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| Titre: | Mullite fabrication from natural kaolin and aluminium slag |
| Auteur(s): | Chargui, Fouzia
Hamidouche, Mohamed
Belhouchet, Hocine
Jorand, Yves
Doufnoune, Rachida
Gilbert, Fantozzi |
| Mots-clés: | Mullite
Kaolin
Aluminum slag
Phase transformation |
| Date de publication: | 4-déc-2018 |
| Collection/Numéro: | Boletín de la Sociedad Española de Cerámica y Vidrio;Volume 57, Issue 4, July–August 2018, Pages 169-177 |
| Résumé: | The structural transformations of kaolin–aluminium slag mixtures during heating were studied using differential thermal analysis (DTA), thermal gravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction analysis (XRD) and scanning electron microscopy (SEM). The amount of formed mullite increases with the firing temperature. At 1500 °C, the mullitization of the mixture is almost complete. The morphology of the formed mullite is bimodal (primary and secondary phases). The primary mullite, formed from processing of kaolin by the gradual collapse of metakaolin from 990 °C, has a shape of elongated crystals. The other hand, the secondary mullite formed by solution-precipitation from the glass phase in the presence of alumina particles has a shape of acicular grains. |
| URI/URL: | http://dspace.univ-setif.dz:8888/jspui/handle/123456789/2985 |
| ISSN: | 0366-3175 |
| Collection(s) : | Articles
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