硫酸体系中Cyanex272的萃镓性能研究  

Study on Extraction Performance of Gallium by Cyanex272 in Sulfuric Acid Medium

作　　者：丘丽莉 张魁芳 刘志强 王瑞祥[1] 陈金清[1] 钟晓聪 袁祥奕 QIU Li-li;ZHANG Kui-fang;LIU Zhi-qiang;WANG Rui-xiang;CHEN Jin-qing;ZHONG Xiao-cong;YUAN Xiang-yi(Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Institute of Rare Metals,Guangdong Academy of Sciences,State Key Laboratory for Separation and Comprehensive Utilization of Rare Metals,Guangdong Province Key Laboratory of Rare Earth Development and Application,Guangzhou 510650,China)

机构地区：[1]江西理工大学材料冶金化学学部,江西赣州341000 [2]广东省科学院稀有金属研究所,稀有金属分离与综合利用国家重点实验室,广东省稀土开发及应用重点实验室,广州510650

出　　处：《有色金属（冶炼部分）》2021年第5期86-91,共6页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家自然科学基金资助项目(51704081);广东省自然科学基金资助项目(2019A1515012173);梅州市科技计划项目(2019A0102003);广东省科学院科技项目(2018GDASCX-0110)。

摘　　要：开展了硫酸体系中Cyanex272的萃镓性能研究,详细考察了萃取与反萃过程条件参数对镓萃取与反萃的影响,绘制了萃取与反萃等温线,并模拟了多级逆流试验。结果表明,含290 mg/L Ga3+,pH=2.0的硫酸镓溶液,采用有机相体积分数为15%Cyanex272+85%磺化煤油,控制O/A=1∶4,萃取温度25℃,萃取时间10min,经4级逆流萃取,镓萃取率为99.50%;负载镓有机相,用100g/L H2SO4溶液反萃,控制O/A=10∶1,反萃温度25℃,反萃时间10min,经4级逆流反萃,镓反萃率为98.11%,镓富集于反萃液中,富集倍数近40倍。经中和沉淀、焙烧后,可得到氧化镓产品。Extraction performance of gallium by Cyanex272 in sulfuric acid medium was tested.Effects of parameters on extraction and stripping of gallium were investigated.Isotherms of extraction and stripping of gallium were plotted,and counter current tests were simulated.The results show that with sulfuric acid solution of 290 mg/L Ga3+and pH=2.0 as feed liquor,15%Cyanex272+85%sulfonated kerosene(volume fraction)as extractant solution,gallium extraction rate is 99.50%in four-stage counter current extraction with O/A of 1∶4 under 25℃for 10 min.Gallium in loaded organic can be stripped with 100 g/L H2SO4 solution and stripping rate is 98.11%in four-stage counter current stripping with O/A of 10∶1 under 25℃for 10 min.After extraction and striping,gallium is enriched into stripped solution about by 40 times,in which gallium is easily recovered as Ga2O3 product by neutralization precipitating and roasting.

关 键 词：CYANEX272 镓 硫酸体系 萃取 反萃 

分 类 号：TF843.1[冶金工程—有色金属冶金]