Mullite fabrication from natural kaolin and aluminium slag
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 amo...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2018-07-01
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| Series: | Boletín de la Sociedad Española de Cerámica y Vidrio |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0366317518300025 |
| _version_ | 1811306521344081920 |
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| author | Fouzia Chargui Mohamed Hamidouche Hocine Belhouchet Yves Jorand Rachida Doufnoune Gilbert Fantozzi |
| author_facet | Fouzia Chargui Mohamed Hamidouche Hocine Belhouchet Yves Jorand Rachida Doufnoune Gilbert Fantozzi |
| author_sort | Fouzia Chargui |
| collection | DOAJ |
| description | 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. Resumen: Se estudiaron las transformaciones estructurales de las mezclas de caolín y escoria de aluminio durante el calentamiento mediante análisis térmico diferencial (ATD), análisis termogravimétrico (ATG), espectroscopía infrarroja por transformada de Fourier (EITF), análisis por difracción de rayos X (XRD, por sus siglas en inglés) y microscopia electrónica de barrido (MEB). La cantidad de mullita creada aumenta con la temperatura de cocción. A 1.500 °C, la mullitización de la mezcla es casi completa. La morfología de la mullita creada es bimodal (fases primaria y secundaria). La mullita primaria, creada a partir del procesamiento del caolín por la paulatina desintegración del metacaolín a partir de 990 °C, tiene una forma de cristales alargados. Además, la mullita secundaria creada por disolución-precipitación a partir de la fase de vidrio en presencia de partículas de alúmina tiene una forma de granos aciculares. Keywords: Mullite, Kaolin, Aluminum slag, Phase transformation, Palabras clave: Mullita, Caolín, Escoria de aluminio, Transformación de fase |
| first_indexed | 2024-04-13T08:47:02Z |
| format | Article |
| id | doaj.art-ce151277b0a0476a83085c530f1ed10b |
| institution | Directory Open Access Journal |
| issn | 0366-3175 |
| language | English |
| last_indexed | 2024-04-13T08:47:02Z |
| publishDate | 2018-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Boletín de la Sociedad Española de Cerámica y Vidrio |
| spelling | doaj.art-ce151277b0a0476a83085c530f1ed10b2022-12-22T02:53:39ZengElsevierBoletín de la Sociedad Española de Cerámica y Vidrio0366-31752018-07-01574169177Mullite fabrication from natural kaolin and aluminium slagFouzia Chargui0Mohamed Hamidouche1Hocine Belhouchet2Yves Jorand3Rachida Doufnoune4Gilbert Fantozzi5Emergent Materials Research Unit, Setif 1 University, 19000 Setif, Algeria; Optical and Precision Mechanical Institute, Setif 1 University, 19000 Setif, AlgeriaEmergent Materials Research Unit, Setif 1 University, 19000 Setif, Algeria; Optical and Precision Mechanical Institute, Setif 1 University, 19000 Setif, Algeria; Corresponding author.Non-metallic Materials Laboratory, Optical and Precision Mechanical Institute, Setif 1 University, 19000 Setif, Algeria; Physical Department, Faculty of Science, Mohamed Boudiaf M'sila University, 28000 M'Sila, AlgeriaLyon University, INSA-Lyon, MATEIS Laboratory CNRS-UMR 5510, 69621 Villeurbanne, FranceEmergent Materials Research Unit, Setif 1 University, 19000 Setif, Algeria; Process Engineering Department, Faculty of Technology, Setif 1 University, 19000 Setif, AlgeriaLyon University, INSA-Lyon, MATEIS Laboratory CNRS-UMR 5510, 69621 Villeurbanne, FranceThe 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. Resumen: Se estudiaron las transformaciones estructurales de las mezclas de caolín y escoria de aluminio durante el calentamiento mediante análisis térmico diferencial (ATD), análisis termogravimétrico (ATG), espectroscopía infrarroja por transformada de Fourier (EITF), análisis por difracción de rayos X (XRD, por sus siglas en inglés) y microscopia electrónica de barrido (MEB). La cantidad de mullita creada aumenta con la temperatura de cocción. A 1.500 °C, la mullitización de la mezcla es casi completa. La morfología de la mullita creada es bimodal (fases primaria y secundaria). La mullita primaria, creada a partir del procesamiento del caolín por la paulatina desintegración del metacaolín a partir de 990 °C, tiene una forma de cristales alargados. Además, la mullita secundaria creada por disolución-precipitación a partir de la fase de vidrio en presencia de partículas de alúmina tiene una forma de granos aciculares. Keywords: Mullite, Kaolin, Aluminum slag, Phase transformation, Palabras clave: Mullita, Caolín, Escoria de aluminio, Transformación de fasehttp://www.sciencedirect.com/science/article/pii/S0366317518300025 |
| spellingShingle | Fouzia Chargui Mohamed Hamidouche Hocine Belhouchet Yves Jorand Rachida Doufnoune Gilbert Fantozzi Mullite fabrication from natural kaolin and aluminium slag Boletín de la Sociedad Española de Cerámica y Vidrio |
| title | Mullite fabrication from natural kaolin and aluminium slag |
| title_full | Mullite fabrication from natural kaolin and aluminium slag |
| title_fullStr | Mullite fabrication from natural kaolin and aluminium slag |
| title_full_unstemmed | Mullite fabrication from natural kaolin and aluminium slag |
| title_short | Mullite fabrication from natural kaolin and aluminium slag |
| title_sort | mullite fabrication from natural kaolin and aluminium slag |
| url | http://www.sciencedirect.com/science/article/pii/S0366317518300025 |
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