Acid baking of spent lithium ion batteries for selective recovery of major metals: A two-step process


Meshram P., Abhilash A., Pandey B. D. , Mankhand T. R. , DEVECİ H.

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, vol.43, pp.117-126, 2016 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 43
  • Publication Date: 2016
  • Doi Number: 10.1016/j.jiec.2016.07.056
  • Title of Journal : JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
  • Page Numbers: pp.117-126
  • Keywords: Spent LIBs, Baking, Sulfuric acid, Two-stage leaching, Reductant, HYDROMETALLURGICAL PROCESS, VALUABLE METALS, NITRIC-ACID, LI, SEPARATION, PRETREATMENT, EXTRACTION, ALUMINUM, GLUCOSE, WASTES

Abstract

The present work focuses on a two-step process for selective dissolution of metals from cathode active material of spent LIBs. Cathode powder baked at 300 degrees C using H2SO4 being subjected to first stage leaching with water extracted 78.6% Li, 80.4% Co in 60 min at 75 degrees C and 25% pulp density; recovery of Ni and Mn being low (<15%). In second stage, reductive leaching was performed using an acid mixture (H2SO4 and HNO3) with glucose solubilizing 67% Ni, 64.8% Mn in 45 min. The overall recovery of the metals was 93.2% Li, 90.52% Co, 82.8% Ni, 77.7% Mn. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.