Role of Sb(V) in removal of As, Sb and Bi impurities from copper electrolyte  

五价锑在脱除铜电解液中砷、锑、铋杂质中的作用(英文)

作　　者：肖发新[1,2] 曹岛[1] 毛建伟[1] 申晓妮[1] 任凤章[1] 

机构地区：[1]河南科技大学材料科学与工程学院,洛阳471003 [2]河南科技大学河南省有色金属材料科学与加工技术重点实验室,洛阳471003

出　　处：《Transactions of Nonferrous Metals Society of China》2014年第1期271-278,共8页中国有色金属学报（英文版）

基　　金：Project(50904023)supported by the National Natural Science Foundation of China;Project(2010B450001)supported by the Natural Science Fund of Department of Education of Henan Province,China;Project(092300410064)supported by the Basic and Frontier Technologies Research Projects of Henan Province,China

摘　　要：The function mechanism of Sb（V） in As, Sb and Bi impurities removal from copper electrolyte was investigated by adding Sb（V） ion in a synthetic copper electrolyte containing 45 g/L Cu2＋, 185 g/L H2SO4, 10 g/L As and 0.5 g/L Bi. The electrolyte was filtered, and the precipitate structure, morphology and composition were characterized by chemical analysis, SEM, TEM, EDS, XRD and FTIR. The results show that the precipitate is in the shape of many irregular lumps with size of 50-200 μm, and it mainly consists of As, Sb, Bi and O elements. The main characteristic bands in the FTIR spectra of the precipitate are As-O-As, As-O-Sb, Sb-O-Bi, Sb-O-Sb and Bi-O-Bi. The precipitate is the mixture of microcrystalline of AsSbO4, BiSbO4 and Bi3SbO7 by XRD and electronic diffraction. The removal of As, Sb and Bi impurities by Sb（V） ion can be mainly ascribed to the formation of antimonate in copper electrolytes.通过向含有45 g/L Cu2＋、185 g/L H2SO4、10 g/L As和0.5 g/L Bi的铜电解液中加入Sb（V），研究五价锑对铜电解液中砷、锑、铋杂质脱除作用机理。过滤电解液，采用化学分析、SEM、TEM、EDS、XRD、FTIR 等方法对沉淀渣的结构形貌和成分进行表征。结果表明，沉淀渣呈尺寸为50-200μm的不规则块状，其化学成分主要为砷、锑、铋和氧。红外光谱检测表明，沉淀渣主要特征官能团为 As-O-As、As-O-Sb、Sb-O-Bi、Sb-O-Sb和Bi-O-Bi。X射线衍射和电子衍射检测结果表明，沉淀渣由AsSbO4、BiSbO4和Bi3SbO7组成。锑酸盐的生成是五价锑脱除铜电解液中砷、锑、铋杂质的主要原因。

关 键 词：AS BI AS BI ANTIMONATE copper electrolyte REMOVAL purification 

分 类 号：TF811[冶金工程—有色金属冶金]