(1. 昆明理工大学 冶金系， 昆明 650093;
2. 昆明冶金研究院 冶炼室， 昆明650031)
摘 要: CoSbH2O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。
关键字: Sb2O3；硫酸锌电解液； 除钴
（1. Department of Metallurgy, Kunming University of Science and Technology， Kunming 650093, P.R.China;
2. Department of Metallurgy, Kunming Metallurgy Research Institute， Kunming 650031, P.R.China）
Abstract:PotentialpH pattern of CoSbH2O 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 Xray 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.
Key words: Sb2O3； zinc sulphate electrolyte； removal of cobalt
