组成对花岗岩尾矿微晶玻璃结构及性能的影响  

Influences of Composition on the Microstructure and Properties of Granite Tailings Glass-ceramics

作　　者：汤李缨[1] 季守林[1] 向光 

机构地区：[1]武汉理工大学硅酸盐建筑材料国家重点实验室,武汉430070 [2]广东凯盛光伏技术研究院有限公司,佛山528000

出　　处：《武汉理工大学学报》2013年第5期18-22,共5页Journal of Wuhan University of Technology

基　　金：湖北省教育厅产学研重大专项(CXY2009A017)

摘　　要：以一种花岗岩尾矿为主要原料,采用烧结法研制大掺量花岗岩尾矿微晶玻璃。通过基础玻璃的示差扫描量热法(DSC)曲线,确定样品的玻璃转变温度Tg、初始晶化温度Tx和晶化峰值温度Tp。借助X射线衍射分析(XRD)和扫描电子显微镜(SEM),对晶化试样的物相进行测定和微观结构分析。探讨了花岗岩尾矿掺入量及组成变化对样品烧结、晶化及外观的影响。结果表明:当花岗岩尾矿掺入量为质量分数40%,可制得主晶相为β-硅灰石的花岗岩尾矿微晶玻璃,其晶体形貌为柱状且分布均匀,析晶温度范围为1 080～1 160℃;而随着花岗岩尾矿掺入量质量分数的增加(40%～70%),析晶下限温度提高,析晶温度范围变窄,析出的主晶相仍为β-硅灰石,但晶相含量逐渐降低。The high granite tailings glass ceramic was prepared through sintering,with a kind of granite tailing as main raw material.The glass transition temperature（Tg）,initial crystallization temperature（Tx） and max-crystallization temperature（Tp） of the sample were determined through the differential scanning calorimetry（DSC） curve of basic glass.The phase of the crystallized sample was measured through X-ray diffraction（XRD）,and its microstructure was analyzed with scanning electron microscope（SEM）.The influences of the amount of granite tailing and the changes of its composition on the sintering,crystallization and appearance of the sample was explored.The result indicated that the crystallization temperature ranged between 1 080 ℃ and 1 160 ℃,the main crystalline phase of the granite tailings glass ceramic was β-wollastonite,the compact crystalline distributed uniformly with columnar grains when the amount of granite tailing was 40%.With the increase of the amount of granite tailing（from 40% to 70%）,the lowest crystallization temperature had risen and the range of crystallization temperature was narrowed down.The main crystalline phase was still β-wollastonite,but its content got lower.

关 键 词：微晶玻璃 花岗岩尾矿 显微结构 析晶 

分 类 号：TQ171[化学工程—玻璃工业]