Therefore, it is concluded that the mass loss at 400–480 ◦C is caused by the oxidation of the sample particle surface and the decomposition of the interior for the pyrite particle without oxygen, in accordance with Eq. (1) and (2).
Therefore, it is concluded that the mass loss at 400–480 ◦C is caused by the oxidation of the sample particlesurface and the decomposition of the interior for the pyrite particle without oxygen, in accordance with Eq. (1) and (2).