Miao Qingdong, Li Kaihua, Chen Aixiang. Effect of Dissolved Cl2 in Crude TiCl4 on Vanadium Removal by Aluminum Powder[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 14-18,31. doi: 10.7513/j.issn.1004-7638.2018.02.002
Citation:
Miao Qingdong, Li Kaihua, Chen Aixiang. Effect of Dissolved Cl2 in Crude TiCl4 on Vanadium Removal by Aluminum Powder[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 14-18,31. doi: 10.7513/j.issn.1004-7638.2018.02.002
Miao Qingdong, Li Kaihua, Chen Aixiang. Effect of Dissolved Cl2 in Crude TiCl4 on Vanadium Removal by Aluminum Powder[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 14-18,31. doi: 10.7513/j.issn.1004-7638.2018.02.002
Citation:
Miao Qingdong, Li Kaihua, Chen Aixiang. Effect of Dissolved Cl2 in Crude TiCl4 on Vanadium Removal by Aluminum Powder[J]. IRON STEEL VANADIUM TITANIUM, 2018, 39(2): 14-18,31. doi: 10.7513/j.issn.1004-7638.2018.02.002
1. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua 617000, Sichuan, China;
2. Pangang Group Titanium Sponge Filiale, Panzhihua 617000, Sichuan, China
The effect of dissolved chlorine(Cl2) in crude titanium tetrachloride(TiCl4) on the product quality and vanadium removal process by aluminum powder was studied using the industrial devices of a titanium sponge plant as test platform.The results show that the content of dissolved Cl2 in crude TiCl4 has an important influence on the product quality and vanadium removal process. With the dissolved Cl2 increased both the consumption of titanium trichloride(TiCl3) slurry and pressure of the tower top increase.In addition,the content of vanadium oxytrichloride(VOCl3) in product also increases(during the industrial production process,dissolved Cl2 in TiCl4 should be less than 0.15%).Thus,the excess coefficient of Cl2 for industrial chlorination process should be controlled to decrease the dissolved Cl2 content of crude TiCl4.For the crude TiCl4 with high content of Cl2,pre-distillation operation should be adopted to reduce the Cl2 content to 0.15% or less,and then the vanadium removal can be operated.