从氯化铅水溶液中电解提取铅  

Lead Electrowinning from Chloride Aqueous Solution

作　　者：尹文新[1] 韩跃新[1] 舒方霞[2] 刘瑶[2] 

机构地区：[1]东北大学,沈阳110004 [2]沈阳有色金属研究院,沈阳110141

出　　处：《有色金属》2007年第1期81-84,90,共5页Nonferrous Metals

基　　金：国家科研院所技术开发研究专项资金项目(国科发财字[2005]300号)

摘　　要：研究氯化铅水溶液电解过程,考察阴极材质、电流密度、温度、Pb2+浓度、盐酸浓度、添加剂等因素对电流效率、槽压和沉积物质量的影响。结果表明,添加骨胶和β-萘酚对沉积物的质量和电流效率并没有太大改善,却导致槽压上升。因此,氯化铅水溶液电解中不必加入添加剂。采用不锈钢和铅阴极电解,在电流密度100A/m2,温度55℃,Pb2+浓度30g/L,盐酸浓度6g/L的条件下,电流效率可达92%,阴极铅较致密平整,可直接用于铸锭。Electrowinning process of lead from chloride aqueous solution is investigated. The effect of the factors such as cathode material, current density, temperature, concentration of pb^2＋ and HCl in electrolyte, addition agents on current efficiency, cell voltage and quality of the deposits are researched. The results show that the addition of bone glue and β-naphthol can not obviously improve the nature of the deposits and current efficiency, but result in the sharp increase of cell voltage. So, the additive is unnecessary. A comparative smooth and compact lead deposit with about 92 % current efficiency can be achieved on stainless steel and lead cathode under the conditions of a current density of 100A/m^2, temperature 55℃, pb^2＋ 30g/L and HCl 6g/L. The cathode lead product can be directly used for ingot casting.

关 键 词：冶金技术 铅 电解 氯化铅 

分 类 号：TF812[冶金工程—有色金属冶金] TF111.52