结晶氯化铝的热解性能  

Pyrolysis Properties of Crystallization Aluminium Chloride

作　　者：赵爱春[1] 张廷安[1] 吕国志[1] 刘燕[1] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110819

出　　处：《东北大学学报（自然科学版）》2014年第1期75-78,共4页Journal of Northeastern University(Natural Science)

基　　金：国家自然科学基金资助项目(U1202274;50934005;50974035;51204040;51074047;51004033);"十一五"国家科技支撑计划项目(2008BAB34B01);中央高校基本科研业务费专项资金资助项目(N100302005);国家高技术研究发展计划项目(2012AA062303)

摘　　要：利用化学成分分析及XRD技术对一种新的酸法生产氧化铝方法(双循环法)中关键技术——氯化铝热解制备氧化铝的性能进行了研究.主要考察温度及时间对静态与有水蒸气气氛两种热解条件结晶氯化铝热解性能影响规律并进行对比.结果表明:水蒸气气氛中结晶氯化铝的热解速率明显高于晶体直接热解.水蒸气气氛中适宜的热解条件为热解温度800℃,热解时间30 min,产物中氯的质量分数可降至0.14%.而静态热解最优条件为热解温度900℃,热解时间60 min,此时氯的质量分数为0.25%.Performances of alumina prepared by pyrolysis aluminium chloride which was a key technology in a new acid process （the double-cycle method） were studied by the chemical analysis and X-ray diffraction （XRD）. The pyrolysis properties of crystalline aluminium chloride at the static atmosphere and water vapor status with different temperatures and time were mainly investigated. By comparison, the results showed that the decomposition rate in water vapor was significantly higher than that of the direct decomposition one without water vapor. Chlorine mass fraction in the product could be reduced to0. 14% with the optimal conditions for the pyrolysis in water vapor of a pyrolysis temperature of 800 ℃ and a pyrolysis time of 30 minutes, while for that in the static atmosphere, the chlorine mass fraction of 0. 25% was obtained at a pyrolysis temperature of 900 ℃for holding a pyrolysis time of 60 minutes.

关 键 词：氯化铝 热解 物相分析 氧化铝 化学成分分析 

分 类 号：TF821[冶金工程—有色金属冶金]