粉煤灰与低品位石灰石制备Q相水泥熟料的试验研究  

Experiment study on calcination of Q phase cement clinker by using fly ash and low-grade limestone

作　　者：焦有宙[1] 李慧灵[2] 赵迎芳[1] 张全国[1] 

机构地区：[1]河南农业大学机电工程学院,河南郑州450002 [2]河南教育学院化学系,河南郑州450014

出　　处：《实验技术与管理》2009年第3期53-57,共5页Experimental Technology and Management

基　　金：河南省科技攻关项目(062450010)

摘　　要：以粉煤灰、低品位石灰石、分析纯氧化镁和硅酸盐水泥生料为原料,在实验室YFX 16Q-YC高温箱式电阻炉的不同温度条件下进行Q相水泥熟料和硅酸盐水泥熟料的煅烧制备。对试验获得的Q相水泥熟料样品进行了矿物组成X射衍射（XRD）、扫描电子显微镜（SEM）和能谱（EDS）图谱分析,对试验获得的Q相水泥熟料和硅酸盐水泥熟料进行了游离氧化钙f-CaO质量分数测定比较。结果表明;以粉煤灰和低品位石灰石为主要原料,在1320℃可煅烧出合格的Q相水泥熟料;在1320℃温度条件下,Q相水泥熟料样品和硅酸盐水泥熟料样品的游离氧化钙f-CaO分别为1.29%和5.65%;粉煤灰和低品位石灰石配料制备Q相水泥熟料,较传统硅酸盐水泥熟料的制备,其生料易烧性得到较大改善;粉煤灰和低品位石灰石配料制备Q相水泥熟料,其煅烧温度较传统硅酸盐水泥熟料煅烧温度约降低80-130℃。Coal fly ash,low-grade limestone , analytical pure MgO and raw meal of poland cement clinker were selected as experimental materials. Quaternary phase cement clinker and portland cement clinker were calcinationed on high-temperature box-type resistance furnace under different temperatures at laboratory. Samples of quaternary phase cement clinker were analyzed by X-ray diffraction（XRD）, scanning electron microscope （SEM）, and energy dispersive spectroscopy（EDS）. Free-CaO content of quaternary phase cement clinker and portland cement clinker were measured. The results show that at 1320 ℃ quaternary phase cement clinker could be calcinationed;at 1320 ℃, and free-CaO contents of quaternary phase cement clinker and portland cement clinker were 1.29% and 5.65%, respectively. Compared with calcination of portland cement, burnability of quaternary phase cement clinker was improved greatly; calcination temperature of quaternary phase cement clinker was （80--130）℃ lower than that of portland cement clinker.

关 键 词：粉煤灰 低品位石灰石 Q相水泥熟料 硅酸盐水泥熟料 

分 类 号：TQ172.7[化学工程—水泥工业]