Cargando…
Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil
Since the mid-nineteenth century, gold ores, mainly hosted in sulfides, have been processed at metallurgical plants located in Nova Lima, Brazil. The generated wastes have been accumulated over the years in tailings dams or in piles. These materials represent wasted from old circuits, as well as fro...
Autores principales: | , , , , , , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10020576/ https://www.ncbi.nlm.nih.gov/pubmed/36927783 http://dx.doi.org/10.1038/s41598-023-31133-6 |
_version_ | 1784908289412169728 |
---|---|
author | Lemos, Mariana Valente, Teresa Reis, Paula Marinho Fonseca, Rita Pantaleão, João Paulo Guabiroba, Fernanda Filho, José Gregorio Magalhães, Marcus Afonseca, Bruno Silva, Antonio Roberto Delbem, Itamar |
author_facet | Lemos, Mariana Valente, Teresa Reis, Paula Marinho Fonseca, Rita Pantaleão, João Paulo Guabiroba, Fernanda Filho, José Gregorio Magalhães, Marcus Afonseca, Bruno Silva, Antonio Roberto Delbem, Itamar |
author_sort | Lemos, Mariana |
collection | PubMed |
description | Since the mid-nineteenth century, gold ores, mainly hosted in sulfides, have been processed at metallurgical plants located in Nova Lima, Brazil. The generated wastes have been accumulated over the years in tailings dams or in piles. These materials represent wasted from old circuits, as well as from plants still in production. In this study, geochemical, mineralogical, 3D modelling, and metallurgical analyses wastes were carried out to evaluate potential reuse of these wastes. The performed characterization detected residues of very fine grain size containing sulfides and oxides. The wastes show high grades of Au hosted in different minerals. In addition to Au, samples contain S, Fe, Zn, Pb, Sc, Si, and As. The 3D modelling for spatial definition of Au was performed using ordinary kriging with dimensional variograms. The results indicated the occurrence of Au enrichment zones and allowed to reveal the most attractive tailing deposits in terms of Au content. Metallurgical tests showed recovery of 70% of Au and suggested other potential reuse of the wastes, such as aggregates for the civil construction sector and recovery of other metals. The present work highlights the importance of an integrative characterization within the scope of the circular economy and the value of tailings in the production chain of the mineral sector. |
format | Online Article Text |
id | pubmed-10020576 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-100205762023-03-18 Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil Lemos, Mariana Valente, Teresa Reis, Paula Marinho Fonseca, Rita Pantaleão, João Paulo Guabiroba, Fernanda Filho, José Gregorio Magalhães, Marcus Afonseca, Bruno Silva, Antonio Roberto Delbem, Itamar Sci Rep Article Since the mid-nineteenth century, gold ores, mainly hosted in sulfides, have been processed at metallurgical plants located in Nova Lima, Brazil. The generated wastes have been accumulated over the years in tailings dams or in piles. These materials represent wasted from old circuits, as well as from plants still in production. In this study, geochemical, mineralogical, 3D modelling, and metallurgical analyses wastes were carried out to evaluate potential reuse of these wastes. The performed characterization detected residues of very fine grain size containing sulfides and oxides. The wastes show high grades of Au hosted in different minerals. In addition to Au, samples contain S, Fe, Zn, Pb, Sc, Si, and As. The 3D modelling for spatial definition of Au was performed using ordinary kriging with dimensional variograms. The results indicated the occurrence of Au enrichment zones and allowed to reveal the most attractive tailing deposits in terms of Au content. Metallurgical tests showed recovery of 70% of Au and suggested other potential reuse of the wastes, such as aggregates for the civil construction sector and recovery of other metals. The present work highlights the importance of an integrative characterization within the scope of the circular economy and the value of tailings in the production chain of the mineral sector. Nature Publishing Group UK 2023-03-16 /pmc/articles/PMC10020576/ /pubmed/36927783 http://dx.doi.org/10.1038/s41598-023-31133-6 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Lemos, Mariana Valente, Teresa Reis, Paula Marinho Fonseca, Rita Pantaleão, João Paulo Guabiroba, Fernanda Filho, José Gregorio Magalhães, Marcus Afonseca, Bruno Silva, Antonio Roberto Delbem, Itamar Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil |
title | Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil |
title_full | Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil |
title_fullStr | Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil |
title_full_unstemmed | Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil |
title_short | Geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in Nova Lima Region, Brazil |
title_sort | geochemistry and mineralogy of auriferous tailings deposits and their potential for reuse in nova lima region, brazil |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10020576/ https://www.ncbi.nlm.nih.gov/pubmed/36927783 http://dx.doi.org/10.1038/s41598-023-31133-6 |
work_keys_str_mv | AT lemosmariana geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT valenteteresa geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT reispaulamarinho geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT fonsecarita geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT pantaleaojoaopaulo geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT guabirobafernanda geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT filhojosegregorio geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT magalhaesmarcus geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT afonsecabruno geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT silvaantonioroberto geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil AT delbemitamar geochemistryandmineralogyofauriferoustailingsdepositsandtheirpotentialforreuseinnovalimaregionbrazil |