Separation and recovery of rare metals from secondary buttery using mineral processing and refining technologies

2014 Fiscal Year Final Research Report

• Project/Area Number: 24360376
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Recycling engineering
• Research Institution: Kansai University
• Principal Investigator: SHIBATA Junji 関西大学, 環境都市工学部, 教授 (70067742)
• Co-Investigator(Kenkyū-buntansha): MURAYAMA Norihiro 関西大学, 環境都市工学部, 准教授 (90340635) ; KOYANAKA Shigeki 独立行政法人産業技術総合研究所, 環境管理技術研究部門, 主任研究員 (60357035)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: 二次電池 / レアメタル / リサイクル / 乾式処理 / 湿式処理 / 粉砕 / 分級 / 溶媒抽出

Outline of Final Research Achievements

Lithium ion battery (LIB) is composed of valuable metals such as Li, Co, Ni. The toxic and flammable electrolyte, LiPF6, and organic solvents, ethylene carbonate and dimethyl carbonate are used for an electrolytic solution. By this reason, the treatment process should have crushing, classifying and hydrometallurgical treatments after burning LIB at about 500℃.
The recycling technology of used LIB has been investigated in order to recover rare metals such as Li, Co and Ni with the combination process of crushing, classifying and hydrometallurgical treatments. The burnt LIB used for PC was employed in this research. Then, the physical treatments consisting of crushing, classifying and magnetic separation, and the chemical treatments containing acid leaching, hydroxide precipitation, solvent extraction and carbonate precipitation methods were applied. The treatment process for LIB was established according to our results.

Free Research Field

湿式製錬