【摘要】 采用沉淀法将硫酸锰粗溶液制备成杂质含量低的富锰相，通过单因素实验法探究了反应时间、反应温度、pH值以及沉淀剂投加速度对沉淀效率的影响，并分析了最终获得的富锰相杂质含量情况。结果表明：以R为沉淀剂，Mn²⁺质量浓度38 g/L的浸出液在pH值8.0、反应温度60℃、反应时间4 h、沉淀剂投加速度0.5 L/h条件下，Mn²⁺转化率为94.3%;ICP和EDS分析结果显示富锰相沉淀物中杂质离子（K、Na、Ca、Mg）含量较低。更多还原

【Abstract】 Manganese-rich phase with low impurity content was prepared with manganese sulfate crude solution by precipitation. A single-factor experiment was carried out to explore effects of reaction time, reaction temperature, pH value and feeding speed of precipitating agent on precipitation efficiency, and then the content of impurity in the finally prepared manganese-rich phase was also analyzed. After the leaching solution with Mn²⁺ in mass concentration of 38 g/L, and pH of 8.0 was precipitated at 60 ℃ for 4 h, with R as precipitating agent fed at a speed of 0.5 L/h, the conversion rate of Mn²⁺ was 94.3%. The ICP and EDS analyses showed that there were low content of impurity ions（K, Na, Ca, Mg） in the precipitate of manganese-rich phase.更多还原