公开(公告)号：US20230160036A1

公开(公告)日：2023-05-25

申请号：US17922644

申请日：2021-05-21

申请人： ECOPRO INNOVATION CO., LTD.

发明人： Suk Joon PARK ,  Myung Gyu LEE ,  Jeong Sik HONG ,  So Yeong BYUN ,  Gwang Seok LEE ,  Jong Sun PARK ,  Beom Seok SEO ,  Min Woo LEE ,  Da Mo A KIM ,  Hui Sang KIM ,  A Ram PARK

IPC分类号： C22B3/00 ,  C22B7/00 ,  C22B26/12 ,  C22B3/08 ,  C22B1/00 ,  H01M10/54 ,  C01G53/06 ,  C01G51/06

CPC分类号： C22B23/043 ,  C22B7/007 ,  C22B26/12 ,  C22B3/08 ,  C22B1/005 ,  C22B23/0453 ,  H01M10/54 ,  C01G53/06 ,  C01G51/06

摘要： 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.