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| Format: | Artículo científico |
| Language: | en |
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Universidad Nacional de Colombia
2021
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| Online Access: | https://www.redalyc.org/articulo.oa?id=49671325015 https://www.redalyc.org/journal/496/49671325015/ https://www.redalyc.org/journal/496/49671325015/html/ https://www.redalyc.org/journal/496/49671325015/49671325015.epub https://www.redalyc.org/journal/496/49671325015/movil |
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Table of Contents:
- Effects of pretreatment and leaching medium on the extraction efficiency of Au and Ag from a chalcopyrite leaching by-product Marleth Roxana Garza-Román Francisco Raúl Carrillo-Pedroza Nallely Guadalupe Picazo-Rodríguez Ma de Jesús Soria-Aguilar Isaías Almaguer-Guzmán Josué Chaidez-Félix Ingeniería glycine product Cyanidation precious metals chalcopyrite leaching by Precious metals such as gold (Au) and silver (Ag) are essential to our modern society due to their unique properties, such as high conductivity and physical and chemical resistance. They are often concentrated in by-products during the extraction of base metals. In the present work, a chalcopyrite leaching residue, constituted mainly of elemental sulfur and jarosites, was subjected to different pretreatments and leached with different leaching media to recover Au and Ag. The solid residue was pretreated by desulfurization, peroxidation, desulfurization+peroxidation and leached with cyanide, cyanide+glycine, and glycine. For comparison, samples without pretreatment were also leached using the same leaching media. Changes in the mineralogical species were followed to explain the effects of pretreatment and leaching medium on the dissolution of Au and Ag. Results indicate that the highest extraction of gold and silver (Au:99.50%, Ag:46.71%) is achieved by using a combined desulfurization+peroxidation pretreatment and cyanide as leaching medium. 2021 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49671325015 https://www.redalyc.org/journal/496/49671325015/ https://www.redalyc.org/journal/496/49671325015/html/ https://www.redalyc.org/journal/496/49671325015/49671325015.epub https://www.redalyc.org/journal/496/49671325015/movil 10.7440/res64.2018.03 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.218 Vol.88