【摘要】 以电解锰阳极泥经还原焙烧—酸浸—深度净化除杂获得的硫酸锰溶液和工业氨水为原料，采用共沉淀法制备高纯Mn₃O₄。考察了搅拌速度、反应温度、空气流速、反应时间以及Mn²⁺/NH⁺₄物质的量比对Mn₃O₄纯度的影响。结果表明，在搅拌速度250 r/min、反应温度60℃、空气流速2.5 L/min、反应时间40 min、Mn²⁺/NH⁺₄物质的量比1∶2的条件下，可成功制备出球形Mn₃O₄,其锰含量为71.45%,满足高纯Mn₃O₄的要求。更多还原

【Abstract】 Using manganese sulfate solution obtained from electrolytic manganese anode slime through reduction roasting-acid leaching-deep impurity removal and industrial ammonium hydroxide as raw materials, high purity manganese tetroxide was prepared by coprecipitation reaction.The factors affecting purity of Mn₃O₄ such as stirring speed, reaction temperature, air gas flow rate, reaction time and manganese-to-ammonia molar ratio were investigated.The results show that spherical Mn₃O₄ has been successfully prepared under the conditions of stirring speed of 250 r/min, reaction temperature of 60 ℃,air gas flow rate of 2.5 L/min, reaction time of 40 min and Mn²⁺/NH⁴⁺molar ratio of 1∶2,and its manganese mass fraction is 71.45%,which are up to the mustard of high purity Mn₃O₄.更多还原