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.
作者
马娜
陈丽杰
瞿金为
张洋
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)
出处
《有色金属（冶炼部分）》
CAS
北大核心
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)
关键词
四氯化钛
尾渣
碱浸
分离
结晶
正钒酸钠
titanium tetrachloride
tailings
alkali leaching
separation
crystallization
sodium vanadate
