J. Phys. IV France 123 (2005) 355-359
DOI: 10.1051/jp4:2005123065

Characterization of a flying ash stemming from the combustion of the coal

A. Moufti¹, R. Brahmi², H. Garmes¹, M. Bensitel³ and M. Mountadar<sup>1

1</sup>  The Chemical Analysis Unity and the Genius of the Environment, Faculty of Sciences, BP. 20, CP 24000, El Jadida, Morocco
²  Physical - Chemistry's Laboratory of the Materials, Faculty of Sciences, BP. 20, CP. 24000, El Jadida, Morocco
³  Unity of Catalysis and the Environment of the Physical chemistry Laboratory, Faculty of Sciences, BP. 20, CP 24000, El Jadida, Morocco

Abstract
In this study, we were interested in the physic - chemical characterization (SEM, BET, X-ray, DTA-TG, and IR) of the flying ashes stemming of the combustion of the coal in the thermal power station of JORF-LASFAR in EL Jadida (Morocco). On the one hand, we deduce from this study that these flying ashes are belonging to the class F Fly ash (according to ASTM standards). The X-ray diffraction shows that the ashes are mainly constituted by the aluminosilicate and the quartz. The thermal analysis (DTA-TG), the IR, and SEM proves the presence of the carbonates of the calcium. On the other hand, after washing the ashes, with the distilled water, an equilibrium of adsorption - desorption of the carbonates was reached after 30 minutes.

Key words: Flying Ashes, Characterization, Burnt Coal, XRD, SEM.


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