公开(公告)号：US20230227938A1

公开(公告)日：2023-07-20

申请号：US17885676

申请日：2022-08-11

Applicant: POSTECH Research and Business Development Foundation

Inventor： Yong Tae KIM ,  Go Gwon CHOE

IPC: C22B3/00 ,  C22B3/44

CPC classification number: C22B23/0461 ,  C22B3/44

Abstract: The present invention relates to a method for manufacturing a high-purity nickel/cobalt mixed solution for cathode materials by using a two-circuit process, and particularly to a method for manufacturing a high-purity Ni/Co mixed solution for cathode materials by using a two circuit process that adopts a two-circuit process to extract cobalt and nickel in a simultaneous manner and prepare a Ni/Co mixed solution, thereby reducing the investment cost for the manufacturing process and downsizing mixer-settler facilities to maximize the efficiency of site utilization.
The present invention skips the crystallization process by using the two-circuit process, so it is possible to solve the problem of increasing the unit product cost due to the additional process cost, prevent an increase in the consumption of the adjuster solution in each mixer-setter tank for pH adjustment and the process costs, and realize eco-friendly effects, such as cutting down the production of the process wastewater.