New Evidence of the Effect of Post-Combustion During Roasting/Reduction of Nickel-Bearing Lateritic Ores
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| Published in: | Processes vol. 13, no. 8 (2025), p. 2602-2617 |
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| Other Authors: | , , , , , , |
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| 024 | 7 | |a 10.3390/pr13082602 |2 doi | |
| 035 | |a 3244058064 | ||
| 045 | 2 | |b d20250101 |b d20251231 | |
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| 100 | 1 | |a Palma Hugo Javier Angulo |u Centro de Investigaciones del Níquel “Capitán Alberto Fernández Montes de Oca” (CEDINIQ), Moa 83330, Holguín, Cuba | |
| 245 | 1 | |a New Evidence of the Effect of Post-Combustion During Roasting/Reduction of Nickel-Bearing Lateritic Ores | |
| 260 | |b MDPI AG |c 2025 | ||
| 513 | |a Journal Article | ||
| 520 | 3 | |a The roasting/reduction process is one of the fundamental stages of Caron technology, ensuring the adequate transformation of lateritic ore, with post-combustion air feed being one of the main variables considered. In this study, new evidence is presented that justifies the negative effect that post-combustion air has on Ni extractions in H-6 of the furnace. With this objective, three air feed levels were evaluated, measuring the hearth temperature from 495 °C without post-combustion to 780 °C for the maximum post-combustion level analyzed. The evaluation was carried out in a conventional multi-hearth furnace at pilot scale using atomic absorption spectrometry, XRD, SEM, and particle size analysis as the main analytical techniques for the characterization of lateritic ore before and after the reduction process. Increasing the temperature of H-6 resulted in a significant decrease in Ni extractions by 1.68% for every 57 °C increase in hearth temperature, which was due to the resulting decrease in the reaction rate constant and the significant increase in the average particle size of the reduced ore. This research emphasizes the importance of controlling post-combustion air inflow as a technological alternative to optimize Ni extraction and reduce delays in the control of diffusive processes. | |
| 651 | 4 | |a United Kingdom--UK | |
| 653 | |a Particle size | ||
| 653 | |a Combustion | ||
| 653 | |a Atomic absorption spectroscopy | ||
| 653 | |a Heart | ||
| 653 | |a Temperature | ||
| 653 | |a Reduced ores | ||
| 653 | |a Air temperature | ||
| 653 | |a Mineralogy | ||
| 653 | |a Ammonia | ||
| 653 | |a Food processing | ||
| 653 | |a Nickel | ||
| 653 | |a Scanning electron microscopy | ||
| 653 | |a Roasting | ||
| 700 | 1 | |a Toro, Norman |u Faculty of Engineering and Architecture, Universidad Arturo Prat, Iquique 1110939, Chile; notoro@unap.cl | |
| 700 | 1 | |a Castillo, Jonathan |u Departamento de Ingeniería en Metalurgia, Universidad de Atacama, Copiapó 1530000, Chile; jonathan.castillo@uda.cl | |
| 700 | 1 | |a Galleguillos Madrid Felipe M. |u Centro de Desarrollo Energético Antofagasta, Universidad de Antofagasta, Antofagasta 1270300, Chile; felipe.galleguillos.madrid@uantof.cl | |
| 700 | 1 | |a Salazar, Iván |u Departamento de Ingeniería Civil, Universidad Católica del Norte, Antofagasta 1270709, Chile; isalazar@ucn.cl | |
| 700 | 1 | |a Jamett Ingrid |u Departamento de Ingeniería Industrial, Facultad de Ingeniería, Universidad de Antofagasta, Antofagasta 1270300, Chile; ingrid.jamett@uantof.cl | |
| 700 | 1 | |a Salinas-Rodríguez Eleazar |u Academic Area of Earth Sciences and Materials, Institute of Basic Sciences and Engineering, Autonomous University of the State of Hidalgo, Pachuca 42184, Mexico; salinasr@uaeh.edu.mx | |
| 700 | 1 | |a Saldana, Manuel |u Faculty of Engineering and Architecture, Universidad Arturo Prat, Iquique 1110939, Chile; notoro@unap.cl | |
| 773 | 0 | |t Processes |g vol. 13, no. 8 (2025), p. 2602-2617 | |
| 786 | 0 | |d ProQuest |t Materials Science Database | |
| 856 | 4 | 1 | |3 Citation/Abstract |u https://www.proquest.com/docview/3244058064/abstract/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text + Graphics |u https://www.proquest.com/docview/3244058064/fulltextwithgraphics/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |
| 856 | 4 | 0 | |3 Full Text - PDF |u https://www.proquest.com/docview/3244058064/fulltextPDF/embedded/7BTGNMKEMPT1V9Z2?source=fedsrch |