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A Study on the Effect of Particle Size on Li-Ion Battery Recycling via Flotation and Perspectives on Selective Flocculation

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Rinne, Tommi
dc.contributor.author Araya-Gómez, Natalia
dc.contributor.author Serna-Guerrero, Rodrigo
dc.date.accessioned 2023-03-15T07:10:32Z
dc.date.available 2023-03-15T07:10:32Z
dc.date.issued 2023-01-17
dc.identifier.citation Rinne , T , Araya-Gómez , N & Serna-Guerrero , R 2023 , ' A Study on the Effect of Particle Size on Li-Ion Battery Recycling via Flotation and Perspectives on Selective Flocculation ' , Batteries , vol. 9 , no. 2 , 68 . https://doi.org/10.3390/batteries9020068 en
dc.identifier.issn 2313-0105
dc.identifier.other PURE UUID: ee0c091e-c4ea-417e-a443-bd911a1b1e5f
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/ee0c091e-c4ea-417e-a443-bd911a1b1e5f
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85148621043&partnerID=8YFLogxK
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/102600872/CHEM_Rinne_et_al_A_Study_on_the_Effect_2023_Batteries.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/120107
dc.description Funding Information: This research was funded by the Business Finland BATCircle2.0 project, grant number 44886/31/2020. T.R. thanks the Technology Industries of Finland Centennial Foundation (Steel and Metal Producers Fund) for a Doctoral studies scholarship. Publisher Copyright: © 2023 by the authors.
dc.description.abstract The recycling of active materials from Li-ion batteries (LIBs) via froth flotation has gained interest recently. To date, recycled graphite has not been pure enough for direct reuse in LIB manufacturing. The present work studied the effect of particle sizes on the grade of recycled graphite. Furthermore, selective flocculation is proposed as a novel approach to control particle sizes and thus improve graphite grade by preventing the entrainment of cathode components. Zeta potential and particle size measurements were performed to find an optimal pH for electrically selective flocculation and to study the interaction of flocculants, respectively. Batch flotation experiments were performed to investigate the effect of particle size on the purity of the recovered graphite. Results suggested that, in the absence of ultrafine fine particles, battery-grade graphite of 99.4% purity could be recovered. In the presence of ultrafine particles, a grade of 98.2% was observed. Flocculating the ultrafine feed increased thegrade to 98.4%, although a drop in recovery was observed. By applying a dispersant in addition to a flocculant, the recovery could be increased while maintaining a 98.4% grade. Branched flocculants provided improved selectivity over linear flocculants. The results suggest that particle size needs to be controlled for battery-grade graphite to be recovered. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher MDPI AG
dc.relation.ispartofseries Batteries en
dc.relation.ispartofseries Volume 9, issue 2 en
dc.rights openAccess en
dc.title A Study on the Effect of Particle Size on Li-Ion Battery Recycling via Flotation and Perspectives on Selective Flocculation en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Chemical and Metallurgical Engineering
dc.subject.keyword direct recycling
dc.subject.keyword froth flotation
dc.subject.keyword lithium-ion batteries
dc.subject.keyword selective flocculation
dc.identifier.urn URN:NBN:fi:aalto-202303152433
dc.identifier.doi 10.3390/batteries9020068
dc.type.version publishedVersion

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