低杂铅电解液连续电解制备高纯铅  

Preparation of High Purity Lead by Continuous Electrolysis of Low Impurity Lead Electrolyte

作　　者：唐志波 王文军 TANG Zhibo;WANG Wenjun(Shuikoushan Nonferrous Metals Co.,Ltd.,Hengyang 421534,Hunan,China;State Key Laboratory of Powder Metallurgy,Central South University,Changsha 410083,Hunan,China;Hunan Provincial Key Laboratory of Efficient Power System and Intelligent Manufacturing,Shaoyang University,Shaoyang 422000,Hunan,China)

机构地区：[1]水口山有色金属有限责任公司,湖南衡阳421534 [2]中南大学粉末冶金国家重点实验室,湖南长沙410083 [3]邵阳学院高效动力系统智能制造湖南省重点实验室,湖南邵阳422000

出　　处：《矿冶工程》2024年第4期247-252,共6页Mining and Metallurgical Engineering

摘　　要：以精铅锭、氟硅酸、双氧水、骨胶、β-萘酚为原料制备了低杂铅电解液,开展了连续14周期电解精炼精铅的试验研究。结果表明:铅电解初期电耗52.37 kW·h/t,前2周期可产出6N高纯铅;随着循环电解的进行,电解液中杂质含量和铅离子质量分数逐渐升高,氟硅酸质量浓度逐渐降低,导致析出铅含杂逐渐升高,2周期后析出铅中Cu、Ag、Fe、Al等杂质含量陆续升高,析出铅符合5N但低于6N高纯铅标准。同时,电耗逐渐升高,但各周期电耗均维持在50~70 kW·h/t的较低水平。A kind of low-impurity lead electrolyte was prepared with lead ingots,fluorosilicic acid,hydrogen peroxide,bone glue,andβ-naphthol as raw materials,and then was used in an experimental research on 14 consecutive cycles of electrolysis to produce refined lead.It is shown that the initial power consumption of lead electrolysis was 52.37 kW·h/t,and 6N high-purity lead was produced in the first two cycles;as the cyclic electrolysis process proceeded,the impurity content and lead ion content in the electrolyte gradually increased,while the mass concentration of fluorosilicic acid gradually decreased,resulting in an increase in the impurity content of precipitated lead.Therefore,the content of Cu,Ag,Fe,Al and other impurities in the precipitated lead all gradually increased after two cycles of electrolysis,and the precipitated lead met the standard for 5N but did not meet the standard for 6N high-purity lead.Furthermore,the power consumption also gradually increased,but remained at a low level of 50 kW·h/t to 70 kW·h/t for each cycle.

关 键 词：低杂电解液 循环电解 精炼 杂质 高纯铅 电耗 炼铅 

分 类 号：TF812[冶金工程—有色金属冶金]