Keywords
Hydrometallurgy
Litharge recovery
Acid leaching
mining waste management
Circular economy Hidrometalurgia
Recuperación de litargirio
Lixiviación ácida,
Gestión de residuos mineros
Economía circular
Litharge recovery
Acid leaching
mining waste management
Circular economy Hidrometalurgia
Recuperación de litargirio
Lixiviación ácida,
Gestión de residuos mineros
Economía circular
How to Cite
Palacio Morales, S., Guzmán Cardona, J. M., Palacio Arango, J. M., & Arboleda, A. F. (2024). Recovery of litharge from fire assay process residues in the quantification of metals. Vía Innova, 11(1), 231–253. https://doi.org/10.23850/2422068X.6823
Abstract
This research aims to evaluate lead recovery from cupels used in the fire assay method at the Instituto de Minerales CIMEX, Universidad Nacional de Colombia. A physicochemical characterization analysis was performed using X-ray Fluorescence Spectrometry (XRF) and lead chemical quantification through Atomic Absorption Spectrophotometry (AAS), determining that the average lead content in the cupels is 64.25%. The experimentation was conducted through a leaching process, employing a buffer solution composed of citric acid and its conjugate base, sodium citrate. It was determined that the most favorable conditions for the process are a pH of 5, a leaching time of 2 hours, and a sample weight of 6 grams, achieving a liquor with approximately 49.6% lead content. Subsequently, precipitation was carried out using 26% ammonium hydroxide, followed by drying and calcination to convert the obtained lead hydroxide into its reduced form (litharge). It was found that the overall yield of the litharge production process is 49.5%, and up to 96.7% of the initial Pb present in the cupel can be recovered. At the CIMEX Minerals Institute alone, up to 869.8 kg of litharge could be recovered annually and reintegrated into the process, which represents a transcendental value on an industrial scale for the sustainability of the mining- metallurgical sector and the treatment of these wastes.
References
Chucos, R., & Espinoza, Y. (2016). Influencia del pH y la concentración del ácido cítrico en la recu- peración de cobre mediante lixiviación por agitación de minerales oxidados de tipo cuprita.
Constable, P. D. (2014). Acid-base assessment: when and how to apply the Henderson-Hasselbalch equation and strong ion difference theory. Veterinary Clinics: Food Animal Practice, 30(2), 295-316.
Constanza Villa, L., Saldarriaga Agudelo, W., & Ricardo Rojas, N. (2018). Estudio termodinámico de la lixiviación de plomo reciclado con citrato de sodio. 9(2).
Del Carmen, R. R. S., & Graciela, R. C. (2015). Microescala en química analítica
Eleanor, F. Z. M. (2020, 8 enero). Evaluación del proceso de recuperación de sales de plomo de copelas usadas en la industria minera.
Estévez Alvarez, J. R., Montero, A. A., Jiménez, N. H., Muñiz, U. O., Padilla, A. R., Molina, R. J., & Quicute de Vera, S. (2001). Nuclear and related analytical methods applied to the determi- nation of Cr, Ni, Cu, Zn, Cd and Pb in a red ferralitic soil and Sorghum samples.
Journal of Radioanalytical and Nuclear Chemistry, 247, 479-486.
Hardie, M. (2024). Buffers Through Time: How Buffers Progress Alongside Research. Article. Gol- Bio.
Herrera, D. (2016). Hidrometalurgia química e ingeniería. Ediciones Gráficas EIRL. Instituto de ingenieros de minas del Perú.
Hoffman, E. L., Clark, J. R., & Yeager, J. R. (1998). Gold analysis-fire assaying and alternative me- thods. Exploration and Mining Geology, 7(1-2), 155-160.
Kim, W. J., Seo, S., Lee, S. I., Kim, D. W., & Kim, M. J. (2021). A study on pyro-hydrometallurgical process for selective recovery of Pb, Sn and Sb from lead dross. Journal of Hazardous Mate- rials, 417, 126071.
Magalhães, F. B., de Freitas Carvalho, C., Corrêa Netto Carvalho, E. L., Yoshida, M. I., & Gouvêa dos-Santos, C. (2012). Rendering wastes obtained from gold analysis by the lead-fusion fi- re-assay method non-hazardous. Journal of Environmental Management, 110, 110–115.
Ma, E. (2019). Recovery of waste printed circuit boards through pyrometallurgy. Electronic waste management and treatment technology, 247-267.
Mihajlović, A., Anč‘ić, Z., Korać, M., & Kamberović, Ž. (2014). Positive synergistic effect of the reuse and the treatment of hazardous waste on pyrometallurgical process of lead recovery from waste lead-acid batteries. Metallurgical and Materials Engineering, 20(3), 171-182.
Mosquera, J. T., & Bautista, F. M. (2005). Exposición ocupacional a plomo: aspectos toxicológicos. Avances en enfermería, 23(1), 31-44.
Quiroz, S. M. (2024). Termodinámica. Diagramas de Ellingham. Scribd.
Raghavan, R., Mohanan, P., & Swarnkar, S. (2000). Hydrometallurgical processing of lead-bearing materials for the recovery of lead and silver as lead concentrate and lead metal. Hydrome- tallurgy, 58(2), 103-116.
Restrepo, O. J., Campos, A., & Escobar, S. (2019). Notas de clase de la asignatura: Metalurgia Ex- tractiva.
Rivera Blas, I. R., & Ybañez Ordonio, C. J. (2016). Influencia de la concentración del ácido cítrico y pH en la lixiviación de copelas usadas, la densidad de corriente y distancia de electrodos en la electrodeposición del plomo lixiviado.
Rosell Gutiérrez, M. D. F., & Calderón Velasco, G. E. (2014). Recuperación de plomo, a partir de copelas empleadas en el proceso de análisis de oro por el método Fire Assay, en la Empresa Century Mining Perú SAC y escalamiento del proceso.
Ruşen, A., Sunkar, A., & Topkaya, Y. (2008). Zinc and lead extraction from Çinkur leach residues by using hydrometallurgical method. Hydrometallurgy, 93(1-2), 45-50.
Soundarrajan, C., Sivasankar, A., Maruthamuthu, S., & Veluchamy, A. (2012). Improved lead re- covery and sulphate removal from used lead acid battery through Electrokinetic technique. Journal of Hazardous Materials, 217-218, 452-456. StudySmarte. (2024). Principio de Le Chatelier: Ley y factores.
Universidad Iberoamericana. (2003). Tablas de constantes de química analítica.
Zapata, N., Copete, H., López, M. E., & Chanci, R. D. (2015). Comparación entre el ensayo al fuego y conteo de partículas en la determinación del tenor de oro aluvial. Revista Colombiana de Materiales, 6, 69-78.
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