氯离子作用下N235对铋的萃取性能  

Extraction performance of bismuth with N235 under Cl^- assisted extraction

作　　者：黄茜琳[1] 李亮星[1] 黄金堤[1] 廖春发[2] 童长仁[2] HUANG Xilin LI Liangxing HUANG Jindi LIAO Chunfa TONG Changren(School of Construct and Resources Engineering, Jiangxi University of Science and Technology, Nanchang 330013, China School o~ Metallurgical and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China)

机构地区：[1]江西理工大学南昌校区建筑与资源工程系,南昌330013 [2]江西理工大学冶金与化学工程学院,江西赣州341000

出　　处：《有色金属科学与工程》2017年第2期19-23,共5页Nonferrous Metals Science and Engineering

基　　金：国家自然科学基金资助项目(51674126);江西省教育厅科学技术研究项目(GJJ150649;GJJ160664)

摘　　要：采用溶剂萃取法脱除铜电解液中的杂质,在水相料液中添加助萃剂Cl^-,研究Cl^-作用下萃取剂N235对铋的萃取性能.考察有机相N235体积分数、水相助萃剂Cl^-浓度、有机相与水相的体积比(相比)、萃取时间、萃取温度等因素对铋萃取率的影响.研究结果表明:有机相N235体积分数、水相助萃剂Cl^-浓度和相比是影响铋萃取率的主要因素;较为适宜萃取铋的条件为:水相硫酸浓度为3.0 mol/L,氯离子浓度为0.1 mol/L,萃取剂N235体积分数为20%,相比为1∶1,萃取时间为5 min.在此实验条件下,铋的一级萃取率达到97.3%(质量分数).Bismuth impurity in copper electrolyte could be efficiently removed by solvent extraction.The performance of extracting bismuth with N235 was investigated by adding assisting extraction agent into aqueous phase.The effects of various factors such as volume fraction of N235,concentration of assisting reagent,volume ratio of organic to aqueous phase（V（O）/V（A））,reaction time and temperature on bismuth extraction ratio were investigated.The results show that volume fraction of N235,concentration of assisting extraction agents and phase ratio are the main factors influencing the bismuth extraction ratio.The optimal extraction condition is as follows：the sulfuric acid concentration is 3.0 mol/L;assisting extraction agent concentration is 0.1 mol/L;vol-ume fraction of extraction N235 in the organic phase is 20 %;the phase ratio is 1 ∶1;and extraction time is 5min.Under the optimized condition,the one-stage extraction efficiency of bismuth is 97.3 %.

关 键 词：铜电解液 溶剂萃取 N235 氯离子 铋 

分 类 号：TF111.3[冶金工程—冶金物理化学] TF803.27