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Influence of High-Alumina Alkaline-Etching Sludge on the Technical Indicators and Phase Composition of Acid-Resistant Materials

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Parts with high physicotechnical and chemical characteristics at firing temperature 1300°C can be obtained by introducing in amount 40% into the ceramic body nanotechnical high-alumina raw material from calcined alkaline-etching sludge. Nanotechnogenic raw materials afford higher surface energy, which is the source of the sintering process. Investigations showed that in compositions not containing high-alumina raw material — calcined sludge from alkaline-etching — mainly mullite is formed and is responsible for the operational properties of ceramic parts. X-ray diffractometric analysis showed that the introduction of calcined alkaline sludge into the compositions of ceramic bodies affords the formation of corundum.

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Correspondence to E. S. Abdrakhimova.

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Translated from Steklo i Keramika, No. 9, pp. 33 – 39, September, 2021.

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Abdrakhimova, E.S. Influence of High-Alumina Alkaline-Etching Sludge on the Technical Indicators and Phase Composition of Acid-Resistant Materials. Glass Ceram 78, 369–373 (2022). https://doi.org/10.1007/s10717-022-00413-4

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  • DOI: https://doi.org/10.1007/s10717-022-00413-4

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