杂质Cu,Zn,Sn离子与Fe共沉积的电化学行为  

Influence of Impurities Cu, Zn, Sn on Electrolytic Production of High-purity Fe

作　　者：印仁和[1] 吕康 曹为民[1] 张利[1] 戴迎春 张新胜 

机构地区：[1]上海大学理学院化学系,上海201800 [2]国家重点化学工程联合实验室,上海200237

出　　处：《化工冶金》2000年第2期183-186,共4页

基　　金：中国科学院核分析技术开放研究实验室资助!(1997)

摘　　要：研究了杂质Ｃｕ；Ｚｎ，Ｓｎ在氯化物和硫酸盐电解质溶液中与Ｆｅ共沉积的电化学行为及其对提取高纯度电解铁的影响．发现Ｆｅ一Ｃｕ共沉积是Ｃｕ先析出的正常型共沉积，Ｆｅ－Ｚｎ共沉积在４０℃低温时是Ｚｎ先析出的异常型共沉积，８０℃高温时是Ｆｅ先析出的正常型共沉积， Ｆｅ－Ｓｎ共沉积在高电流密度时属Ｆｅ优先析出的异常型共沉积．The influence of Cu, Zn, Sn on electrolytic production of iron in chloride and sulfate baths has been studied. The experimental data show that the codeposition of Fe-Cu is of the regular type, in which Cu is deposited preferentially. The codeposition of Fe-Zn is anomalous at 40℃ with Zn deposited preferentially. At 80℃, it becomes the regular type with Fe deposited preferentially. The content of Sn impurity was lower due to precipitation of Sn hydroxide in the bath.

关 键 词：电解铁 杂质 部分极化曲线 共沉积 电化学行为 

分 类 号：TF111.52[冶金工程—冶金物理化学] TQ150.1[化学工程—电化学工业]