四氯化钛精致尾渣的综合利用研究  

Study on Comprehensive Utilization of Titanium Tetrachloride Refined Tailings

作　　者：马娜 陈丽杰[2] 瞿金为[3] 张洋[3] MA Na CHEN Li-jie QU Jin-wei ZHANG Yang(Henan Jinkai Chemical Investment Holding Group Co. , Ltd, Kaifeng 475000, Henan, China School of Metallurgical and Chemical Engineering, Jiangxi University of Science ＆ Technology, Ganzhou 341000, Jiangxi, China Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China)

机构地区：[1]河南晋开化工投资控股集团有限责任公司,河南开封475000 [2]江西理工大学冶金与化学工程学院,江西赣州341000 [3]中国科学院过程工程研究所,北京100190

出　　处：《有色金属（冶炼部分）》2017年第7期62-66,71,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金青年科学基金资助项目(21206178)

摘　　要：对攀钢钛业公司生成的四氯化钛精致尾渣进行碱浸,考察了浸出介质、反应温度、碱浓度、液固比、氧压和反应时间对钒浸出率的影响。在合适的工艺条件下,钒浸出率达95%以上。浸出液先沉淀铝,再分步结晶分离氯和钒。浸出液先蒸发结晶生成氯化钠,再冷却结晶制备出纯度89%以上的正钒酸钠。实现了铝、钠、氯和钒的高效分离与高附加值产品的转化,解决了四氯化钛精制尾渣堆放时的有价资源流失和环境污染问题。Titanium tetrachloride refined tailings produced by Panzhihua Iron and Steel Company was leached with alkali. Effects of leaching medium, reaction temperature, alkali concentration, L/S, oxygen pressure, and reaction time on vanadium leaching rate were investigated. The results show that vanadium leaching rate is 95~ above under optimum conditions. Lixivium firstly precipitated aluminum, and then chlorine and vanadium were separated by fractional crystallization. Leachate is evaporated to crystallize sodium chloride and then cooled to crystallize sodium vanadate product with purity of 89% above. Technical route of efficient separation of aluminum, sodium, chlorine, and vanadium, and conversion of high value-added products are realized. Valuable resource loss and environmental pollution existing in stacking of titanium tetrachloride refined railings are addressed.

关 键 词：四氯化钛 尾渣 碱浸 分离 结晶 正钒酸钠 

分 类 号：X758[环境科学与工程—环境工程]