Ultrasound desquamation coupled with roasting transformation and magnetic separation for recycling cobalt, lithium and graphite from spent lithium cobaltate batteries
The development of electronics industries has produced a large number of spent lithium cobaltate batteries (LCBs), whose effective recycling can avoid environmental pollution and save valuable resources. At present, research on the recycling of spent LCBs mainly focuses on the pyrometallurgical and...
| Autores: | , , , , , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2024 |
| País: | España |
| Recursos: | Universidad Autónoma de Madrid |
| Repositório: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Idioma: | inglês |
| OAI Identifier: | oai:repositorio.uam.es:10486/718834 |
| Acesso em linha: | http://hdl.handle.net/10486/718834 https://dx.doi.org/10.1016/j.mtcomm.2024.110981 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Carbothermic reduction dense separation magnetic separation spent lithium cobaltate batteries (LCBs) Química |
| Resumo: | The development of electronics industries has produced a large number of spent lithium cobaltate batteries (LCBs), whose effective recycling can avoid environmental pollution and save valuable resources. At present, research on the recycling of spent LCBs mainly focuses on the pyrometallurgical and wet hydrometallurgical recycling of metals, while little research was conducted on the recycling of full parts and compositions. In this paper, by coupling thermal and ultrasonic treatment, sieving, sorting, carbothermic reduction, magnetic separation, filtration and concentration, spent LCBs were used to obtain plastic, printed circuit board, copper, aluminum, lithium carbonate, cobalt and graphite. Ultrasonic waves were used to peel off the electrode powders from electrodes foils, and the exfoliation rates of anode and cathode powders can reach 92.9 % and 97.1 %, respectively. The Co and Li were recovered by carbothermic reduction combined with wet magnetic separation, filtration and concentration, and recovery ratios reached 86.5 % and 81.1 %, respectively, with the molar ratio of lithium cobaltate and graphite at 6:18.3. The results of this study prove the possibility of recycling metal and graphite from spent LCBs with no additives |
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