Effect of CuO on the Burnability and Mineral Formation of High C_3S Cement Clinker  

作　　者：陈胡星 马先伟 

机构地区：[1]Material Science and Engineering College, Zhejiang University [2]Laboratory of Concrete Material Research, Tongji University [3]Henan Universities of Urban Construction

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2010年第5期838-844,共7页武汉理工大学学报（材料科学英文版）

基　　金：Funded by Chinese 973 National Key Scientific Projects (Nos.2009CB623102 and 2009Cb623104)

摘　　要：The effect of CuO on the clinkering process and mineral structure, components and morphology of high C3S cement clinker was studied. One reference mixture was prepared according to the potential mineral phase components C3S=75%, C3A=7%, C4AF=18% and then was mixed, respectively, with 0.5%, 1%, 1.5%, 2%, 2.5% and 4% CuO. All samples were heated at a rate of 10°C/min to the design temperatures and then maintained for 40 min. Analyses by the glycerol-ethanol method, XRD and SEM-EDS show that the minimum of free lime （f-CaO） content was related to temperature and CuO amount. The higher the temperature, the lower the amount of CuO corresponding to the f-CaO minimum content. CuO promotes the formation and growth of C3S and C4AF and a new compound is found. In addition, these phenomena are discussed theoretically. In conclusion, CuO alters the burnability and the formation and structure of C3S in a high C3S cement system.The effect of CuO on the clinkering process and mineral structure, components and morphology of high C3S cement clinker was studied. One reference mixture was prepared according to the potential mineral phase components C3S=75%, C3A=7%, C4AF=18% and then was mixed, respectively, with 0.5%, 1%, 1.5%, 2%, 2.5% and 4% CuO. All samples were heated at a rate of 10°C/min to the design temperatures and then maintained for 40 min. Analyses by the glycerol-ethanol method, XRD and SEM-EDS show that the minimum of free lime （f-CaO） content was related to temperature and CuO amount. The higher the temperature, the lower the amount of CuO corresponding to the f-CaO minimum content. CuO promotes the formation and growth of C3S and C4AF and a new compound is found. In addition, these phenomena are discussed theoretically. In conclusion, CuO alters the burnability and the formation and structure of C3S in a high C3S cement system.

关 键 词：CUO tricalcium silicate BURNABILITY cement clinker mineral formation 

分 类 号：TQ172.4[化学工程—水泥工业]