粗四氯化钛中固相杂质静置沉降分离实验研究  

Experimental research on static settlement and separation of solid impurities in crude titanium tetrachloride

作　　者：李亮[1,2] 刘大春[2] 李开华[1] 陈爱祥 Li Liang Liu Dachun Li Kaihua Chen Aixiang(State Key Laboratory of Vanadium and Titanium Comprehensive Utilization, Pangang Group Research Institute Co., Ltd, Panzhihua 617000, China National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China Pangang Group Titanium Co., Ltd., Panzhihua 617000, China)

机构地区：[1]攀钢集团研究院有限公司,钒钛资源综合利用国家重点实验室,四川攀枝花617000 [2]昆明理工大学真空冶金国家工程实验室,云南昆明650093 [3]攀钢集团钛业有限责任公司,四川攀枝花617000

出　　处：《轻金属》2017年第9期40-43,共4页Light Metals

摘　　要：本文对粗四氯化钛中固相物杂质的来源进行了分析,并对钛渣熔盐氯化过程中关键罐区的粗四氯化钛进行了静置沉降实验研究。结果表明:氯化过程生成的VOCl_3、SiCl_4、AlCl_3、FeCl_3低沸点杂质进入粗TiCl_4中。粗TiCl_4的静置沉降可有效降低高固相物杂质粗四氯化钛中FeCl_3、AlCl_3的含量,且沉降效率随时间的延长有所增加,当沉降时间大于25h后,静置沉降分离基本停止,静置沉降后粗四氯化钛中的FeCl_3含量、AlCl_3含量分别可降至0.0017%、0.0005%。The source of solid phase impurities in crude titanium tetrachloride was analyzed in this paper. Static settling experiments were performed on the crude titanium tetrachloride, which came from the key storage tanks of titanium slag chlorination process in molten salt. The results showed that the low boiling point impurities, such as VOCl3 , SiCl4 , AlCl3 and FeCl3 went into the crude TiCl4. Static settlement can effectively reduce the content of AlCl3 and FeCl3 in the crude TiCl4 and the settlement efficiency increased with the time. But the separation almost stopped when settlement lasted more than 25h. The content of FeCl3 and A1Cl3 in crude titanium tetrachloride can be dropped to 0.0017% and 0.0005% respectively.

关 键 词：熔盐氯化 粗四氯化钛 沉降 分离 

分 类 号：TQ134.11[化学工程—无机化工]