Title:
廃リチウムイオン電池からの有価金属の回収方法
Document Type and Number:
Japanese Patent JP7400589
Kind Code:
B2
Abstract:
To provide a method capable of effectively cooling and using surplus heat by carbon combustion, and as a result, capable of inexpensively and efficiently recovering valuable metal.SOLUTION: A method for recovering valuable metal from a waste lithium-ion battery includes: an oxidize-roasting process to obtain an oxidize-roasted material by oxidizing and roasting the waste lithium-ion battery; a melting process to obtain a molten material by melting the oxidize-roasted material; and a slag separation process to recover an alloy including the valuable metal by separating a slag from the molten material. In the method, a calcium carbonate (CaCO3) is injected into the waste lithium-ion battery and the oxidize-roasting is carried out in an atmosphere where an air ratio is 1-4 in the oxidize-roasting process.SELECTED DRAWING: Figure 1
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Inventors:
Toshihiko Nagakura
Application Number:
JP2020061576A
Publication Date:
December 19, 2023
Filing Date:
March 30, 2020
Export Citation:
Assignee:
Sumitomo Metal Mining Co., Ltd.
International Classes:
C22B7/00; B09B3/35; B09B3/40; C22B1/02; C22B15/00; C22B23/02; H01M10/54
Domestic Patent References:
| JP2012172169A | ||||
| JP2012224877A | ||||
| JP2012172175A | ||||
| JP2013064177A | ||||
| JP2013091826A | ||||
| JP10158751A | ||||
| JP2019502826A | ||||
| JP2012251220A |
Foreign References:
| WO2020013294A1 |
Attorney, Agent or Firm:
Masayuki Shobayashi
Kazuyoshi Hayashi
Kazuyoshi Hayashi