About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
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Symposium
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Computational Thermodynamics and Kinetics
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Presentation Title |
Thermodynamic Simulation of LiF Obtaining of A-Spodumene by Direct Roasting With NaF |
Author(s) |
M. Pérez-Labra, A. Hernandez-Ramirez, J.A. Romero-Serrano, M. U. Flores-Guerrero , M. Reyes-Pérez, A. Cruz-Ramírez, F. R. Barrientos-Hernández, F. Patiño-Cardona |
On-Site Speaker (Planned) |
M. Pérez-Labra |
Abstract Scope |
In this research work, the direct calcination reaction of spodumene (LiAlSi2O6) with NaF through thermodynamic simulation using the Equilib module included in the Fact Sage 8.2 software was studied. The LiAlSi2O6:NaF4 molar ratios (RM) analyzed were: 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.85, 1:1, 1:1.5 and 1:2.0 in the temperature range from 50°C to 1200°C and 1 atmosphere of pressure determining the chemical species in equilibrium every 50 °C through Gibbs energy minimization. The most stable chemical species formed in all RMs were: Li2SO4, NaAlSi3O8, and NaAlSiO4.The maximum % percentage yield (% PY) for the LiF specie was 100% in the solid state starting at 250°C and in the liquid state at temperature ≥ 850°C for the 1:2 RM with an excess of NaF of 15.77%. The results obtained from the present study allowed us to propose the reaction mechanism of the calcination process of spodumene with NaF. |
Proceedings Inclusion? |
Planned: |