Evaluation and application of sintered red mud and its incorporated clay ceramics as materials for building construction
| Autor: | Lucas Fonseca Amaral, Larissa da Silva Ribeiro, Michelle Souza Oliveira, Sergio Neves Monteiro, Ulisses Soares do Prado, Carlos Maurício Fontes Vieira, Monica Castoldi Borlini Gadioli, Fernanda Santos da Luz, Michelle Pereira Babisk, Fabio da Costa Garcia Filho |
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| Rok vydání: | 2020 |
| Předmět: |
lcsh:TN1-997
010302 applied physics Materials science Metallurgy Metals and Alloys 02 engineering and technology engineering.material 021001 nanoscience & nanotechnology Aluminum industry 01 natural sciences Bayer process Red mud Surfaces Coatings and Films Biomaterials Bauxite Hazardous waste visual_art 0103 physical sciences Ceramics and Composites visual_art.visual_art_medium engineering Ceramic 0210 nano-technology lcsh:Mining engineering. Metallurgy Building construction |
| Zdroj: | Journal of Materials Research and Technology, Vol 9, Iss 2, Pp 2186-2195 (2020) |
| ISSN: | 2238-7854 |
| DOI: | 10.1016/j.jmrt.2019.12.049 |
| Popis: | In the aluminum industry, the initial operation comprises the production of its oxide, Al2O3 (alumina) from ores, mainly the bauxite. The Bayer process is, in practice, the only used to produce alumina generating a huge amount of hazardous waste known as red mud. Among the proposed alternatives to consider red mud a useful by-product, the incorporation into clay ceramics allows large quantities to be reutilized as construction products. Several research works investigated this alternative but were limited to single clay incorporation without specific application in building construction products. In the present work the possibility of producing bricks and roofing tiles for building construction with plain red mud and incorporations separately, in two different clays, with low and high plasticity, was for the first time investigated. Both red mud and clays were characterized. Corresponding ceramics fired at 850, 950 and 1050°C were evaluated for their technological properties. The results indicated that plain red mud fired at any of these temperatures might be used as bricks according to the Brazilian standards. It could also be used for roofing tiles production when fired at 1050°C. Application in bricks for building construction and a preliminary environmental assessment were for the first time presented. Keywords: Red mud ceramic, Plain ceramic, Clay incorporated ceramic, Bricks and tiles |
| Databáze: | OpenAIRE |
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