Influence of Temperature on the Formation of Ag Complexed in S2O32--O2 System

Aislinn M. Teja-Ruiz; Julio C. Juárez-Tapia; Leticia E. Hernández-Cruz; Martín Reyes-Pérez; Francisco Patiño-Cardona; Ivan A. Reyes-Dominguez; Mizraim U. Flores-Guerrero; Elia G. Palacios-Baes

doi:10.20944/preprints201610.0112.v1

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preprints.org > engineering > chemical engineering > doi: 10.20944/preprints201610.0112.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Influence of Temperature on the Formation of Ag Complexed in S₂O₃^2--O₂ System

Aislinn M. Teja-Ruiz

Julio C. Juárez-Tapia

^* ,

Leticia E. Hernández-Cruz

Martín Reyes-Pérez

Francisco Patiño-Cardona

Ivan A. Reyes-Dominguez

Mizraim U. Flores-Guerrero

Elia G. Palacios-Baes

Version 1 : Received: 25 October 2016 / Approved: 26 October 2016 / Online: 26 October 2016 (10:26:54 CEST)

A peer-reviewed article of this Preprint also exists.

Teja-Ruiz, A.M.; Juárez-Tapia, J.C.; Hernández-Cruz, L.E.; Reyes-Pérez, M.; Patiño-Cardona, F.; Reyes-Dominguez, I.A.; Flores-Guerrero, M.U.; Palacios-Beas, E.G. Influence of Temperature on the Formation of Ag Complexed in a S2O32−–O2 System. Minerals 2017, 7, 16. Teja-Ruiz, A.M.; Juárez-Tapia, J.C.; Hernández-Cruz, L.E.; Reyes-Pérez, M.; Patiño-Cardona, F.; Reyes-Dominguez, I.A.; Flores-Guerrero, M.U.; Palacios-Beas, E.G. Influence of Temperature on the Formation of Ag Complexed in a S2O32−–O2 System. Minerals 2017, 7, 16.

Abstract

Metallic elements of higher economic value occurring in the mineralogy of Zimapán are Pb, Zn, Cu and Fe, said elements are sold as concentrates, which, even after processing, generally include significant concentrations of Mo, Cd, Sb, Ag and As that could recover through different leaching methods. In this work the influence of temperature was studied in the complexation of silver in the S₂O₃^2--O₂ system. Chemical and mineralogical characterization of concentrated Zn from the state of Hidalgo confirmed the presence of the silver contained in a sulfide of silver arsenic (AgAsS₂) through the techniques of Atomic Absorption Spectrophotometry (AAS), X-Ray Diffraction (XRD) and Scanning Electron Microscopy-Energy-Dispersive X-Ray Spectroscopy (SEM-EDS). The mineralogical species identified allowed the construction mineralogical species Pourbaix diagrams in the range of 298 K to 333 K, through which the Eh-pH conditions to obtain silver in solution were determined. The formation of Ag(S₂O₃)₂^3- complex was confirmed by characterizing liquors leached using the technique Infrared Spectroscopy Fourier Transform (FTIR).

Keywords

silver; dissolution; thiosulfate; characterization; complex; temperature; arsenic

Subject

Engineering, Chemical Engineering

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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