US 2017/0009358 A1Published application

Method for simultaneously recovering cobalt and manganese from lithium based battery

AssigneeKorea Institute of Geoscience and Mineral Resource (Kigam)

InventorsShun-Myung SHIN, Sung-Ho JU, Dong-Ju SHIN, Jei-Pil WANG

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Abstract

The present invention relates to a method of simultaneously recovering cobalt (Co) and manganese (Mn) from lithium-based BATTERY, and more particularly, to a method that is capable of simultaneously recovering cobalt and manganese from lithium-based BATTERY, i.e., recycled resources that contain large amounts of cobalt and manganese, with high purities using multistage leaching and electrowinning methods. According to the method of the present invention, cobalt and manganese can be simultaneously recovered from lithium-based BATTERY as recycled resources, and a recovery method that is cost-effective compared to conventional methods can be provided.

Claims7

Dependent claims

A method of simultaneously recovering cobalt and manganese from lithium-based BATTERY, the method comprising:

(1) heat-treating the lithium-based BATTERY;
(2) grinding the heat-treated BATTERY to obtain ground particles, and separating particles having a particle size of 12 mesh or less from the ground particles;
(3) subjecting the separated particles to multistage leaching;
(4) adding 2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester (PC88A) to a product of the multistage leaching to obtain an electrowinning solution;
(5) subjecting the electrowinning solution to electrowinning using circulation-type electrodes, the electrodes including a cathode made of stainless steel and an anode made of a 93% Pb-7% Sn alloy;
and
(6) washing.

4 more elements

Dependencies are inferred from the claim text.