Title:
METHOD FOR RECOVERING LITHIUM FROM WASTE LITHIUM SECONDARY BATTERY USING DRY SMELTING
Document Type and Number:
WIPO Patent Application WO/2022/234884
Kind Code:
A1
Abstract:
The present invention relates to a method for recovering lithium from a waste lithium secondary battery using dry smelting, the method comprising the steps of melting a waste lithium secondary battery containing nickel, cobalt, copper, and lithium, flux having a melting temperature of 1,400°C or less, and a lithium recovery agent, and separating and obtaining slag, a metallic phase, and a lithium compound, wherein the lithium recovery agent contains at least one of chlorine and fluorine, and each of the nickel, cobalt, and copper is contained 10 times or more in the metallic phase than in the slag.
More Like This:
Inventors:
MOON NAM IL (KR)
KIM EUNG BAE (KR)
LEE HO JO (KR)
KIM EUNG BAE (KR)
LEE HO JO (KR)
Application Number:
PCT/KR2021/007246
Publication Date:
November 10, 2022
Filing Date:
June 10, 2021
Export Citation:
Assignee:
YOUNG POONG CORP (KR)
International Classes:
H01M10/54; C01B25/30; C22B7/00; C22B26/12
Domestic Patent References:
| WO2020104164A1 | 2020-05-28 |
Foreign References:
| JP2013091826A | 2013-05-16 | |||
| KR20160076021A | 2016-06-30 | |||
| KR20200065503A | 2020-06-09 | |||
| JP5632169B2 | 2014-11-26 | |||
| KR20130059126A | 2013-06-05 | |||
| JP2019135321A | 2019-08-15 |
Other References:
REN GUO-XING; XIAO SONG-WEN; XIE MEI-QIU; PAN BING; CHEN JIAN; WANG FENG-GANG; XIA XING: "Recovery of valuable metals from spent lithium ion batteries by smelting reduction process based on FeO–SiO2–Al2O3slag system", TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA, vol. 27, no. 2, 1 January 1900 (1900-01-01), AMSTERDAM, NL , pages 450 - 456, XP029953085, ISSN: 1003-6326, DOI: 10.1016/S1003-6326(17)60051-7
Attorney, Agent or Firm:
ENVISION PATENT & LAW FIRM (KR)
Download PDF: