发明名称 |
VALUABLE METAL RECOVERY METHOD |
摘要 |
<p>Provided is a method for improving the recovery rate of valuable metals such as cobalt when drying the battery waste of lithium ion batteries and the like. A second alloy excellent in terms of iron-cobalt separation performance and containing a small amount of iron is obtained by performing: a pre-oxidation step (ST20) for roasting and pre-oxidizing battery waste containing aluminium and iron; a melting step (ST21) for obtaining a molten product by melting the battery waste after the pre-oxidation step; a first slag separation step (ST22) for separating and recovering first slag containing aluminium oxide from the molten product; a second oxidation step (ST23) for oxidizing a molten first alloy after the first slag separation step; and a second slag separation step (ST24) for separating and recovering a second slag containing iron from a second alloy after the second oxidation step (ST23).</p> |
申请公布号 |
EP2677048(A1) |
申请公布日期 |
2013.12.25 |
申请号 |
EP20120746714 |
申请日期 |
2012.02.15 |
申请人 |
SUMITOMO METAL MINING CO., LTD. |
发明人 |
TAKAHASHI, JUN-ICHI;MORI, KAZUHIRO;TAN, TOSHIROU |
分类号 |
C22B23/02;B09B3/00;B09B5/00;C22B1/02;C22B7/00;H01M6/52;H01M10/54 |
主分类号 |
C22B23/02 |
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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