Cyanex272从沉钒尾液中萃取提钒的研究  

Extraction of Vanadium in Vanadium-Containing Supernatant from Calcified Roasting Route with Cyanex272

作　　者：杨莉花 郭秋松 王长宏[1] 陈晓东 YANG Li-hua;GUO Qiu-song;WANG Chang-hong;CHEN Xiao-dong(School of Materials and Energy,Guangdong University of Technology,Guangzhou 510006,Guangdong,China;Institute of Rare Metals of Guangdong Academy of Sciences,Guangzhou 510650,Guangdong,China;State Key Laboratory of Rare Metal Separation and Comprehensive Utilization,Guangzhou 510650,Guangdong,China;Industrial Analysis and Testing Center of Guangdong Academy of Sciences,Guangzhou 510650,Guangdong,China)

机构地区：[1]广东工业大学材料与能源学院,广东广州510006 [2]广东省科学院稀有金属研究所,广东广州510650 [3]稀有金属分离与综合利用国家重点实验室,广东广州510650 [4]广东省科学院工业分析检测中心,广东广州510650

出　　处：《矿冶工程》2021年第4期100-103,108,共5页Mining and Metallurgical Engineering

基　　金：广东省科学院创新能力建设项目(2018GDASCX-0110);广州市科技计划项目(201707020030)。

摘　　要：以沉钒尾液为研究对象,采用Cyanex272为萃取剂,分别考察了萃取与反萃取条件对萃取提钒过程的影响。研究结果表明:在初始pH=2.25、萃取剂体系为20%Cyanex272+80%磺化煤油、相比A/O=1∶1、萃取时间5 min条件下进行三级逆流萃取,在反萃剂硫酸浓度0.75 mol/L、相比O/A=4∶1、反萃时间5 min的反萃条件下,经三级逆流反萃后,最终钒回收率可达99.3%,锰、镁、钙去除率分别为98.8%、99.6%和98.7%,实现了沉钒尾液中残留钒的高效回收与尾液中有害金属元素的脱除。The vanadium-containing supernatant from calcified roasting route was taken in the test for vanadium extraction with Cyanex272 as the extractant,and the effects of extraction and reverse extraction conditions on the vanadium extraction process were investigated.In the study,a three-stage countercurrent extraction was performed with an initial pH of 2.25,an extractant system consisting of 20%Cyanex272 and 80%sulfonated kerosene,A/O=1∶1,and the extraction time of 5 min.And then a three-stage countercurrent reverse extraction was performed with sulfuric acid concentration of 0.75 mol/L,O/A=4∶1,and a reverse extraction time of 5 min.The final vanadium recovery rate reached 99.3%,the removal rates of manganese,magnesium and calcium were respectively 98.8%,99.6%and 98.7%.It is shown that the efficient recovery of residual vanadium and the separation of harmful metal elements from the supernatant are actualized.

关 键 词：钒 萃取 CYANEX272 沉钒尾液 反萃取 

分 类 号：TF111[冶金工程—冶金物理化学]