NJGC  Vol.2 No.3 , July 2012
Elaboration and Characterization of Mullite Refractory Products from Moroccan Andalusite
Abstract: Enrichment of schist mined in Morocco resulted in an extract essentially made of andalusite, quartz and muscovite, which was investigated with the aim to synthesize mullite refractory materials. X-ray diffraction analysis was used to assess phase transformations upon heating at different temperatures. Mullite formation starts as early as 1200℃ and seems almost total at 1450℃. This process correlates with a weak shrinkage (3.5% at 1450℃) and the formation of an important glass phase. Green compacts obtained by unidirectional pressing the extract powder were heated under air in the temperature range 1200℃ - 1600℃. Chemical and mechanical properties of these materials were investigated and correlated with their microstructure.
Cite this paper: M. Sardy, A. Arib, K. Abbassi and M. Gomina, "Elaboration and Characterization of Mullite Refractory Products from Moroccan Andalusite," New Journal of Glass and Ceramics, Vol. 2 No. 3, 2012, pp. 121-125. doi: 10.4236/njgc.2012.23017.

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