中南大学学报（自然科学版）2017，Vol.48Issue(9)：2264-2270,7.DOI:10.11817/j.issn.1672-7207.2017.09.002
选择性除去氯化钴溶液中铜的热力学分析
Thermodynamic analysis on removal of copper selectively from cobalt chloride solution
摘要
Abstract
The diagrams of the concentration of Cu2+/Co2+ions and/or their coordination compounds combined with Cl-were respectively drawn according to the thermodynamic equilibrium principle of charge, material and ions at 298 K. It reveals the change discipline of complex ions concentration with change of pH and cT(Cl). Based on the different Cu-removal methods, the thermodynamic was analyzed. In the system of Co-Cu(Ⅱ)-Cl-H2O, the balance concentration of ions at the point of final Cu-removal was calculated and the concentration logarithm diagrams of total metals and sulfur & pH were also obtained. The results show that the copper and cobalt mostly exist in the form of cation ions in the system of Co-Cu(Ⅱ)-Cl-H2O. But copper and cobalt exist as complex anion and free cation, respectively, after adding reducing reagent. Therefore, copper can be removed with anion exchange resin. Copper can be precipitated gradually with the increase of total sulfur concentration, which guarantees no precipitation of cobalt occurs at the point of final Cu-removal. Cu-removal from cobalt solution can be obtained by sulfide way.关键词
氯化钴溶液/选择性/热力学分析/硫化法/除铜Key words
cobalt chloride solution/selective/thermodynamics analysis/sulfide way/Cu-removal分类
矿业与冶金引用本文复制引用
李孟春,钱振,车键勇,陈爱良,马玉天,张燕..选择性除去氯化钴溶液中铜的热力学分析[J].中南大学学报（自然科学版）,2017,48(9):2264-2270,7.基金项目
国家自然科学基金资助项目(51104183) （51104183）
甘肃省科技重大专项计划项目(1602FKDC007) (Project(51104183) supported by the National Science Foundation of China （1602FKDC007）
Project(1602FKDC007) supported by Science and Technology Major Program of Gansu Province) （1602FKDC007）
