利用电解锰阳极渣去除硫酸锰溶液中钼的试验研究

Experimental Study on the Removal of Molybdenum from Manganese Sulfate Solution with Electrolytic Manganese Anode Slag

固体废弃物电解锰阳极渣中的主要成分为二氧化锰,其比表面积大,具有良好的吸附效果。为了研究电解锰阳极渣对硫酸锰溶液中钼去除效果的影响,以贵州铜仁某电解锰阳极渣为吸附剂,考察pH值、电解锰阳极渣添加量、反应时间和反应温度等条件对硫酸锰溶液中钼去除效果的影响。结果表明,去除钼最适宜的条件为:溶液pH=3、电解锰阳极渣添加量2.0 g、反应时间30 min、反应温度60℃,此时钼的去除率为99.16%,溶液中钼的残余量为0.27 mg/L,符合《电池用硫酸锰》(HG/T 4823—2015)一等品的要求。利用电解锰阳极渣来降低硫酸锰溶液中钼的含量,为大量利用堆存的电解锰阳极渣固体废弃物提供有效思路,提高企业经济效益的同时,还保护了生态环境。

The main component in the solid waste electrolytic manganese anode slag is manganese dioxide,which has a large specific surface area and a good adsorption effect.In order to study the influence of electrolytic manganese anode slag on the removal of molybdenum in manganese sulfate solution,an electrolytic manganese anode slag in Tongren,Guizhou Province was used as an adsorbent to investigate the effects of pH,electrolytic manganese anode slag addition,reaction time and reaction temperature on molybdenum removal in manganese sulfate.The results showed that the most suitable conditions for removing molybdenum is pH of 3,electrolytic manganese anode slag addition amount of 2.0 g,reaction time of 30 min,reaction temperature of 60℃,in which the removal rate of molybdenum is 99.16%,and the residual amount of molybdenum in the solution is 0.27 mg/L,which meets the first-class requirements of Manganese sulfate for batteries(HG/T 4823—2015).The use of electrolytic manganese anode slag to reduce the content of molybdenum in the manganese sulfate solution provides an effective idea for the large-scale use of solid waste of electrolytic manganese anode slag,which improves the economic benefits of the enterprise while protecting the ecological environment.