@article{10272/23316,
year = {2020},
url = {https://hdl.handle.net/10272/23316},
abstract = {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 a
thermogravimetric analysis was carried out under oxidative atmospheric conditions
with 100% O2 and a heating ramp of 5, 10, 15 and 20 ºC 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.},
publisher = {Springer},
title = {Kinetic of Pyrite thermal degradation under oxidative environment},
doi = {10.1007/s10973-019-09098-4},
author = {Vázquez, Marta and Moreno-Ventas Bravo, Ignacio and Raposo, Irene and Palma, Alberto and Díaz, Manuel Jesús},
}