Title:
METHOD FOR PROCESSING LITHIUM ION BATTERY SCRAP
Document Type and Number:
WIPO Patent Application WO/2020/203585
Kind Code:
A1
Abstract:
This method is for processing lithium ion battery scrap and comprises: a leaching step for leaching lithium ion battery scrap with an acid to obtain a post-leaching liquid that contains at least fluoride ions and aluminum ions; a neutralization step for neutralizing the post-leaching liquid so as to be in the range of pH 5.3-5.5, and removing at least a portion of the aluminum ions from the post-leaching liquid, to obtain a post-neutralization liquid; and an extraction step for performing solvent extraction on the post-neutralization liquid, and extracting the remaining portion of the aluminum ions from the post-neutralization liquid.
Inventors:
ARAKAWA JUNICHI (JP)
HAGA YASUFUMI (JP)
HAGA YASUFUMI (JP)
Application Number:
PCT/JP2020/013470
Publication Date:
October 08, 2020
Filing Date:
March 25, 2020
Export Citation:
Assignee:
JX NIPPON MINING & METALS CORP (JP)
International Classes:
C22B3/06; B09B3/00; C22B3/26; C22B7/00
Domestic Patent References:
| WO2017159745A1 | 2017-09-21 |
Foreign References:
| JP2014114470A | 2014-06-26 | |||
| JP2015183292A | 2015-10-22 | |||
| CN109439907A | 2019-03-08 | |||
| EP2450991A1 | 2012-05-09 | |||
| JP2010180439A | 2010-08-19 | |||
| US20110135547A1 | 2011-06-09 | |||
| JPS576457B2 | 1982-02-04 |
Other References:
See also references of EP 3950978A4
Attorney, Agent or Firm:
AXIS PATENT INTERNATIONAL (JP)
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