硫铁铝酸钡钙系列矿物  

Ba-BEARING CALCIUM SULFO-FERRITEALUMINATE SERIES MINERALS

作　　者：常钧[1] 李宁[1] 王传平[1] 叶正茂[1] 芦令超[1] 程新[1] 

机构地区：[1]济南大学材料科学与工程学院,济南250022

出　　处：《硅酸盐学报》2005年第8期1032-1035,共4页Journal of The Chinese Ceramic Society

基　　金："973"计划(2001CB610701);"863"计划(2003AA332050);国家自然科学基金(50272024);山东省自然科学基金(Q2002F03)资助项目。

摘　　要：以含钡硫铝酸盐水泥的主要矿物C2.75B1.25A3(?)(1.75CaO·1.25BaO·3Al2O3·CaSO4)为基础,用分析纯化学试剂Fe2O3中的Fe离子对C2.75B1.25A3(?)中的Al离子进行取代,合成了一种新的水泥矿物——硫铁铝酸钡钙系列矿物。通过差热-热重分析研究其最佳烧成。利用X射线衍射仪和扫描电镜对熟料矿物组成及结构进行分析。结果表明:硫铁铝酸钡钙矿物的晶粒尺寸在2μm左右。Fe的摩尔组成可在0-1.25之间,最佳取代值为0.25,此时水泥的1,3d强度均提高。28d强度达到90.0MPa。Based on C2.75B1.25A3S（1.75CAO·1.25BaO·3AlO3·CaSO4）, which is the main mineral in Ba-bearing sulfoalumihate cement, the Ba-bearing calcium sulfo ferritealuminate series of new cement minerals were synthesized by a different equivalent of Fe^3＋ replacing the Al^3＋ in C2.75B1.25A3S. By means of differential thermal analysis/thermal gravimetric, the optimum burning temperature was investigated. The composition and structure of the clinker minerals were studied by means of X-ray diffraction analysis and scanning electron microscopy. The results show that the size of the new mineral crystal formed after ferric ions replacement is about 2 μm in diameter and the molar value of Fe^3＋ in composition ranges from 0 to 1.25. The optimum value of replacement is 0. 25. At the optimum composition, the strength increases obviously after 1 to 3 days. The strength after 28 days can reach 90.0 MPa.

关 键 词：含钡硫铁铝酸钙 含钡硫铝酸盐水泥 氧化铁 强度 

分 类 号：TQ172[化学工程—水泥工业]