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以废旧的镍钴锰酸锂电池为原料,经过活性物质的分离、浸出、逐步化学沉淀等工序,有效回收了废旧锂离子电池中的有价值金属。采用H_2SO4和还原剂(NH4)_2SO3对镍钴锰酸锂进行浸出试验,在最佳浸出条件下:H_2SO4 1.0mol/L、(NH4)_2SO3 0.34mol/L、固液比25g/L、反应温度60℃、反应时间40min,Co、Ni、Mn、Li的浸出效率分别为97.61%、98.40%、97.91%和98.43%。然后采用共沉淀法回收浸出液中的镍、钴、锰,最后,通过添加饱和的Na_2CO3回收母液中的Li+。
Abstract：Abstact:Applying spent lithium nickel cobalt manganese oxide battery as raw material,valuable metals in waste lithium ion battery were effectively recovered through separation of active material,leaching,and stepwise chemical precipitation.Leaching experiments were conducted applying H_2SO4 as leaching agent and(NH4)_2SO3 as reductant.Leaching efficiency of Co,Ni,Mn and Li is 97.61%,98.40%,97.91% and 98.43%respectively under the optimum leaching conditions including H_2SO4 concentration of 1.0 mol/L,(NH4)2 SO3 concentration of 0.34 mol/L,ratio of solid to liquid of 25 g/L,reaction temperature of 60℃and reaction time of 40 min.Ni,Co and Mn in leachate are recovered by coprecipitation.Li+in mother liquor is recovered by adding saturated Na_2CO3.
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基本信息:
中图分类号:TM912;X705
引用信息:
[1]孙明藏,叶华,陈武杰,等.从废旧锂离子电池中回收有价值金属的研究[J].有色金属(冶炼部分),2019(03):68-72.
基金信息:
湖南省科技项目(420010110)
2019-03-12
2019-03-12