铁镁复掺对C_2S晶型转变的影响  

Effect of Fe,Mg Doping on Polymorphic Transition of C_2S

作　　者：谢大为[1] 王珏[1] 董元篪[1] 高卫[1] 李阳[1] 

机构地区：[1]安徽工业大学冶金工程学院,马鞍山243002

出　　处：《硅酸盐通报》2015年第12期3712-3716,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金项目(51374006;51204005);安徽工业大学研究生创新基金(2014143)

摘　　要：本文通过X射线衍射全谱拟合分析及Factsage热力学计算,研究了铁镁复合掺杂对β-C_2S向γ-C_2S晶型转变的影响。实验结果表明:单独掺入10%的Fe_2O_3或MgO,均不能有效抑制γ-C_2S的生成;而当复合掺入4%的Fe_2O_3和6%的MgO时,β-C2S向γ-C_2S的转变率仅为5.3%,铁镁复掺能有效稳定β-C_2S相。实验结果为转炉钢渣在水泥生产中的进一步应用提供了基础。The influence of mix-doping Fe and Mg on polymorphic transition of β-C_2S to γ-C_2S was investigated by means of X-ray diffraction（ XRD） Rietveld refinement and Factsage software. The results showed that only 10%（ in mass） Fe_2O_3 or MgO could not effectively inhibit the generation of γ-C_2S,while with mix-doping of 4% Fe_2O_3 and 6% MgO,the transition rate of β-C_2S to γ-C_2S could drop to 5. 3%.Mix-doping of Fe_2O_3 and Mg O can effectively inhibit transition of β-C_2S to γ-C_2S. The results may provide a basis for further application of converter steel slag to cement production.

关 键 词：硅酸二钙 晶型转变 全谱拟合 Factsage 

分 类 号：TQ172[化学工程—水泥工业]