The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 21, 2024
Filed:
May. 21, 2021
Ecopro Innovation Co., Ltd., Chungcheongbuk-do, KR;
Suk Joon Park, Gyeongsangbuk-do, KR;
Myung Gyu Lee, Gyeonggi-do, KR;
Jeong Sik Hong, Chungcheongbuk-do, KR;
So Yeong Byun, Chungcheongbuk-do, KR;
Gwang Seok Lee, Gyeongsangbuk-do, KR;
Jong Sun Park, Chungcheongbuk-do, KR;
Beom Seok Seo, Gyeongsangbuk-do, KR;
Min Woo Lee, Chungcheongbuk-do, KR;
Da Mo A Kim, Chungcheongbuk-do, KR;
Hui Sang Kim, Gyeongsangbuk-do, KR;
A Ram Park, Chungcheongbuk-do, KR;
ECOPRO INNOVATION CO., LTD., Chungcheongbuk-Do, KR;
Abstract
A method according to an embodiment is for recovering a valuable metal from a waste electrode material of a lithium secondary battery by using lithium carbonate. An anode-cathode mixed electrode material that has been separated by draining, crushing, screening, and sorting a waste lithium secondary battery is preprocessed. A precipitation operation performed by adding lithium carbonate (Li2CO3) to a metal melt acquired by performing sulfuric acid dissolution using sulfuric acid. A valuable metal such as nickel, cobalt, manganese, aluminum, and copper is recovered as a residue in the form of a carbonate composite, and a lithium sulfate (Li2SO4) aqueous solution including lithium is recovered as a filtrate.