Title:
METHOD FOR RECOVERING NICKEL, COBALT, AND LITHIUM FROM DISCARDED SAGGER
Document Type and Number:
WIPO Patent Application WO/2023/172086
Kind Code:
A1
Abstract:
The present invention has the advantage of recovering high-purity lithium hydroxide from a discarded sagger that is to be scrapped, by pulverizing the sagger and then recovering nickel oxide and cobalt oxide, which are positive electrode active materials, through wet magnetic separation, and removing impurities from the recovered nickel oxide and cobalt oxide through Al and Si precipitation reactions and evaporative concentration. Therefore, by using the method for recovering positive electrode active materials and lithium hydroxide from a discarded sagger according to the present invention, high value-added lithium and positive electrode active materials can be recovered and recycled from a discarded sagger that is scrapped during the manufacturing process of lithium secondary batteries, and thus the method is expected to reduce the manufacturing cost of lithium secondary batteries.
Inventors:
SONG WON HONG (KR)
Application Number:
PCT/KR2023/003226
Publication Date:
September 14, 2023
Filing Date:
March 09, 2023
Export Citation:
Assignee:
KOREASEPARATION CO LTD (KR)
International Classes:
C01D15/02; C22B3/22
Foreign References:
| KR102290506B1 | 2021-08-18 | |||
| CN109911946A | 2019-06-21 | |||
| KR102243820B1 | 2021-04-23 | |||
| CN109911909A | 2019-06-21 | |||
| CN112680598A | 2021-04-20 | |||
| US20210344058A1 | 2021-11-04 |
Attorney, Agent or Firm:
KIM, Jeong Hyeon (KR)
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