Hydrometallurgy process for the recovery of valuable metals from LiNi0.8Co0.15Al0.05O2 cathode materials

Quan Li; Ka Yip Fung; Ka Ming Ng

doi:10.1007/s42452-019-0705-z

Hydrometallurgy process for the recovery of valuable metals from LiNi_0.8Co_0.15Al_0.05O₂ cathode materials

Quan Li
, Ka Yip Fung
, Ka Ming Ng^*

^*Corresponding author for this work

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Journal Article › peer-review

5 Citations (Scopus)

Abstract

A hydrometallury process was developed to recover the valuable metals from LiNi_0.8Co_0.15Al_0.05O₂ cathode materials. In step 1, lithium and aluminum were selectively dissolved by oxalic acid. Utilizing Na₂SO₃ as the reducing reagent, the reaction was significantly accelerated. The aluminum and lithium in the liquid stream were recovered by chemical precipitation in steps 2 and 3, using KOH and K₂CO₃ as precipitants, respectively. The mixture of solid Ni and Co oxalates from step 1 was converted to sulfates through acid baking. After dissolution in water, cobalt was recovered as Co₂O₃ after oxidation and nickel stayed in the solution as NiSO₄.

Original language	English
Article number	690
Journal	SN Applied Sciences
Volume	1
Issue number	7
DOIs	https://doi.org/10.1007/s42452-019-0705-z
Publication status	Published - Jul 2019

Bibliographical note

Publisher Copyright:
© 2019, Springer Nature Switzerland AG.

Keywords

Acid baking
Metal recovery
Oxalic acid
Selective dissolution

Access to Document

10.1007/s42452-019-0705-z

Cite this

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title = "Hydrometallurgy process for the recovery of valuable metals from LiNi0.8Co0.15Al0.05O2 cathode materials",

abstract = "A hydrometallury process was developed to recover the valuable metals from LiNi0.8Co0.15Al0.05O2 cathode materials. In step 1, lithium and aluminum were selectively dissolved by oxalic acid. Utilizing Na2SO3 as the reducing reagent, the reaction was significantly accelerated. The aluminum and lithium in the liquid stream were recovered by chemical precipitation in steps 2 and 3, using KOH and K2CO3 as precipitants, respectively. The mixture of solid Ni and Co oxalates from step 1 was converted to sulfates through acid baking. After dissolution in water, cobalt was recovered as Co2O3 after oxidation and nickel stayed in the solution as NiSO4.",

keywords = "Acid baking, Metal recovery, Oxalic acid, Selective dissolution",

author = "Quan Li and Fung, \{Ka Yip\} and Ng, \{Ka Ming\}",

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T1 - Hydrometallurgy process for the recovery of valuable metals from LiNi0.8Co0.15Al0.05O2 cathode materials

AU - Li, Quan

AU - Fung, Ka Yip

AU - Ng, Ka Ming

PY - 2019/7

Y1 - 2019/7

N2 - A hydrometallury process was developed to recover the valuable metals from LiNi0.8Co0.15Al0.05O2 cathode materials. In step 1, lithium and aluminum were selectively dissolved by oxalic acid. Utilizing Na2SO3 as the reducing reagent, the reaction was significantly accelerated. The aluminum and lithium in the liquid stream were recovered by chemical precipitation in steps 2 and 3, using KOH and K2CO3 as precipitants, respectively. The mixture of solid Ni and Co oxalates from step 1 was converted to sulfates through acid baking. After dissolution in water, cobalt was recovered as Co2O3 after oxidation and nickel stayed in the solution as NiSO4.

AB - A hydrometallury process was developed to recover the valuable metals from LiNi0.8Co0.15Al0.05O2 cathode materials. In step 1, lithium and aluminum were selectively dissolved by oxalic acid. Utilizing Na2SO3 as the reducing reagent, the reaction was significantly accelerated. The aluminum and lithium in the liquid stream were recovered by chemical precipitation in steps 2 and 3, using KOH and K2CO3 as precipitants, respectively. The mixture of solid Ni and Co oxalates from step 1 was converted to sulfates through acid baking. After dissolution in water, cobalt was recovered as Co2O3 after oxidation and nickel stayed in the solution as NiSO4.

KW - Acid baking

KW - Metal recovery

KW - Oxalic acid

KW - Selective dissolution

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DO - 10.1007/s42452-019-0705-z

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