硅酸盐学报2017，Vol.45Issue(5)：614-622,9.DOI:10.14062/j.issn.0454-5648.2017.05.03
含锰中间相矿物形成及其固溶分布
Formation Process of Interstitials Containing Manganese and Its Solidification
摘要
Abstract
Incorporation and lattice substitution mechanism of manganese (Mn) ions in the intermediate phase of clinker by constructing structure model of clinker mineral based on the first principle were investigated by X-ray diffraction,clinker phase extraction,environmental scanning electron microscopy and other testing methods.The results show that the sequence of solid solution tendency of manganese in cement clinker minerals from high to low is C4AF,C3A,C3S,C2S,and the manganese in the C4AF occupies octahedrally coordinated iron position,which decreases Al/Fe ratio of C4AF.During the sintering process of clinker,there is an isomorphism in manganese that is dissolved in C4AF in the form of +3 value,and the solid solution of C4AF-C4AM is formed,which shifts the diffraction peak of C4AF to the lower angle,reduces the number of C4AF diffraction peaks,decreases the hydration reaction activity.Manganese mainly incorporates in AFt/AFm among cement hydration products,and substitutes the octahedrally coordinated aluminum of the crystal structure.关键词
二氧化锰/水泥熟料/铁酸盐/中间相/第一性原理Key words
manganese dioxide/cement clinker/ferrite/interstitials/first-principles分类
化学化工引用本文复制引用
夏中升,王茂国,王发洲,商得辰..含锰中间相矿物形成及其固溶分布[J].硅酸盐学报,2017,45(5):614-622,9.基金项目
国家科技支撑计划资助项目(2012BAC15B04). （2012BAC15B04）
