煤矸石热活化及相变分析-硅酸盐学报.PDFVIP

· 1258 · 硅 酸 盐 学 报 2007 年 第35 卷第9 期 硅 酸 盐 学 报 Vol. 35 ，No. 9 2 0 0 7 年 9 月 JOURNAL OF THE CHINESE CERAMIC SOCIETY September，2007 煤矸石热活化及相变分析 李永峰，王万绪，杨效益 ( 中国日用化学工业研究院，太原 030001) 摘 要：系统研究了不同温度下热处理活化煤矸石的物相组成和活性组分溶出的变化规律。用差热分析、X 射线衍射、红外光谱、核磁共振、电感耦 29 27 4+ 3+ 合等离子原子发射光谱和扫描电镜等仪器测试分析煤矸石原矿和不同煅烧温度制备的样品的矿物组成、分子结构、 Si 和 Al 化学位移、活性Si 和Al 溶出量及微观结构。结果表明：煤矸石的活化程度随不同温度下矿物相组成及铝配位情况的变化而改变。连续性的相转变与活性硅、铝的溶出量相对应。 关键词：煤矸石；热活化；相变；活性；配位 中图分类号：TQ172 文献标识：A 文章编号：0454–5648(2007)09–1258–06 ANALYSIS OF THERMAL ACTIVATION AND PHASE TRANSFORMATION OF COAL-GANGUE LI Yongfeng ，WANG Wanxu，YANG Xiaoyi (China Research Institute of Daily Chemical Industry, Taiyuan 030001, China) Abstract: The changing rule of mineral composition and dissolution of active ingredients of thermal activated coal-gangue was studied under different temperatures. Such techniques as differential thermal analysis, X-ray diffraction , Fourier transform infrared spec- trometry, inductive coupled plasma-atomic emission spectroscopy, magic angle spin nuclear magnetic resonance , and scanning elec- tron microscope were applied to test and analyze the mineral composition, molecular structure, chemical shifts of 29Si and 27Al, and the amounts of Si4＋ and Al3＋ dissolved out of raw coal-gangue and coal-gangue samples calcined under different temperatures. The results indicate the degree of coal-gangue activation varies with the changing of the phase structure and coordination of aluminum under