About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering IX
|
| Presentation Title |
FTIR Analysis of Surface Modification of Laminar Lepidolite in a Cu²⁺-Xanthate System, and Its Behavior During Flotation. |
| Author(s) |
Jaime David Perez Islas, Martin Reyes Perez, Ramiro Escudero García, Ivan Alejandro Reyes Domínguez, Mizraim Uriel Flores Guerrero, Miguel Perez Labra, Julio Cesar Juárez Tapia , Gustavo Urbano Reyes |
| On-Site Speaker (Planned) |
Jaime David Perez Islas |
| Abstract Scope |
The increase in lithium consumption driven by the global energy transition requires optimizing the flotation concentration of complex hydrophilic silicates with lamellar habits, like lepidolite. This work investigates lepidolite separation kinetics using -400 mesh (-37 μm) particles and 0.6 ppm pine oil frother, evaluating surface activation with Cu2+ ions and potassium amyl xanthate (PAX) addition. Batch tests (0.5 to 10 min) determined recovery efficiency. Fourier Transform Infrared (FTIR) spectroscopy analysis revealed surface modification of lepidolite by adsorbed copper in the Cu2+-PAX and collectorless systems. This induces an intrinsic hydrophobicity, which is negatively affected by xanthate co-adsorption. These surface changes impact flotation behavior, achieving maximum recoveries of 18.7% and 20.1%, respectively. This study provides insights into the interactions between lithium-bearing micas, Cu2+ ions, and xanthate. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Hydrometallurgy, Other |