离心萃取分离钒页岩酸浸液中钒铁的研究  

Study on separation of vanadium and iron from black shale acid leaching solution by centrifugal extraction

作　　者：王露瑶 张一敏[1,2,3,4] 薛楠楠 胡鹏程[1,2,3] 陈亚宝 WANG Luyao;ZHANG Yimin;XUE Nannan;HU Pengcheng;CHEN Yabao(School of Resource and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;State Environmental Protection Key Laboratory of Mineral Metallurgical Resources Utilization and Pollution Control,Wuhan 430081,China;Collaborative Innovation Center of Strategic Vanadium Resources Utilization,Wuhan 430081,China;Hubei Provincial Engineering Technology Research Center of High Efficient Cleaning Utilization for Shale Vanadium Resource,)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉摇430081 [2]国家环境保护矿冶资源利用与污染控制重点实验室,湖北武汉摇430081 [3]战略钒资源利用省部共建协同创新中心,湖北武汉摇430081 [4]湖北省页岩钒资源高效清洁利用工程技术研究中心,湖北武汉摇430081

出　　处：《中国有色冶金》2024年第4期41-47,共7页China Nonferrous Metallurgy

基　　金：国家重点研发计划项目(2020YFC1909700);湖北省科技创新人才及服务专项项目(2022EJD002)。

摘　　要：离心萃取法是通过高速转动提高两相间的传质,并利用离心力场来实现两相快速分离的萃取方法。为提高萃取剂对钒(V)的萃取效率,强化V(IV)与Fe(II)的分离效果,本研究将离心萃取法应用于钒页岩酸浸液中钒的净化富集工艺。结果表明,在萃原液初始pH值2.0、有机相组成15 vol.%P204+85 vol.%磺化煤油、相比(O/A)1∶4、萃取时间4 min、萃取温度45℃、转速1 400 r/min的离心萃取条件下,V萃取率为87.67%。与常规萃取相比,离心萃取使V/Fe分离系数由41.78提升至127,钒的萃取饱和容量由52.63 g/L提升至70.45 g/L,表明离心萃取可有效强化钒铁分离效果,并提高钒的萃取饱和容量。Centrifugal extraction method is an extraction method that enhances mass transfer between two phases through high-speed rotation and utilizes centrifugal force field to achieve two phase separation quickly.To improve the vanadium extraction efficiency and the separation factor of vanadium(V)and iron,the centrifugal extraction method was applied to the study of vanadium purification and enrichment process from black shale acid leaching solution.Under centrifugal extraction conditions with an initial pH value of 2.0,organic phase composition of 15 vol.%P204+85 vol.%sulfonated kerosene,phase ratio(O/A)of 1:4,extraction time of 4 min,extraction temperature of 45℃,and stirring speed of 1400 r/min,the V extraction efficiency was 87.67%.Compared with the conventional extraction,the separation factor of V/Fe increased from 41.78 to 127,and the extraction saturation capacity of vanadium increased from 52.63 g/L to 70.45 g/L,indicating that centrifugal extraction method can effectively enhance the separation effect of vanadium and iron,and improve the extraction saturation capacity of vanadium.

关 键 词：钒页岩酸浸液 离心萃取 常规萃取 钒 V/Fe分离 

分 类 号：TF841.3[冶金工程—有色金属冶金]