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This study investigated the effect of flux type and amounts on recovery behavior of aluminum alloy during the melting process of Al can scrap. The heat treatment was conducted to remove the coating layer on the surface of can scrap at 500°C for 30 min. The molten metal treatment of the scrap was performed at 750°C in a high-frequency induction furnace with different flux types and amounts. It was observed that the optimum condition for recovery of Al alloy was to add about 3 wt.% flux with a salt and MgCl2 mixing ratio of 70:30 during melting process. The mechanical properties of recovered Al alloy were about 254.8 MPa, which is similar to that of the virgin Al5083 alloy.

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Authors and Affiliations

Chulwoong Han

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ORCID:

Yong Hwan Kim

e-mail:

ORCID:

Dae Geun Kim

e-mail:

ORCID:

Man Seung Lee

e-mail:

ORCID:

Korea Institute of Industrial Technology, Research Institute of Advanced Manufacturing & Mat erials, 156 Gaetbeol Rd., Yeonsu-gu, Incheon,406-840, Korea
Institute for Advanced Engineering Materials Science and Chemical Engineering Center , Korea
Mokpo National University, Department of Advanced Materials Science and Engineering, Korea

Study on Recovery of Valuable Metals in Spent Lithium-Ion Batteries by Al2O3-SiO2-CaO-Fe2O3 Slag System

Tae Boong Moon Chulwoong Han Soong Keun Hyun Sung Cheol Park Seong Ho Son Man Seung Lee Yong Hwan Kim

Archives of Metallurgy and Materials | 2021 | vol. 66 | No 4 | 983-986 | DOI: 10.24425/amm.2021.136410

Keywords Spent lithium-ion battery Smelting Al2O3-SiO2-CaO-Fe2O3 recovery slag

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Abstract

This study investigated the recovery behavior of valuable metals (Co, Ni, Cu and Mn) in spent lithium ion-batteries based on Al2O3-SiO2-CaO-Fe2O3 slag system via DC submerged arc smelting process. The valuable metals were recovered by 93.9% at the 1250℃ for 30 min on the 20Al2O3-40SiO2-20CaO-20Fe2O3 (mass%) slag system. From the analysis of the slag by Fourier-transform infrared spectroscopy, it was considered that Fe2O3 and Al2O3 acted as basic oxides to depolymerize SiO4 and AlO4 under the addition of critical 20 mass% Fe2O3 in 20Al2O3-40SiO2-CaO-Fe2O3 (CaO + Fe2O3 = 40 mass%). In addition, it was observed that the addition of Fe2O3 ranging between 20 and 30 mass% lowers the melting point of the slag system.

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Authors and Affiliations

Tae Boong Moon

1 2

e-mail:

ORCID:

Chulwoong Han

e-mail:

ORCID:

Soong Keun Hyun

e-mail:

ORCID:

Sung Cheol Park

e-mail:

ORCID:

Seong Ho Son

e-mail:

ORCID:

Man Seung Lee

e-mail:

ORCID:

Yong Hwan Kim

e-mail:

ORCID:

Inha University, Department of Materials Science and Engineering, Incheon, Korea
Korea Institute of Industrial Technology, Research Institute of Advanced Manufacturing and Materials Technology Incheon, 156, Gaetbeol Rd., Yeonsu-gu, Incheon, 406-840, Korea
Mokpo National University, Department of Materials Science and Engineering Mokpo, Korea

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Recovery Of Valuable Metals In Tin-Based Anodic Slimes By Carbothermic Reaction

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Effect of Flux on the Recovery Behavior of Valuable Metals during the Melting Process of Aluminum Can Scrap

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Study on Recovery of Valuable Metals in Spent Lithium-Ion Batteries by Al2O3-SiO2-CaO-Fe2O3 Slag System

Abstract

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Authors and Affiliations