A study on fiy ash: ballistic separation of a fly ash

• Main Authors: Eduardo Peris Mora, Jordi Payá, José Monzó
• Format: Article
• Language: English
• Published: Consejo Superior de Investigaciones Científicas 1991-09-01
• Series: Materiales de Construccion
• Online Access: http://materconstrucc.revistas.csic.es/index.php/materconstrucc/article/view/738

The object of this study is the characterization of several sized fractions from a "spanish fly ash" originating in the thermoelectric power plant in Andorra (Teruel). Physical (size distributions, densities) chemical (chemical composition) and mineralogical characteristics (X-ray diffractograms and infrared spectra) for those sized fractions have been analyzed. Initial fly ash was ballistically separated (horizontal draft) into four fractions using an aerodynamic tunnel with horizontal air current The separation effectivity was adapted for our later studies. The results obtained were interesting: in the first case, the simplicity of the separation method, by this way we will be able to use it for further studies on sized fractions. On the other hand, differences on granulometric distributions and vitreous nature will allow us to study the effect of several fractions on mechanic properties of concrete with them.