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2024 Vol.33, Issue 2 Preview Page

Article Review

The Enhancement of Recycling Processes Efficiency of Lithium Ion Batteries; A Review

리튬이온전지 재활용공정 효율 향상을 위한 공정개선 연구동향

Kyoungkeun Yoo1*
,
Wonhwa Heo1
,
Bumchoong Kim1
유 경근1*
,
허 원화1
,
김 범중1
1Department of Energy and Resources Engineering, National Korea Maritime and Ocean University
1국립한국해양대학교 에너지자원공학과
*Corresponding Author
30 April 2024. pp. 24-36
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Abstract

The lithium-ion battery recycling process has been classified into direct recycling, hydrometallurgical process, and pyrometallurgical process. The commercial process based on the hydrometallurgical process produces black mass through pretreatment processes consisting of dismantling, crushing and grinding, heat treatment, and beneficiation, and then each metal is recovered by hydrometallurgical processes. Since all lithium-ion battery recycling processes under development conducts hydrometallurgical processes such as leaching, after the pretreatment process, to produce precursor raw materials, this article suggests a classification method according to the pretreatment method of the recycling process. The processes contain sulfation roasting, carbothermic reduction roasting, and alloy manufacturing, and the economic feasibility of the lithium-ion battery recycling process can be enhanced using unused by-products in the pretreatment process.

Keywords
lithium ion batteries
recycling
pretreatment process
roasting

리튬이온전지 재활용 공정은 직접 재활용, 습식제련공정, 건식제련공정으로 분류되어 왔으며, 습식제련공정 기반 상용공정은 해체, 파분쇄, 열처리, 선별 등으로 구성된 전처리 공정으로 블랙매스를 생산하고 습식제련공정으로 각 금속을 회수한다. 개발 중인 모든 리튬이온전지 재활용공정은 전구체 원료 제조를 위해 전처리공정 후 침출 등의 습식제련공정을 진행하기 때문에 이 글에서는 재활용공정의 전처리공정에 따른 분류법을 제시하였다. 현재 개발 중인 주요 공정은 황산염배소, 탄소열환원, 합금제조 등이며, 전처리공정에서 미이용 부산물의 활용이 가능할 경우 리튬이온전지 재활용 공정의 경제성 향상이 가능하리라 판단된다.

키워드
리튬이온전지
재활용
전처리공정
배소
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Information
  • Publisher :The Korean Institute of Resources Recycling
  • Publisher(Ko) :한국자원리싸이클링학회
  • Journal Title :Resources Recycling
  • Journal Title(Ko) :자원리싸이클링
  • Volume : 33
  • No :2
  • Pages :24-36
  • Received Date : 2024-04-09
  • Revised Date : 2024-04-23
  • Accepted Date : 2024-04-23
  • DOI :https://doi.org/10.7844/kirr.2024.33.2.24
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