摘要
以石灰石、叶腊石和CaCl2 为主要原料 ,制得了一种新型白水泥。利用XRD ,SEM -EDS等 ,研究了该水泥的适宜烧成温度范围和熟料的显微形貌。研究结果表明 :该白水泥适宜煅烧温度范围为 12 0 0～ 13 5 0℃ ,形成的主要矿物为阿利尼特和少量C1 1 A7·CaCl2 ,随着温度的升高 ,C1 1 A7·CaCl2 逐渐减少 ,在 14 0 0℃ ,阿利尼特开始分解 ,形成了少量的C3S ;在 13 5 0℃下烧成熟料中 ,阿利尼特矿物质为不规则的多面体 ,表面带有平行晶纹 ;熟料为含有大量孔的烧结体 ,烧结体呈三维网络状结构。
A new type of white cement was prepared using limestone, pyrophyllite and CaCl2 as main raw materials. The suitable burning temperature and the micro-morphology of the cement were studied by XRD, SEM-EDS, etc.. The results show that the optimum burning temperature of the cement is in the range of 1200-1350°C and the composition of cement mineral is alinite with few C11A7·CaCl2. The content of C11A7·CaCl2 reduced gradually with the increase of burning temperature. Alinite decomposes to form alite (C3S) at the temperature of 1400°C. The micro-morphology of the cement sample burned at 1350°C is a sinter with high porosity in tri-dimensional network construction, while alinite appears as an irregular polyhedron with twin crystal line on the surface.
出处
《硅酸盐学报》
EI
CAS
CSCD
北大核心
2003年第5期508-512,共5页
Journal of The Chinese Ceramic Society
