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

作     者：肖发新 曹岛 毛建伟 申晓妮 任凤章 Fa-xin XIAO;Dao CAO;Jian-wei MAO;Xiao-ni SHEN;Feng-zhang REN

作者机构：河南科技大学材料科学与工程学院洛阳471003 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 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2014年第24卷第1期

页      面：271-278页

核心收录：

学科分类：080603[工学-有色金属冶金] 0806[工学-冶金工程] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0703[理学-化学] 0814[工学-土木工程] 0702[理学-物理学] 

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 

主　　题：As Bi As Bi antimonate copper electrolyte removal purification 

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.