以高铝粉煤灰提铝硅钙尾渣为主要原料，采用烧结法制备了硅灰石微晶玻璃。利用DTA、XRD和SEM分析方法研究了热处理制度、硅钙渣用量对微晶玻璃的晶化过程、显微结构及物化性能的影响。结果表明：核化时间与晶化时间的延长有助于硅灰石晶体的定向生长与紧密排列，对微晶玻璃的力学性能影响显著，而晶化温度与核化温度的影响则相对较小；随着硅钙渣的用量增加，微晶玻璃中硅灰石的析出能力增强，当其用量为70．98％，在800℃下核化热处理90 min，920℃晶化处理90 min时，可制备出单一晶相的硅灰石微晶玻璃。
The silicate-calcium slag generated in process of extracting alumina from high-alumina fly ash was used as the main raw material to prepared wollastonite glass-ceramics by sintering method .The effect of amount of silicate-calcium slag additions and heat treatment conditions on crystallization process , microstructures and properties of the prepared glass-ceramics were studied by differential thermal analysis (DTA), X-ray diffraction (XRD) and scanning electron microscopy (SEM) methods.The results indicate that prolong nucleation time and crystallization time could help to wollastonite crystal orientation grown up and closely arranged , and have a significant influence on mechanical properties of glass-ceramics, while the crystallization temperature and nucleation temperature have relatively small influence .With the amount of silicate-calcium slag increasing , wollastonite precipitation from matrix glass is enhancing and signal crystal phase of wollastonite glass-ceramics were prepared under the conditions of add 70 .98%silicate-calcium slag in raw material on the conditions of heat treating at 800 ℃for 90 min followed by crystallization at 920 ℃for 90 min.
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