Vázquez Vázquez, MercedesDíaz Blanco, Manuel JesúsParra Figueroa, RobertoBalladares Varela, E. R.Jerez Riveros, O.Cuevas Cerda, M.Moreno-Ventas Bravo, Ignacio2024-02-192024-02-192024-01Vázquez Vázquez, M., Díaz Blanco, M. J., Parra Figueroa, R. A., Balladares Varela, E. R., Jerez Riveros, O., Cuevas Cerda, M., & Moreno-Ventas Bravo, I. (2024). Kinetic study of Cu2S–FeS mixtures in an oxidative environment by thermogravimetric and thermodynamic analysis. In Materials Chemistry and Physics (Vol. 311, p. 128548). Elsevier BV. https://doi.org/10.1016/j.matchemphys.2023.1285480254-05841879-3312 (electrónico)https://hdl.handle.net/10272/23259Two samples of Cu2S–FeS mixtures were prepared in order to study the thermal oxidation evolution of the raw materials used during the first and second sub-stages of slag blowing in a converter furnace. To determine the thermal evolution in an oxidative environment, thermogravimetric analysis (TGA) was performed on both samples at four linear heating ramps (5, 10, 15 and 20 ◦C min 1), obtaining similar curves in both cases. Of the methods studied, Friedman, Coats-Redfern, Flynn-Wall-Ozawa and Kissinger-Akahira-Sunose, the latter was found to be the most suitable to represent the oxidative evolution of Cu2S–FeS mixtures. The kinetic parameters calculated using Kissinger-Akahira-Sunose method are highly dependent on the degree of conversion. The results obtained for the activation energy ranging between 10 and 20 Kj mol 1 for conversion rates of 0.2, and between 30 and 50 Kj mol 1 for conversion rates of 0.9. In addition, a thermodynamic computational model was developed to determine the reactions taking place during the oxidation of the Cu2S–FeS mixturesengAtribución-NoComercial-SinDerivadas 3.0 Españahttp://creativecommons.org/licenses/by-nc-nd/3.0/es/CopperThermodynamicFactSageThermogravimetric analysisKineticjournal article10.1016/j.matchemphys.2023.128548open access23 Química