柏兹法电解制备6N高纯铅研究  

Study on the Preparation of 6N High Purity Lead by Betts Electrolysis Method

作　　者：高和欣 王文军[1] 伍秋美[1] 袁铁锤[1] 邹亮[1] 蔺仕琦 GAO Hexin;WANG Wenjun;WU Qiumei;YUAN Tiechui;ZOU Liang;LIN Shiqi(Central South University,Changsha 410000 China)

机构地区：[1]中南大学,湖南长沙410000

出　　处：《湖南有色金属》2023年第6期73-76,104,共5页Hunan Nonferrous Metals

摘　　要：针对1^(#)铅杂质含量较高,难以满足半导体、航空航天、核工业等先进科技领域对高纯铅材的需求,本研究采用1^(#)铅、氟硅酸、过氧化氢、骨胶、β-萘酚和去离子水为试验原料,通过电解液的制备,采用电解法对1#铅进行提纯,以析出铅含杂为主要指标,通过单因素条件试验,研究了骨胶浓度、电流密度、电解液循环速度、同极间距、阳极套袋五个关键条件对析出铅含杂的影响。结果表明:五个关键条件均对析出铅含杂有一定影响,在骨胶浓度0.8 g/L、电流密度120 A/m^(2)、循环速度100 mL/min、同极间距100 mm、阳极套袋较佳条件下获得的析出铅杂质总量低至0.605×10^(-6),铅的纯度达99.9999395%,各杂质含量均符合YS/T 265—2012标准中Pb-06高纯铅杂质要求。In response to the high content of impurities in 1^(#)lead,which makes it difficult to meet the demand for high-purity lead materials in advanced technology fields such as semiconductors,aerospace,and nuclear industry.In this study,1^(#)lead,fluorosilicic acid,hydrogen peroxide,bone glue,β-naphthol,and deionized water were used as experimental materials.Through the preparation of electrolyte,1~#lead was purified by electrolysis,with the impurity content in the precipitated lead as the main indicator.Through single factor conditional experiments,the influence of five key conditions,such as the concentration of bone glue gelatin,current density,electrolyte circulation speed,electrode spacing,and anode bagging,on the impurity content of precipitated lead were studied.The experimental results show that all five key conditions have certain impacts on the precipitation of lead impurities.The total amount of precipitated lead impurities obtained under optimal conditions such as bone glue concentration of 0.8 g/L,current density of 120 A/m^(2),circulation speed of 100 mL/min,homopolar spacing of 100 mm,and anode sleeved bag is as low as 0.605×10^(-6).Not only does the purity of lead reach 99.9993995%,but the impurity content also meets the requirements of Pb-06 high-purity lead impurity in the YS/T 265-2012 standard.

关 键 词：电解法 关键条件 析出铅 杂质含量 高纯铅 

分 类 号：TF114.5[冶金工程—冶金物理化学]