RT Journal Article
T1 Kinetic of Pyrite thermal degradation under oxidative environment
A1 Vázquez, Marta
A1 Moreno-Ventas Bravo, Ignacio
A1 Raposo, Irene
A1 Palma, Alberto
A1 Díaz, Manuel Jesús
AB Pyrite is the most common mineral in polymetallic sulphides ores. In order to apply thecombustion group theory to the pyrometallurgical processes that occur in the reactionshaft it is necessary to know the kinetic processes that happen in pyrite. In this study athermogravimetric analysis was carried out under oxidative atmospheric conditionswith 100% O2 and a heating ramp of 5, 10, 15 and 20 ºC min-1. The material used waspyrite with a grain size of 63-125 μm. From the thermogravimetric data we got thekinetic parameters of the oxidative reactions of pyrite. The different kinetic methodsused in this study have been E1641-16 ASTM, Ozawa-Flynn-Wall, Kissinger-Akahira-Sunose and Friedman.These methods were used for obtaining the kinetic parameters through Regressionanalysis, Sum of squares, mean residuals between experimental and calculated valuesand Student coefficient (95%) and to determine which kinetic method is the mostsuitable to describe the kinetics of pyrite oxidation.
PB Springer
SN 1388-6150
SN 1588-2926 (electrónico)
YR 2020
FD 2020
LK https://hdl.handle.net/10272/23316
UL https://hdl.handle.net/10272/23316
LA eng
NO Vázquez, M., Moreno-Ventas, I., Raposo, I., Palma, A., & Díaz, M. J. (2019). Kinetic of pyrite thermal degradation under oxidative environment. In Journal of Thermal Analysis and Calorimetry (Vol. 141, Issue 3, pp. 1157–1163). Springer Science and Business Media LLC. https://doi.org/10.1007/s10973-019-09098-4
DS Repositorio Institucional de la Universidad de Huelva
RD 1 jun 2026