Extraction of aluminum from alumina by disproportionation process of AlCl in vacuum

作     者：冯月斌 郁青春 杨斌 戴永年 Yue-bin FENG;Qing-chun YU;Bin YANG;Yong-nian DAI

作者机构：昆明理工大学理学院昆明650500 昆明理工大学冶金与能源工程学院真空冶金国家工程实验室昆明650093 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2013年第23卷第9期

页      面：2781-2785页

核心收录：

学科分类：080603[工学-有色金属冶金] 08[工学] 0806[工学-冶金工程] 

基　　金：Project(51264023)supported by the National Natural Science Foundation of China Project(KKSY201207016)supported by Yunnan Provincial Science and Technology Department,China 

主　　题：aluminum AlCl alumina extraction vacuum disproportionation 

摘      要：The extraction conditions of aluminum by the disproportionation process of A1C1 in vacuum were investigated using alumina and graphite as raw materials, including reaction temperature, pre-reaction and condenser structure. The results show that the extent of the reaction between alumina and carbon increases with increasing reaction temperature at 1643-1843 K; however, the extraction rate of aluminum increases firstly, and reaches the highest at 1743 K, and then decreases with rise in reaction temperature. The pre-reaction of alumina and carbon increases the extraction rate of aluminum. The impurities C, AlaC3 and A1203 in the aluminum product are reduced with reducing the contact surface of the aluminum with CO and with decreasing the condensation temperature, depending on the structure of the condenser.