,TGDTG analysis,BSE ＋ EDS analysis and petrographic analysis） were carried out to investigate the properties of clinkers as produced with such magnesia-limestone in two cement plants Northwest,China.The two plants are clinker production lines（ denoted as A-line） with a high solid-gas ratio system in Gansu-Sanyi,and a clinker production line（ B-line） with a normal solid-gas handling system in HanYu.Both plants use high magnesia-limestone as raw materials to produce cement clinkers. It was found that the C3 S mineral content and 28 d compressive strength of clinker as produced in A line were higher than those as produced in B-line,whereas,periclase content was lower in clinker as produced in A-line than in B-line. The petrographic microscopic photographs also showed that quality of clinker was better as produced in A-line than that in B-line. Results as measured proved that a clinker production line with a high solid-gas ratio system as in A-line could be used to produce good quality clinker even with high magnesium limestone as raw materials,and superior to a normal clinker production line as in B-line.

关 键 词：高镁石灰石 熟料性能 岩相 抗压强度 高固气比系统 

分 类 号：TQ172[化学工程—水泥工业]