Determinación del sistema base para el análisis de recuperación de plata mediante el ion tiosulfato empleando reactivos de alta pureza: nitrato de plata, cloruro de plata y granalla metálica

Gabriel Cisneros-Flores; Aislinn M, Teja Ruíz; Julio C. Juárez Tapia; Erick de J. Muñoz Hernández; Martín Reyes Pérez; Felipe Legorreta García

doi:10.29057/aactm.v9i9.9064

Gabriel Cisneros-Flores Universidad Autónoma del Estado de Hidalgo https://orcid.org/0000-0002-5488-9007
Aislinn M, Teja Ruíz Autonomous University of the State of Hidalgo https://orcid.org/0000-0002-9503-7599
Julio C. Juárez Tapia Autonomous University of the State of Hidalgo https://orcid.org/0000-0001-7058-1670
Erick de J. Muñoz Hernández Autonomous University of the State of Hidalgo https://orcid.org/0000-0002-9866-5718
Martín Reyes Pérez Autonomous University of the State of Hidalgo https://orcid.org/0000-0003-3843-2397
Felipe Legorreta García Autonomous University of the State of Hidalgo https://orcid.org/0000-0001-6968-199X

DOI: https://doi.org/10.29057/aactm.v9i9.9064

Keywords: Thiosulfate, Silver leaching, Particle size, Solubility, silver recovery

Abstract

During the last decades, the study of thiosulfate as an alternative to cyanide in the recovery process of precious metals has become very relevant due to its sustainability. In the present work, the behavior of high purity reagents: metal shot, silver nitrate and silver chloride was analyzed in order to determine a base system that could serve as a starting point for future research using thiosulfate as a complexing agent. X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) characterized the reagents. The best results were obtained using metal shot generating 6.4% silver recovered using the following experimental conditions: solution volume = 0. 5 L, [S₂O₃^2-] =10 g∙L^-1, [NaOH] =0.01mol∙L^-1, [Ag] = 2 g∙L^-1, stirring speed= 700 min^-1, temperature = 298 K, pH= 10, Partial Pressure of O₂= 1 atm, reaction time= 24 h.

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