V. BAZAN ET AL. 135
initial oxidation temperature Tin and the exothermic heat
Qex of the samples, as well as the mass changes during
he
rogram HSC (Outokumpu), it was
po
e Minería,”
Secretaria de Minería de la Nación. Buenos Aires, Argen-
tina, 1994, pp. 5
[2] Segemar, Serve Argentina.
zan, “Algunos Fundamentos de las
ción
P. Sarquis and E. Brandaleze, “Factibilidad
ating to 1000˚C.
By correlating the DTA and TG results with the crystal
phases identified by XRD and the information obtained
though the thermodynamic equilibrium study performed
using the software p
ssible to identify the complex reaction mechanisms
involved during concentrate heating. The reaction evolu-
tion features an initial transformation of the sulphides to
oxides; then, the oxides react to form sulphates and are
finally transformed to oxides. These results were con-
firmed by the phases identified by microscopy and the
thermodynamic study on the Cu-Fe-S system.
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