DOC《熔盐氯化法制备粗TiCl4过程热平衡控制研究》

熔盐氯化法制备粗TiCl4过程热平衡控制研究 李亮1,2,贾要强1,2,朱福兴1,3,邓攀2,李开华1,刘大春2 (1.

攀钢集团研究院有限公司,四川 攀枝花 617000;

2.昆明理工大学 真空冶金国家工程实验室,昆明 650093;

3.成都理工大学 材料与化学化工学院,成都 610059) 摘要:对TiO2品位为74%的高钙镁钛渣物相组成及氯化行为、熔盐氯化生产粗四氯化钛过程的熔盐温度控制进行了分析.结果表明,在粗四氯化钛单炉产量为100 t/d的条件下,通过合理调节返炉矿浆量,可将钛渣氯化过程的熔盐温度与混合炉气温度分别稳定控制在740~770 ℃与350~501 ℃,并产出平均固相含量4.06~4.1 g/L的合格粗TiCl4产品. 关键词:高钙镁钛渣;

加碳氯化;

熔盐;

粗四氯化钛 中图分类号:TF823,TF803 文献标志码:A 文章编号:1007-7545(2019)05-0000-00 Analysis on Thermal Equilibrium of Crude TiCl4 Preparation by Carbochlorination in Molten Salt LI Liang1,2, JIA Yao-qiang1,2, ZHU Fu-xing1,3, DENG Pan2, LI Kai-hua1, LIU Da-chun2 (1. Pangang Group Research Institute Co. Ltd., Panzhihua 617000, Sichuan, China;

2. National Engineering Laboratory for Vacuum Metallurgy, Kunming University of Science and Technology, Kunming 650093, China;

3. College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu 610059, China) Abstract:Phase structural and chlorination behavior of titanium slag bearing high calcium and magnesium with TiO2 grade of 74%, and thermal equilibrium of crude TiCl4 preparation from titanium slag were investigated. The results show that temperature of molten salts and mixed furnace can be controlled at 740~770 ℃ and 350~501 ℃ respectively, through reasonable adjustment of volume of mud return amount when crude titanium tetrachloride output is

100 t/d. Crude TiCl4 with average solid content of 4.06~4.1 g/L is obtained. Key words:titanium slag bearing high calcium and magnesium;

carbochlorination;

molten salt;

crude titanium tetrachloride 我国攀西地区蕴藏着极其丰富的钛资源[1-2],利用攀枝花丰富的钛资源生产优质四氯化钛(TiCl4)作为钛白、海绵钛生产的原料已经成为攀西钛资源高效利用的必然选择[3-5]. 沸腾氯化法与熔盐氯化法[6-7]是目前工业制备TiCl4的主要方法.但沸腾氯化法对钛原料要求相对苛刻[8-9],其中钛渣中TiO2含量需>90%、钙镁氧化物总量