公开(公告)号：US20240247334A1

公开(公告)日：2024-07-25

申请号：US18290355

申请日：2022-07-04

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

Inventor： Taegong RYU ,  Junho SHIN ,  Jae-Min JEONG

IPC: C22B7/00 ,  C22B1/00 ,  C22B26/12

CPC classification number: C22B7/007 ,  C22B1/005 ,  C22B26/12

Abstract: The present invention provides a high value-added method for resource recovery from lithium sludge and fluoride sludge, and an economic sludge treatment method, wherein lithium fluoride (LiF), which is an insoluble lithium compound, is prepared by reacting lithium sludge with fluoride sludge, and then Li—Al layered double hydroxide (LI-Al LDH), which is an insoluble lithium compound, is prepared by reacting reaction filtrate with an aluminum compound, after which a conversion product is prepared by a sulfation reaction of the Li—Al layered double hydroxide (LI-Al LDH), which is an insoluble lithium compound, with a sulfuric acid compound, a lithium concentrate is prepared by leaching the conversion product with water, and then the lithium concentrate is recirculated as a lithium raw material to efficiently and economically recover lithium ions contained in the lithium sludge, or lithium fluoride (LiF) is prepared, and then lithium ions and fluoride ions are economically recovered from lithium sludge and fluoride sludge via additional precipitation/separation of lithium fluoride through the mechanical vapor recompression (MVR) of the reaction filtrate, and trace amounts of fluoride ions contained in the filtrate are reacted with a calcium compound to separate the filtrate into calcium fluoride precipitate and residual process water and discharge a small amount thereof.

公开(公告)号：US20240191322A1

公开(公告)日：2024-06-13

申请号：US18286797

申请日：2022-11-28

Applicant: KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES

Inventor： Tae-Gong RYU ,  Jun-Ho SHIN ,  Jae-Min JEONG

IPC: C22B7/00 ,  C01B25/30 ,  C01D15/02 ,  C01D15/08 ,  C22B3/00 ,  C22B47/00 ,  H01M10/54

CPC classification number: C22B7/007 ,  C01B25/30 ,  C01D15/02 ,  C01D15/08 ,  C22B23/043 ,  C22B47/00 ,  H01M10/54

Abstract: The present disclosure relates to a method for recovery of valuable metals and a zeolite-containing material from a waste cathode material reaction vessel, in which valuable metals and a zeolite-containing material are recovered from a waste cathode material reaction vessel being discarded, and recycled as resources, thus reducing waste from the waste cathode material reaction vessel.