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| Indexado |
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| DOI | 10.3390/MIN14070714 | ||||
| Año | 2024 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
Oxide copper minerals are commonly extracted via acidic leaching, using acids such as H2SO4, HCl, or HNO3. These strong acids are the most widely used because of their high dissolution kinetics. However, their main concern is the high acid consumption because copper oxide deposits contain large amounts of acid-consuming gangue. This paper proposes using an alternative aqueous alkaline monosodium glutamate (MSG) system to leach copper oxide minerals. Tenorite (CuO) was used as the copper oxide mineral under study. The influence of process variables (such as temperature and glutamate concentration) and kinetics of this system on copper leaching from tenorite were studied. The results showed that temperature has a significant effect on copper dissolution rates. Increased temperature from 15 degrees C to 60 degrees C enhanced the copper extraction from 9.1% to 97.7% after 2 h. Leaching kinetics were analyzed using the shrinking core model (SCM) under various conditions, indicating that the leaching rate presented a mixed control. This method, however, fails to describe leaching for broad particle sizes due to its requirement for single-sized solid grains. This study demonstrated that a large particle size distribution in tenorite supported a successful extension of the SCM for leaching it from mixed glutamate solutions. The activation energy for the 15-60 degrees C temperature range was calculated to be 102.6 kJ/mol for the chemical control.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Perea, C. G. | - |
Universidad de Chile - Chile
Curtin Univ - Australia Centro Avanzado de Tecnologia para la Mineria - Chile WA School of Mines: Minerals, Energy and Chemical Engineering - Australia |
| 2 | IHLE-BASCUNAN, CHRISTIAN FELIPE | Hombre |
Universidad de Chile - Chile
Shimin Engn - Chile Shimin Engineering - Chile |
| 3 | Dyer, Laurence | - |
Curtin Univ - Australia
WA School of Mines: Minerals, Energy and Chemical Engineering - Australia |
| 4 | Quezada, Simon Diaz | - |
Universidad de Chile - Chile
Centro Avanzado de Tecnologia para la Mineria - Chile |
| 4 | Diaz-Quezada, Simon | Hombre |
Centro Avanzado de Tecnologia para la Mineria - Chile
|
| 5 | ESTAY-CUENCA, HUMBERTO ANTONIO | Hombre |
Universidad de Chile - Chile
Centro Avanzado de Tecnologia para la Mineria - Chile |
| Fuente |
|---|
| FONDECYT |
| CODELCO |
| Curtin University of Technology |
| Anillo Project |
| ANID |
| Advance Mining Technology Center |
| ANID Chile through the ANID-PFCHA/National doctorate/2020 |
| CODELCO through the "Piensa Mineria" contest |
| Universidad de Chile and Western Australian School of Mines |
| WASM |
| Agradecimiento |
|---|
| This research was funded by ANID Chile through the ANID-PFCHA/National doctorate/2020-21200126, ANID projects AFB220002/AFB230001, Fondecyt Project 1211044, Anillo Project ACT210027, CODELCO through the "Piensa Mineria" contest. |
| This research was funded by ANID Chile through the ANID-PFCHA/National doctorate/2020-21200126, ANID projects AFB220002/AFB230001, Fondecyt Project 1211044, Anillo Project ACT210027, CODELCO through the \u201CPiensa Miner\u00EDa\u201D contest. |
| This research was funded by ANID Chile through the ANID-PFCHA/National doctorate/2020-21200126, ANID projects AFB220002/AFB230001, Fondecyt Project 1211044, Anillo Project ACT210027, CODELCO through the \u201CPiensa Miner\u00EDa\u201D contest. |