文章信息/Info

Title:

Study on Selective Lithium Extraction from Pyrite Sulfation Roasting in Ternary Lithium Batteries

文章編號:

1674-3962(2024)06-0494-09

作者:

李宗潤; 鐘媛媛; 李鵬飛; 鄒景田; 陸昕宇; 王小瑋; 張佳峰

中南大學冶金與環境學院，湖南 長沙 410083

Author(s):

LI Zongrun;  ZHONG Yuanyuan;  LI Pengfei;  ZOU Jingtian;  LU Xinyu;  WANG Xiaowei;  ZHANG Jiafeng

School of Metallurgy and Environment, Central South University，Changsha 410083，China

關鍵詞:

廢舊鋰離子電池; 選擇性提鋰; 硫酸化焙燒; 黃鐵礦; 碳酸鋰

Keywords:

spent lithium-ion batteries;  selective lithium extraction;  sulfation roasting; pyrite;  lithium carbonate

分類號:

X758；TF803

DOI:

10.7502/j.issn.1674-3962.202308034

文獻標志碼:

A

摘要:

隨著新能源汽車的迅猛普及，鋰鹽需求呈現急劇增長，進而制約了鋰離子電池的快速發展。如何高效回收廢舊鋰離子電池中的鋰元素成為緩解這一矛盾的重要課題。然而，現有的回收工藝更加偏向對鎳和鈷等金屬的回收，導致鋰元素在漫長的濕法與冶金工序中損耗嚴重，回收率較低。針對上述問題，提出采用黃鐵礦硫酸化焙燒�菜�浸法的高效選擇性提鋰回收方案，以從廢舊鋰離子電池的三元正極材料中回收鋰元素并實現再生利用。該方法不僅縮短了鋰回收流程，實現了98��68%的鋰回收率，還成功完成了合成碳酸鋰的高效增值利用，為廢舊鋰離子電池中鋰元素的回收利用研究提供了有益的借鑒。

Abstract:

With the rapid proliferation of new energy vehicles, there is a considerable surge in demand for lithium salts, consequently imposing constraints on the advancement of lithium-ion batteries. Addressing this issue, the efficient recuperation of lithium from spent lithium-ion batteries emerges as a pivotal solution. Notably, prevailing recovery techniques predominantly prioritize nickel and cobalt retrieval, often culminating in substantial lithium losses and diminished recovery rates during protracted wet and pyrometallurgical processes. Against this backdrop, this study advocates the utilization of the pyrite sulfation roasting water immersion method for the proficient and selective extraction of lithium from waste lithium-ion battery ternary cathode materials. This approach curtails the lithium recovery timeline, achieved a lithium recovery rate of 98.68%, and accomplishes a value-added and productive utilization of lithium by synthesizing the lithium carbonate. The outcomes offer valuable insights into the domain of lithium recovery from discarded lithium-ion batteries, carrying significance for future research endeavors in this sphere.