RT Journal Article
T1 Kinetic of Pyrite thermal degradation 1 under oxidative environment
A1 Vázquez, Marta
A1 Moreno-Ventas Bravo, Ignacio
A1 Raposo, Irene
A1 Palma López, Alberto
A1 Díaz Blanco, Manuel Jesús
K1 Pyrite
K1 Thermal degradation
AB Pyrite is the most common mineral in polymetallic sulphides ores. In order to apply the combustion group theory to the pyrometallurgical processes that occur in the reaction shaft, it is necessary to know the kinetic processes that happen in pyrite. In this study, thermogravimetric analysis was carried out under oxidative atmospheric conditions with 100% O2 and a heating ramp of 5, 10, 15 and 20 °C min−1. The material used was pyrite with a grain size of 63–125 μm. From the thermogravimetric data, we got the kinetic parameters of the oxidative reactions of pyrite. The different kinetic methods used 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 regression analysis, sum of squares, mean residuals between experimental and calculated values and Student coefficient (95%) and to determine which kinetic method is the most suitable to describe the kinetics of pyrite oxidation.
PB Springer Nature
SN 1388-6150
SN 1572-8943 (electrónico)
YR 2019
FD 2019-03-03
LK http://hdl.handle.net/10272/17609
UL http://hdl.handle.net/10272/17609
LA eng
NO Vázquez, M., Moreno-Ventas, I., Raposo, I. et al. Kinetic of pyrite thermal degradation under oxidative environment. J Therm Anal Calorim (2019). https://doi.org/10.1007/s10973-019-09098-4
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026