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Composition and Refractory Properties of Mixtures of Moroccan Silica-Alumina Geomaterials and Alumina
Department of Chemistry, Faculty of Science and Technology, University Hassan II Mohammedia, Casablanca, Morocco
Department of Earth Sciences, Geo-Materials and Geo-Environment Team (Geo M&E), Scientific Institute, University Mohammed V Agdal, Rabat, Morocco
Department of Chemistry, Faculty of Science and Technology, University Hassan II Mohammedia, Casablanca, Morocco
- 1 Department of Chemistry, Faculty of Science and Technology, University Hassan II Mohammedia, Casablanca, Morocco
- 2 Department of Earth Sciences, Geo-Materials and Geo-Environment Team (Geo M&E), Scientific Institute, University Mohammed V Agdal, Rabat, Morocco
- 3 Department of Chemistry, Faculty of Science and Technology, University Hassan II Mohammedia, Casablanca, Morocco
New Journal of Glass and Ceramics·Volume 03 (2013)·Pages 59–66·Published 30 April 2013·DOI10.4236/njgc.2013.32010
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Abstract
Five mixtures (M1 to M5) of silica-alumina geomaterials and two varieties of alumina (A P and A R ) were used for the elaboration of mullite refractory materials between 1500 ℃ and 1600 ℃ . An X-ray diffraction (XRD) analysis showed that the refractory samples are composed of mullite, corundum and silica. The length of the mullite crystals was meas ured by a method of image analysis of scanning electron microscopy (SEM). Chemical and mechanical properties of these materials were investigated and correlated with their microstructure. Resistance towards Acid Attack test showed that the refractory samples present good resistance, as well as, the alumina powder A R obtained from waste of sil ica-alumina bricks proves to be efficient for an eventual use.
KeywordsClaySilica-AluminaMullite RefractoryMechanical Properties
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