发明名称 |
LITHIUM RECOVERY METHOD |
摘要 |
To provide a lithium recovery method which is capable of efficiently recovering lithium without containing impurities, such as phosphorus and fluorine. In the present invention, an alkali is added to a discharge liquid and/or a cleaning liquid containing lithium discharged in a process of recovering valuable metals from a lithium ion battery, an acidic solvent extractant is caused to be in contact with the discharge liquid and/or the cleaning liquid under a condition of pH 9 or less and a temperature of 0 to 25°C and lithium ions are extracted, and the acidic solvent extractant having extracted the lithium ions is caused to be in contact with an acid solution of pH 3 or less and the lithium ions are stripped. |
申请公布号 |
EP2811040(A4) |
申请公布日期 |
2015.10.07 |
申请号 |
EP20120867524 |
申请日期 |
2012.02.03 |
申请人 |
SUMITOMO METAL MINING CO., LTD. |
发明人 |
ISHIDA, HITOSHI;ASANO, SATOSHI |
分类号 |
C22B3/20;C22B3/26;C22B3/44;C22B7/00;C22B26/12;H01M10/0525;H01M10/54 |
主分类号 |
C22B3/20 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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