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Title:
SYSTEM AND METHOD FOR TREATING WASTE LITHIUM ION BATTERY
Document Type and Number:
WIPO Patent Application WO/2020/246079
Kind Code:
A1
Abstract:
Provided are a system and a method for treating a waste lithium ion battery, by which the recovery rate of lithium can be improved. One example of this system for treating a waste lithium ion battery includes a first aqueous solution production device (1) in which an active substance extracted from a waste lithium ion battery is immersed in a first elution tank (1a) containing water, and carbon dioxide gas is bubbled, so as to produce an aqueous solution which has a pH of 5.5-8.5 and into which lithium contained in the active substance has been eluted; a first solid-liquid separation device (2) for removing solid components from the aqueous solution produced in the first aqueous solution production device (1); a first crystallization device (3) for crystallizing lithium carbonate from the aqueous solution from which solid components have been removed in the first solid-liquid separation device (2); and a second solid-liquid separation device (4) for performing solid-liquid separation on a slurry containing lithium carbonate crystallized in the first crystallization device (3), and then extracting lithium carbonate.

Inventors:
ANDO FUMINORI
OSAWA HIROAKI
TAKADA SHOJI
NAKAJIMA CHIE
YAMASHITA MARIKO
SUGATA MASAHIRO
FUKUMOTO KOJI
TSUZAWA MASAKI
NAGAI RYOSUKE
Application Number:
JP2020/007573
Publication Date:
December 10, 2020
Filing Date:
February 26, 2020
Export Citation:
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Assignee:
KAWASAKI HEAVY IND LTD (JP)
International Classes:
B03B5/28; B09B3/00; B09B5/00; C22B3/06; C22B3/22; C22B3/44; C22B7/00; C22B26/12; H01M10/54
Domestic Patent References:
WO2011104798A12011-09-01
Foreign References:
JP2019026916A2019-02-21
JP2006004883A2006-01-05
JP2000119764A2000-04-25
JP2019039028A2019-03-14
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
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