【摘要】 采用响应曲面法的中心组合设计，以焦亚硫酸钠为还原剂，对硅孔雀石氧化铜钴矿在硫酸溶液体系下还原酸浸过程的控制因素进行系统优化，研究各因素对钴浸出率的影响，获得合理的浸出条件以减少浸出过程中硅胶造成的干扰。结果表明，适宜的浸出参数为：初始硫酸浓度2.0 mol/L、温度80℃、液固比4 mL/g、搅拌速度350 r/min、浸出时间30 min,该条件下钴浸出率可达85.16%。更多还原

【Abstract】 With sodium metabisulfite as a reducing agent, the copper-cobalt oxide ore of chrysocolla was treated by reductive leaching process in sulfuric acid solution system, and the controlling factors in the process were systematically optimized by adopting a central composite design for response surface methodology. Based on investigation of effects of various factors on cobalt leaching rate, appropriated leaching conditions were obtained for reducing the interference caused by silica gel during the leaching process. The results show that under the following optimal conditions, including sulfuric acid with an initial concentration of 2.0 mol/L, temperature of 80 ℃, liquid and solid in a ratio of 4 mL/g, stirring at a speed of 350 r/min and leaching time of 30 min, the cobalt leaching rate can reach 85.16%.更多还原