Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes
Mullite-based ceramics were produced entirely from industrial wastes. Aluminum dross (AD) is a waste product produced in secondary aluminum refining, and coal fly ash (CFA) which is a waste generated by coal-fired power plant. Both were mixed together in different weight ratio, subsequently compacte...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2019
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| Online Access: | http://psasir.upm.edu.my/id/eprint/81364/ http://psasir.upm.edu.my/id/eprint/81364/1/MULLITE.pdf |
| _version_ | 1848859086262632448 |
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| author | Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin |
| author_facet | Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin |
| author_sort | Choo, Thye Foo |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Mullite-based ceramics were produced entirely from industrial wastes. Aluminum dross (AD) is a waste product produced in secondary aluminum refining, and coal fly ash (CFA) which is a waste generated by coal-fired power plant. Both were mixed together in different weight ratio, subsequently compacted and sintered. The effects of the sintering temperature, acid leaching and Al2O3/SiO2 ratio on the chemical, physical, thermal expansion properties of the samples were characterized in detail. The results showed that appropriate mixing ratio and acid leaching had positive effects on the mineralogy, crystallinity, and macromorphology of sintered samples. At sintering temperature of 1500 °C, high mullite content ceramics with good crystallinity were produced. The resultant ceramics exhibited excellent thermal expansion properties with coefficient of thermal expansion (CTE) values ranging from 4.0 to 5.9 × 10−6 °C−1 (average between 30 °C and 1000 °C). This study demonstrated that the production of mullite-based ceramics using entirely CFA and AD was feasible. |
| first_indexed | 2025-11-15T12:23:45Z |
| format | Article |
| id | upm-81364 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T12:23:45Z |
| publishDate | 2019 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-813642021-06-14T08:44:32Z http://psasir.upm.edu.my/id/eprint/81364/ Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin Mullite-based ceramics were produced entirely from industrial wastes. Aluminum dross (AD) is a waste product produced in secondary aluminum refining, and coal fly ash (CFA) which is a waste generated by coal-fired power plant. Both were mixed together in different weight ratio, subsequently compacted and sintered. The effects of the sintering temperature, acid leaching and Al2O3/SiO2 ratio on the chemical, physical, thermal expansion properties of the samples were characterized in detail. The results showed that appropriate mixing ratio and acid leaching had positive effects on the mineralogy, crystallinity, and macromorphology of sintered samples. At sintering temperature of 1500 °C, high mullite content ceramics with good crystallinity were produced. The resultant ceramics exhibited excellent thermal expansion properties with coefficient of thermal expansion (CTE) values ranging from 4.0 to 5.9 × 10−6 °C−1 (average between 30 °C and 1000 °C). This study demonstrated that the production of mullite-based ceramics using entirely CFA and AD was feasible. Elsevier 2019 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/81364/1/MULLITE.pdf Choo, Thye Foo and Mohd Salleh, Mohamad Amran and Kok, Kuan Ying and Matori, Khamirul Amin (2019) Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes. Ceramics International, 45 (6). pp. 7488-7494. ISSN 0272-8842 https://www.sciencedirect.com/science/article/pii/S0272884219300446 10.1016/j.ceramint.2019.01.041 |
| spellingShingle | Choo, Thye Foo Mohd Salleh, Mohamad Amran Kok, Kuan Ying Matori, Khamirul Amin Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes |
| title | Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes |
| title_full | Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes |
| title_fullStr | Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes |
| title_full_unstemmed | Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes |
| title_short | Mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes |
| title_sort | mineralogy and thermal expansion study of mullite-based ceramics synthesized from coal fly ash and aluminum dross industrial wastes |
| url | http://psasir.upm.edu.my/id/eprint/81364/ http://psasir.upm.edu.my/id/eprint/81364/ http://psasir.upm.edu.my/id/eprint/81364/ http://psasir.upm.edu.my/id/eprint/81364/1/MULLITE.pdf |