INVESTIGADORES
GENNARI Fabiana Cristina
artículos
Título:
Iron selective chlorination from synthetic pseudobrookite
Autor/es:
F. C. GENNARI; D. M. PASQUEVICH
Revista:
MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW
Editorial:
Maney Publishing
Referencias:
Año: 1999 vol. 108 p. 39 - 47
ISSN:
0371-9553
Resumen:
The chlorination of synthetic pseudobrookite was studied by thermogravimetry in the temperature range 700-950 C; both isothermal and non-isothermal measurements were made. The efffect of reaction temperature on the chlorination rate was correlated with the morphological evolution and elemental composition of the reacting solids by means scanning-electron microscopy, energy-dispersive X-ray spectroscopy and X-ray diffraction analysis. It was found that chlorination took place as a topochemical process in which the iron was chlorinated selectively, forming FeCl3(g) and leavinf TiO2(s) as a solid residue. During the chlorination,however, some TiCl4(g) was formed and this was subsequently converted to TiO2 by its reaction with Fe2O3.
