Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black mass
The overall performance of hydrometallurgical leaching operations can be limited by the presence of various types of insoluble layers coating the surface of the treated solids. The attrition-leaching process, which is carried out in a stirred reactor containing millimetric beads, can partially overc...
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Académie des sciences
2024-08-01
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| Series: | Comptes Rendus. Chimie |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.325/ |
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| author | Laskar, Clément Dakkoune, Amine Julcour, Carine Bourgeois, Florent Biscans, Béatrice Cassayre, Laurent |
| author_facet | Laskar, Clément Dakkoune, Amine Julcour, Carine Bourgeois, Florent Biscans, Béatrice Cassayre, Laurent |
| author_sort | Laskar, Clément |
| collection | DOAJ |
| description | The overall performance of hydrometallurgical leaching operations can be limited by the presence of various types of insoluble layers coating the surface of the treated solids. The attrition-leaching process, which is carried out in a stirred reactor containing millimetric beads, can partially overcome this problem and increase the extraction yield by physically abrading the layers. Through a comparative analysis of three different systems, this work develops a constructive discussion of the attrition-leaching process. The systems of interest are (i) mineral carbonation of ferronickel slag, (ii) dissolution of a chalcopyrite concentrate in sulfuric media, and (iii) dissolution of spent Ni-MH battery black mass powder in sulfuric media. In the case of ferronickel slag and chalcopyrite, the reaction yields are improved by a factor of 10 with attrition-leaching compared to leaching only, while there is no yield improvement in the case of Ni-MH black mass batteries, highlighting that the layers observed on the grain surface do not interfere with the leaching reaction. Despite very different system chemistries and conditions, the particle size distribution is similar for the three materials, showing that particles’ behavior is controlled by the attrition environment. This work offers a simple setup for investigating the potential improvements of the kinetics and yields of leaching reaction due to concomitant attrition. It also allows a fundamental study of the physico-chemical processes involved, by testing whether a leaching reaction is hindered by an in situ passivation at the surface of a material. |
| format | Article |
| id | doaj-art-0320d407542d41da834decca5b94c456 |
| institution | Kabale University |
| issn | 1878-1543 |
| language | English |
| publishDate | 2024-08-01 |
| publisher | Académie des sciences |
| record_format | Article |
| series | Comptes Rendus. Chimie |
| spelling | doaj-art-0320d407542d41da834decca5b94c4562025-02-07T13:41:01ZengAcadémie des sciencesComptes Rendus. Chimie1878-15432024-08-0111610.5802/crchim.32510.5802/crchim.325Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black massLaskar, Clément0https://orcid.org/0000-0002-3228-6686Dakkoune, Amine1https://orcid.org/0000-0002-6580-0848Julcour, Carine2https://orcid.org/0000-0002-9364-4862Bourgeois, Florent3https://orcid.org/0000-0002-5549-7937 Biscans, Béatrice4https://orcid.org/0000-0002-2663-4357Cassayre, Laurent5https://orcid.org/0000-0001-6876-6086Laboratoire de Génie Chimique (LGC), Université de Toulouse, CNRS UMR 5563, INP, UPS, 4, Allée Emile Monso, 31400 Toulouse, FranceLaboratoire de Génie Chimique (LGC), Université de Toulouse, CNRS UMR 5563, INP, UPS, 4, Allée Emile Monso, 31400 Toulouse, FranceLaboratoire de Génie Chimique (LGC), Université de Toulouse, CNRS UMR 5563, INP, UPS, 4, Allée Emile Monso, 31400 Toulouse, FranceLaboratoire de Génie Chimique (LGC), Université de Toulouse, CNRS UMR 5563, INP, UPS, 4, Allée Emile Monso, 31400 Toulouse, FranceLaboratoire de Génie Chimique (LGC), Université de Toulouse, CNRS UMR 5563, INP, UPS, 4, Allée Emile Monso, 31400 Toulouse, FranceLaboratoire de Génie Chimique (LGC), Université de Toulouse, CNRS UMR 5563, INP, UPS, 4, Allée Emile Monso, 31400 Toulouse, FranceThe overall performance of hydrometallurgical leaching operations can be limited by the presence of various types of insoluble layers coating the surface of the treated solids. The attrition-leaching process, which is carried out in a stirred reactor containing millimetric beads, can partially overcome this problem and increase the extraction yield by physically abrading the layers. Through a comparative analysis of three different systems, this work develops a constructive discussion of the attrition-leaching process. The systems of interest are (i) mineral carbonation of ferronickel slag, (ii) dissolution of a chalcopyrite concentrate in sulfuric media, and (iii) dissolution of spent Ni-MH battery black mass powder in sulfuric media. In the case of ferronickel slag and chalcopyrite, the reaction yields are improved by a factor of 10 with attrition-leaching compared to leaching only, while there is no yield improvement in the case of Ni-MH black mass batteries, highlighting that the layers observed on the grain surface do not interfere with the leaching reaction. Despite very different system chemistries and conditions, the particle size distribution is similar for the three materials, showing that particles’ behavior is controlled by the attrition environment. This work offers a simple setup for investigating the potential improvements of the kinetics and yields of leaching reaction due to concomitant attrition. It also allows a fundamental study of the physico-chemical processes involved, by testing whether a leaching reaction is hindered by an in situ passivation at the surface of a material.https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.325/Mechano-chemical processingLeachingPassivation layerAqueous mineral carbonationFerronickel slagsChalcopyriteNickel metal Ni-MH hydride batteries |
| spellingShingle | Laskar, Clément Dakkoune, Amine Julcour, Carine Bourgeois, Florent Biscans, Béatrice Cassayre, Laurent Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black mass Comptes Rendus. Chimie Mechano-chemical processing Leaching Passivation layer Aqueous mineral carbonation Ferronickel slags Chalcopyrite Nickel metal Ni-MH hydride batteries |
| title | Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black mass |
| title_full | Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black mass |
| title_fullStr | Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black mass |
| title_full_unstemmed | Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black mass |
| title_short | Case-based analysis of mechanically-assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes: application in chalcopyrite, ferronickel slag, and Ni-MH black mass |
| title_sort | case based analysis of mechanically assisted leaching for hydrometallurgical extraction of critical metals from ores and wastes application in chalcopyrite ferronickel slag and ni mh black mass |
| topic | Mechano-chemical processing Leaching Passivation layer Aqueous mineral carbonation Ferronickel slags Chalcopyrite Nickel metal Ni-MH hydride batteries |
| url | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.325/ |
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