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JP2005149889A Recovery method of metal from waste secondary battery 审中-公开
标题翻译：从废物二次电池中回收金属的方法
公开(公告)号：JP2005149889A
公开(公告)日：2005-06-09
申请号：JP2003385079
申请日：2003-11-14
申请人： Ind Technol Res Inst , 財団法人工業技術研究院
发明人： RIN SHUNJIN , CHO IRYU , KO GYOKURIN , KYO TETSUGEN
IPC分类号： C22B7/00 , C22B3/20 , C22B3/26 , C22B3/42 , C22B17/00 , C22B19/30 , C22B23/00 , C22B59/00 , C25C1/08 , H01M6/52 , H01M10/30 , H01M10/54
CPC分类号： C22B3/0005 , C22B7/001 , C22B7/007 , C22B17/04 , C22B23/0453 , H01M10/052 , H01M10/30 , H01M10/54 , Y02P10/214 , Y02P10/234 , Y02W30/84
摘要： PROBLEM TO BE SOLVED: To provide a method for recovering precious metal when Li ion secondary battery, Ni-H secondary battery and NiCd secondary battery are in a mixed state.
SOLUTION: In the method for recovering the metal by having ashes generated containing metal and metal oxide from waste battery, (a) the ashes are dissolved in sulfuric acid solution. (b) Alkali is added and Cd ion and rare earth metal ion are settled. (c) Solid liquid separation is performed. (d) Solution is extracted by organic agent, and a water layer containing Ni and Co ion and an organic layer containing a large quantity of Cd, Fe and Zn ion are formed. (e) The water layer is extracted by an organic agent, and the organic layer containing a large quantity of the Co ion and the water layer containing a large quantity of Ni ion are formed. (f) The organic layer containing a large amount of Co ion is subjected to back extraction by sulfuric acid solution, and the water layer containing a large amount of Co ion is obtained. (g) Electrolysis is carried out using the water layer containing a large amount of Ni ion, and Ni metal is generated by reduction. (h) Electrolysis is carried out using the water layer containing a large amount of the Co ion, and Co metal is generated by reduction. (i) Sediment of lithium carbonate is formed by adding carbonate to the remaining solution.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供当Li离子二次电池，Ni-H二次电池和NiCd二次电池处于混合状态时回收贵金属的方法。解决方案：在通过从废电池中产生含有金属和金属氧化物的灰分来回收金属的方法中，（a）将灰分溶解在硫酸溶液中。（b）添加碱，Cd离子和稀土金属离子沉降。（c）进行固液分离。（d）用有机试剂萃取溶液，形成含有Ni和Co离子的水层和含有大量Cd，Fe和Zn离子的有机层。（e）通过有机试剂提取水层，形成含有大量Co离子和含有大量Ni离子的水层的有机层。（f）含有大量Co离子的有机层通过硫酸溶液进行反萃取，得到含有大量Co离子的水层。（g）使用含有大量Ni离子的水层进行电解，通过还原生成Ni金属。（h）使用含有大量Co离子的水层进行电解，通过还原生成Co金属。（i）通过向剩余的溶液中加入碳酸盐形成碳酸锂的沉积物。版权所有（C）2005，JPO＆NCIPI

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