CaF_2对硫铝酸钡钙矿物形成过程的影响  

EFFECT OF CaF_2 ON THE FORMATION COURSE OF BARIUM-CALCIUM SULPHOALUMINATE

作　　者：芦令超[1] 于丽波[1] 常钧[1] 程新[1] 刘韩星[2] 袁润章[2] 

机构地区：[1]济南大学材料科学与工程学院,济南250022 [2]武汉理工大学材料复合新技术国家重点实验室,武汉430070

出　　处：《硅酸盐学报》2005年第11期1396-1400,共5页Journal of The Chinese Ceramic Society

基　　金：国家重点基础研究"973"计划(2001CB610701);国家高技术研究发展"863"计划(2003AA332050);山东省自然科学基金(Y2003F02)资助项目

摘　　要：采用X射线衍射、扫描电镜和差热热重分析等测试方法研究了CaF2对硫铝酸钡钙矿物2.75CaO.0.25BaO.3Al2O3.BaSO4(C2.75.B1.25A3S)形成过程的影响,并对高温固相反应过程中出现的物相进行了初步分析。结果表明:CaF2加速了CaCO3的分解,降低了C2.75B1.25A3S的形成温度。当温度低于1 300℃时,CaF2可能促进C2.75B1.25A3S的形成及结晶,并同时伴随着氟铝酸盐矿物11CaO.7Al2O3.CaF2的生成。另外,CaF2对C2.75B1.25A3S的高温分解没有明显的影响。The effects of CaF2 on the formation course of harium calcium sulphoaluminate 2.75CAO · 0. 25BaO· 3Al2O3· BaSO4 （C2.75 B1.25 A3S） were studied by X ray diffraction, scanning electron microscopy and differential thermal analysis- thermal gravimetric analysis. The phase formed in the sintering process at high temperature was analyzed. The results show that CaF2 can accelerate the decomposition of CaCO3 , decrease the temperature of C2.75 B1.25 A3S formation and promote the forma tion or crystal growth of the mineral below 1 300 ℃. The compound 1 1CaO · 7Al2O3· CaF2 was found in the sintering process of C2.75B1.25 A3S. In addition, CaF2 has no remarkable influence on the decomposition temperature of the mineral.

关 键 词：氟化钙 硫铝酸钡钙 矿物 

分 类 号：TQ172.11[化学工程—水泥工业]