About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Rare Metal Extraction & Processing
|
| Presentation Title |
Implementation of glycine and phosphate as organic ligands in the presence of thiourea to reduce copper and iron interference in silver from tailings |
| Author(s) |
Erick Jesus Muñoz Hernandez |
| On-Site Speaker (Planned) |
Erick Jesus Muñoz Hernandez |
| Abstract Scope |
The presence of metal ions such as copper and iron negatively interferes with the selective leaching of silver. In this study, glycine and phosphate were used as organic ligands in combination with thiourea, aiming to reduce this interference and improve the efficiency of silver dissolution from mining tailings.
To determine the initial content of copper, iron, and silver in the sample, it was previously analyzed by inductively coupled plasma mass spectrometry (ICP) and X-ray fluorescence (XRF). Leaching tests were carried out with a constant thiourea concentration of 0.1 mol L⁻¹, while the concentrations of glycine and phosphate were varied.
The system containing 0.1 mol L⁻¹ of phosphate achieved a maximum silver leaching of 65.53%, with simultaneous dissolution of 57.95% of iron and 55.28% of copper. In contrast, the system with glycine at the same concentration reached a maximum recovery of 40% for silver, 13.92% for iron, and 26.08% for copper.
|
| Proceedings Inclusion? |
Planned: |
| Keywords |
Hidrometalurgia, Extracción y procesamiento, Reciclaje y recuperación secundaria |