摘要
本文以钼尾矿为主要原料制备贝利特水泥熟料。并通过强度、X射线衍射、扫描电镜等测试,研究了原料配比和石膏活化剂掺量对水泥熟料性能的影响。实验结果表明:以质量分数为23.3%钼尾矿、3.4%的河砂和73.3%的石灰石为原料,再添加1.5%的石膏作活化剂,在1350℃下煅烧0.5 h制得的贝利特水泥熟料强度最高。钼尾矿的掺加对贝利特水泥熟料主要矿物种类没有影响。加入石膏可促进熟料烧成,且生成了少量硫铝酸钙,使得熟料强度明显增加。
Belite cement clinker was prepared by molybdenum tailings in this paper. Effects of the ratio of raw materials and the doping content of activator gypsum on the properties of cement clinker were analyzed by means of strength test,XRD,SEM and other analytical methods. The results show that belite cement possessing the highest strength when it was calcined at 1350 ℃ for 0. 5 h,the condition of 23. 3wt%molybdenum tailings,3. 4wt% river sand,73. 3wt% limestone as raw material and 1. 5wt% gypsum as activator. The adulteration of molybdenum tailings has no effect on bailey cement clinker mineral species.Adding gypsum can promote the clinker sintering and generate a small amount of calcium sulphoaluminate to make the clinker strength increased significantly.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2015年第7期1839-1843,共5页
Bulletin of the Chinese Ceramic Society
基金
国家自然科学基金(51272068)
关键词
钼尾矿
石膏
贝利特水泥熟料
抗压强度
微观结构
molybdenum tailings
gypsum
belite cement clinker
compressive strength
microstructure
