Open AccessUse of the System S2o3 (2-) -O2 for the Leaching of Precious Metals Contained in a Mineral From Molango in the State of Hidalgo, Mexico
Author(s) -
Edmundo Roldán-Contreras,
Juan Hernández-Ávila,
Eduardo CerecedoSáenz,
María Isabel Reyes-Valderrama,
Eleazar SalinasRodríguez
Publication year - 2018
Publication title -
european scientific journal
Language(s) - English
Resource type - Journals
eISSN - 1857-7881
pISSN - 1857-7431
DOI - 10.19044/esj.2018.v14n3p48
Subject(s) - leaching (pedology) , palladium , reagent , inductively coupled plasma , platinum , scanning electron microscope , chemistry , mineral , metallurgy , mineralogy , mass spectrometry , precious metal , environmental chemistry , geology , materials science , metal , catalysis , plasma , biochemistry , physics , chromatography , quantum mechanics , soil science , composite material , soil water
The newer tendencies of research, related with the leaching of precious metals, involves the use of non toxic reagents that allows the leaching of a mineral of sedimentary origin using the system S2 - O3 2- - O2. Prior to thisprocess, the mineral was characterized by Scanning Electron Microscopy (SEM) in conjunction with Energy Dispersive Spectrometry of X – rays (EDS), X- ray mapping. Finally, the chemical composition was executed by Inductively Coupled Plasma Spectrometry (ICP). According to the results obtained, it was possible to determine that the mineral studied has adequate contents of gold, palladium, silver, and platinum. And after the leaching process, it could be possible to leach the gold and palladium that it contains, getting recoveries of 90% and 85 %, respectively. In the case of silver, a redissolution or precipitation could occur during the first minutes of reaction.