J. Phys. IV France
Volume 123, March 2005
Page(s) 355 - 359

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. Mountadar1

1  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

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.

© EDP Sciences 2005