公开(公告)号：EP4190925A1

公开(公告)日：2023-06-07

申请号：EP21216155.8

申请日：2021-12-20

Applicant: AK tree Co., Ltd ,  Ahn, Hyo Soo

Inventor： AHN, Hyo Soo

IPC: C22B7/00 ,  C22B26/12 ,  H01M10/54 ,  C22B23/02 ,  C22B47/00 ,  B03C1/02 ,  B07B1/22 ,  B07B1/28

Abstract: Proposed are a method and a system for separating a cathode material of a waste lithium secondary battery using an oxidation reaction of an anode material and a reduction reaction of the cathode material. When lithium is heated to a level where lithium can undergo an explosive reaction using the low-temperature pyrolysis system, the binder, the electrolyte, and the separator contained in the waste lithium secondary battery are gasified into syngas by the explosive reaction of lithium and the resulting syngas is removed. The reduction reaction of the cathode material and the oxidation reaction of the anode material are promoted by the continuous explosive reaction of lithium and the stirring action of the spiral. As a result, the black powder and the current collector mixture are extracted. Therefore, it is possible to improve the recovery rate of valuable metals to more than 97%, thereby improving recycling efficiency.

公开(公告)号：EP4481075A1

公开(公告)日：2024-12-25

申请号：EP24158883.9

申请日：2024-02-21

Applicant: AK tree Co., Ltd ,  Libus987 Inc

Inventor： AHN, Hyo Soo ,  KIM, Eun Jung

IPC: C22B26/12 ,  C22B1/02 ,  B09B3/40 ,  C22B5/12 ,  C22B7/00 ,  C22B23/02 ,  H01M10/54 ,  B09B101/16

Abstract: The present invention provides a reduced metal powder prepared by processing a waste lithium ion secondary battery to recover valuable metals from the waste lithium ion secondary battery in an economical and environmentally friendly manner. To achieve the goal described above, the reduced metal powder according to the invention is prepared by pyrolyzing a waste lithium ion secondary battery, and contains metals Ni and Co and has magnetism.

公开(公告)号：EP4509621A1

公开(公告)日：2025-02-19

申请号：EP24158882.1

申请日：2024-02-21

Applicant: AK tree Co., Ltd ,  Libus987 Inc

Inventor： AHN, Hyo Soo ,  KIM, Eun Jung

IPC: C22B26/12 ,  C22B5/12 ,  B09B3/40 ,  C22B7/00 ,  C22B23/02 ,  C22B1/02 ,  H01M10/54 ,  B09B101/16

Abstract: An object of the invention is to provide a method for economically and eco-friendly recovering an electrode raw material for a positive electrode and a negative electrode from a waste lithium ion secondary battery, which is formed by the pyrolysis of a waste lithium ion secondary battery, and an electrode raw material for a positive electrode and a negative electrode, obtained therefrom. To accomplish the object, a recycling method of a waste lithium ion secondary battery according to the invention may include (a) loading a waste lithium ion secondary battery into a pyrolysis furnace, (b) increasing the internal temperature of the pyrolysis furnace to induce self-heating of the waste lithium ion secondary battery, (c) maintaining a self-heating reaction of the waste lithium ion secondary battery, (d) discharging a first powder formed after completing the self-heating reaction of the waste lithium ion secondary battery, and (e) injecting the first powder into water, dissolving a lithium component included in the first powder, and separating and recovering a lithium aqueous solution, a powder settled in the lithium aqueous solution, and a floating material on the surface of the lithium aqueous solution, separately.