煤系高岭岩水热法合成超细莫来石粉  

The Preparation of Mullite Nanopowder by Hydrothermal Crystallization From Kaolinite in Coal Measures

作　　者：薛茹君[1] 

机构地区：[1]安徽理工大学化工系,安徽淮南232001

出　　处：《中国非金属矿工业导刊》2005年第1期17-19,共3页China Non-Metallic Minerals industry

基　　金：安徽省教育厅自然科学基金项目(2003KJ095)

摘　　要：以煤系高岭岩为原料,采用水热晶化法合成超细莫来石粉。研究了热处理温度、碱浓度、液固比、水热晶化温度和时间等工艺条件对莫来石的得率和粒径的影响。用XRD、IR等分析手段对原料及产品进行了分析,结果表明:在适当的工艺条件下可以获得以莫来石为主晶相的超细莫来石粉。Mullite particles was synthesized by hydrothermal crystallization from kaolinite in coal measures. The effect of the temperature of thermal treatment, NaOH concentration, the ratio of NaOH solution to kaolinite, reaction temperature and time on the productivity of mullite particle and the particle size was studied. X-ray diffraction analysis, IR analysis were conducted on raw material and products. The microstructure and the phase of products were characterized as well. Through the analysis it has been shown that nanopowder with mullite as major phase can be prepared on condition that process parameters were controlled precisely.

关 键 词：莫来石 超细 水热法合成 水热晶化 主晶相 工艺条件 原料 煤系高岭岩 液固比 石粉 

分 类 号：TD973.2[矿业工程—选矿] TQ174[化学工程—陶瓷工业]