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1. (WO2017155198) METHOD FOR PRODUCING NICKEL POWDER

Pub. No.:    WO/2017/155198    International Application No.:    PCT/KR2017/000061
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Jan 04 00:59:59 CET 2017
IPC: B22F 9/22
B22F 9/30
Applicants: PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY
부경대학교 산학협력단
Inventors: WANG, Jei-Pil
왕제필
Title: METHOD FOR PRODUCING NICKEL POWDER
Abstract:
A method for producing nickel powder is disclosed. According to an embodiment of the present invention, provided is a method for producing nickel powder from a positive electrode active material of a waste lithium ion battery, the method comprising: extracting the positive electrode active material from the waste lithium ion battery; pyrolyzing the positive electrode active material under a reducing gas atmosphere to separate the same into a nickel oxide and an alkali metal carbonate; washing the nickel oxide and the alkali metal carbonate with water to remove the alkali metal carbonate; and reducing the nickel oxide to form nickel powder.