CAJ | 학술논문

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。
통과향함유45 g/L Cu2+、185 g/L H2SO4、10 g/L As화0.5 g/L Bi적동전해액중가입Sb(V)，연구오개제대동전해액중신、제、필잡질탈제작용궤리。과려전해액，채용화학분석、SEM、TEM、EDS、XRD、FTIR 등방법대침정사적결구형모화성분진행표정。결과표명，침정사정척촌위50~200μm적불규칙괴상，기화학성분주요위신、제、필화양。홍외광보검측표명，침정사주요특정관능단위 As-O-As、As-O-Sb、Sb-O-Bi、Sb-O-Sb화Bi-O-Bi。X사선연사화전자연사검측결과표명，침정사유AsSbO4、BiSbO4화Bi3SbO7조성。제산염적생성시오개제탈제동전해액중신、제、필잡질적주요원인。
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.