Sb₂O₃在硫酸锌溶液净化除钴过程中的机理

来源期刊：中国有色金属学报2000年第5期

论文作者：郭忠诚 阎江峰 杨显万

文章页码：697 - 700

关键词：Sb₂O₃；硫酸锌电解液； 除钴

Key words：Sb₂O₃； zinc sulphate electrolyte； removal of cobalt

摘    要：Co-Sb-H₂O系电位-pH图表明， 在锌粉置换除钴过程中，锑与钴形成金属间化合物，从而提高了锌粉置换除钴的热力学推动力。 扫描电镜观察及X射线衍射结果表明， 锑与镍和钴的存在形式相同， 进一步说明钴与锑形成金属间化合物， 而锌则以碱式硫酸锌、 氧化锌和金属锌的形式存在。

Abstract: Potential-pH pattern of Co-Sb-H₂O system shows that the thermodynamic driving power of removal of cobalt by cementation using zinc powder is raised when metallic compound (CoSb) is formed between cobalt and antimony during removal of cobalt by cementation using zinc powder; scanning electron microscopy and X-ray diffractiondisplay that antimony exsits in the same forms with nickel and cobalt. It is clear that cobalt and antimony form metallic compound (CoSb)， zinc exsitsin the forms of basic zinc sulphate， zinc oxide and zinc.