Lithium slag leach solution refining by hydroxide precipitation
Lithium-ion batteries contain many of critically important metals and their effective recycling is key to the EU’s sustainable development. In the past, only metals such as Co, Ni, and Cu were recycled by pyrometallurgy, while Li and Al were concentrated in the slags and not further processed. The n...
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University of Belgrade, Technical Faculty, Bor
2023-01-01
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| Series: | Journal of Mining and Metallurgy. Section B: Metallurgy |
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| Online Access: | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300042K.pdf |
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| author | Klimko J. Takacova Z. Marcinov V. Piroskova J. Vindt T. Liptai P. Orac D. |
| author_facet | Klimko J. Takacova Z. Marcinov V. Piroskova J. Vindt T. Liptai P. Orac D. |
| author_sort | Klimko J. |
| collection | DOAJ |
| description | Lithium-ion batteries contain many of critically important metals and their effective recycling is key to the EU’s sustainable development. In the past, only metals such as Co, Ni, and Cu were recycled by pyrometallurgy, while Li and Al were concentrated in the slags and not further processed. The novel approach of pyrometallurgical treatment of the black mass offers the possibility of further hydrometallurgical utilization of the slags. This paper examines the refining of the solution obtained by leaching the slag in sulfuric acid. The most valuable element in the leach solution is Li, but it also contains Al, Si, Co, Mn, Ni and Cu, which must be removed before high-purity Li recovery is possible. Purification is achieved by adjusting the pH by adding NaOH. The results confirm that Al and Mn can be removed by 100%, Si by 93.56%, Cu by 86.36% and Cu by 61.75%. The results also confirmed that solution refining by the adding NaOH causes lithium losses ranging from 10% at pH 7 to 28% at pH 12. Therefore, it is suggested that further solution refining methods should be combined before precipitating pure Li2CO3 with minimal losses. |
| format | Article |
| id | doaj-art-58475a2752c84e6ca12c3ac960f5938b |
| institution | Kabale University |
| issn | 1450-5339 2217-7175 |
| language | English |
| publishDate | 2023-01-01 |
| publisher | University of Belgrade, Technical Faculty, Bor |
| record_format | Article |
| series | Journal of Mining and Metallurgy. Section B: Metallurgy |
| spelling | doaj-art-58475a2752c84e6ca12c3ac960f5938b2025-02-02T05:24:29ZengUniversity of Belgrade, Technical Faculty, BorJournal of Mining and Metallurgy. Section B: Metallurgy1450-53392217-71752023-01-0159348949610.2298/JMMB231020042K1450-53392300042KLithium slag leach solution refining by hydroxide precipitationKlimko J.0Takacova Z.1Marcinov V.2Piroskova J.3Vindt T.4Liptai P.5Orac D.6Technical University of Košice, Faculty of Materials, Metallurgy and Recycling, Institute of Recycling Technologies, Kosice, SlovakiaTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Institute of Recycling Technologies, Kosice, SlovakiaTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Institute of Recycling Technologies, Kosice, SlovakiaTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Institute of Recycling Technologies, Kosice, SlovakiaTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Institute of Recycling Technologies, Kosice, SlovakiaTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Institute of Recycling Technologies, Kosice, SlovakiaTechnical University of Košice, Faculty of Materials, Metallurgy and Recycling, Institute of Recycling Technologies, Kosice, SlovakiaLithium-ion batteries contain many of critically important metals and their effective recycling is key to the EU’s sustainable development. In the past, only metals such as Co, Ni, and Cu were recycled by pyrometallurgy, while Li and Al were concentrated in the slags and not further processed. The novel approach of pyrometallurgical treatment of the black mass offers the possibility of further hydrometallurgical utilization of the slags. This paper examines the refining of the solution obtained by leaching the slag in sulfuric acid. The most valuable element in the leach solution is Li, but it also contains Al, Si, Co, Mn, Ni and Cu, which must be removed before high-purity Li recovery is possible. Purification is achieved by adjusting the pH by adding NaOH. The results confirm that Al and Mn can be removed by 100%, Si by 93.56%, Cu by 86.36% and Cu by 61.75%. The results also confirmed that solution refining by the adding NaOH causes lithium losses ranging from 10% at pH 7 to 28% at pH 12. Therefore, it is suggested that further solution refining methods should be combined before precipitating pure Li2CO3 with minimal losses.https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300042K.pdflithium-ion batteryrecyclinghydrometallurgyprecipitationhydroxidelithium hydroxide |
| spellingShingle | Klimko J. Takacova Z. Marcinov V. Piroskova J. Vindt T. Liptai P. Orac D. Lithium slag leach solution refining by hydroxide precipitation Journal of Mining and Metallurgy. Section B: Metallurgy lithium-ion battery recycling hydrometallurgy precipitation hydroxide lithium hydroxide |
| title | Lithium slag leach solution refining by hydroxide precipitation |
| title_full | Lithium slag leach solution refining by hydroxide precipitation |
| title_fullStr | Lithium slag leach solution refining by hydroxide precipitation |
| title_full_unstemmed | Lithium slag leach solution refining by hydroxide precipitation |
| title_short | Lithium slag leach solution refining by hydroxide precipitation |
| title_sort | lithium slag leach solution refining by hydroxide precipitation |
| topic | lithium-ion battery recycling hydrometallurgy precipitation hydroxide lithium hydroxide |
| url | https://doiserbia.nb.rs/img/doi/1450-5339/2023/1450-53392300042K.pdf |
| work_keys_str_mv | AT klimkoj lithiumslagleachsolutionrefiningbyhydroxideprecipitation AT takacovaz lithiumslagleachsolutionrefiningbyhydroxideprecipitation AT marcinovv lithiumslagleachsolutionrefiningbyhydroxideprecipitation AT piroskovaj lithiumslagleachsolutionrefiningbyhydroxideprecipitation AT vindtt lithiumslagleachsolutionrefiningbyhydroxideprecipitation AT liptaip lithiumslagleachsolutionrefiningbyhydroxideprecipitation AT oracd lithiumslagleachsolutionrefiningbyhydroxideprecipitation |