公开(公告)号：US20240410033A1

公开(公告)日：2024-12-12

申请号：US18665807

申请日：2024-05-16

Applicant: POSTECH RESEARCH AND BUSINESS DEVELOPMENT FOUNDATION

Inventor： Yong Tae KIM ,  Young Jin LIM

IPC: C22B3/00 ,  C22B7/00 ,  C22B15/00 ,  H01M10/54

Abstract: A method for recovering valuable metals from waste batteries according to one embodiment of the present invention comprises: an impurity removal process for removing impurities comprising Cu from a waste battery raw material and discharging an aqueous phase comprising Ni and Co; and a Co extraction process to extract Co from the aqueous phase comprising Ni and Co and discharge an aqueous phase comprising Ni, wherein the impurity removal process may be carried out by mixing a dialkylphosphoric acid-based solvent extractant with another solvent extractant having a synergistic effect to increase the separation factor of Co and Cu.