Study of Copper Leaching from Mining Waste in Acidic Media, at Ambient Temperature and Atmospheric Pressure
| Autor: | Francisco Javier Linares del Río, Jorge Suárez-Macías, Juan María Terrones-Saeta, Francisco Antonio Corpas-Iglesias |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:QE351-399.2
hydrometallurgy chemistry.chemical_element Environmental pollution Zinc 010501 environmental sciences 010502 geochemistry & geophysics 01 natural sciences mining waste Metal sustainability ICP-MS Leachate 0105 earth and related environmental sciences granite leachate lcsh:Mineralogy Hydrometallurgy Atmospheric pressure polymetallic sulphides Geology Geotechnical Engineering and Engineering Geology Pulp and paper industry Copper waste rock chemistry recovery rate visual_art copper visual_art.visual_art_medium Environmental science Leaching (metallurgy) |
| Zdroj: | Minerals Volume 10 Issue 10 Minerals, Vol 10, Iss 873, p 873 (2020) |
| ISSN: | 2075-163X |
| DOI: | 10.3390/min10100873 |
| Popis: | Mining activity produces a series of wastes that must be treated to avoid environmental pollution. In addition, some of these mining wastes still contain metallic elements that are interesting for their extraction with new less expensive techniques and that can work with low mineral grades, such as hydrometallurgy. This study evaluates the suitability of Copper recovery in mining wastes, coming from waste dump, with a high percentage of metal oxides and granite. This recovery is carried out through leaching in 0.05, 0.10, 0.15 and 0.20 molar Sulphuric Acid solutions, at ambient temperature and atmospheric pressure. The exposure of the waste to the solution was made for 96 h, taking measurements of the leaching and evaluating the increase in Copper concentration every 24 h. The results reflected a good Copper recovery rate with concentrations up to 1.9 g/L. The best results were obtained for the 0.20 molar Sulphuric Acid solutions, producing a stability in the Copper concentration after 72 h. Other elements in smaller proportion as the Zinc were also recovered. Therefore, a process of recovery of Copper was obtained with a robust, versatile and economic technique in mining residues that currently represent an environmental pollution. |
| Databáze: | OpenAIRE |
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