Optimization of Effective Parameters on Acidic Leaching of Valuable Metals from Spent Li-Ion Batteries

Document Type : Research - Paper

Authors

1 M.Sc Student, Dept. of Mining Engineering, Imam Khomeini International University, Qazvin, Iran

2 Associate Professor, Dept. of Mining Engineering, Imam Khomeini International University, Qazvin, Iran

3 Assistant Professor, Dept. of Mining Engineering, Vali-e-Asr University of Rafsanjan, Kerman, Iran

Abstract

The spent lithium-ion batteries contain valuable metals (lithium, cobalt, manganese and nickel) and organic compounds that recycle of these batteries, means recovery and production of valuable metals from huge secondary sources as well as environmental requirements. In this paper, hydrometallurgy technique was used in two steps (pretreatment, leaching of valuable metals) to dissolve the metals from spent lithium-ion batteries. In the pretreatment step, neutralized, fragmentation and separation of the various compound of spent lithium-ion batteries were investigated. Then, the dissolution of valuable metals from spent lithium-ion batteries using acetic acid (organic acid) and sulfuric acid (mineral acid) was investigated as the dissolution agent and hydrogen acid as the reducing agent. Other studied parameters are used to optimize the experimental conditions include acid concentration, hydrogen peroxide concentration, solid to liquid ratio, time and temperature. Leaching efficiency of lithium, cobalt, manganese and nickel metals under optimum test conditions in the presence of 2 M sulfuric acid, 60 °C, 80 min, 4% v/v hydrogen peroxide, and solid to liquid ratio of 30 g/L, respectively, %98.40, %99, %97.53 and %96.78 were obtained.

Keywords

References

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Journal of Mineral Resources Engineering
Volume 5, Issue 3 - Serial Number 17
October 2020
Pages 127-145

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History

  • Receive Date: 29 October 2019
  • Revise Date: 22 June 2020
  • Accept Date: 23 June 2020

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