Effect of Nanotegnogenic High-Alumina Raw Materials on the Physical and Mechanical Parameters and Phase Composition of Acid-Resistant Materials

The use of nanotechnogenic high-alumina (Al 2 O 3 > 70%) raw materials in petrochemical production, such as the waste catalyst IM-2201 in the production of acid-resistant materials based on unbeneficiated kaolin clay, enables to obtain products with high physical, mechanical, and chemical paramet...

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Bibliographic Details
Published in:Refractories and industrial ceramics 2021-11, Vol.62 (4), p.475-482
Main Authors: Abdrakhimova, E. S., Abdrakhimov, V. Z.
Format: Article
Language:English
Subjects:
Acid resistance
Aluminum oxide
Ceramic materials
Ceramics
Chamotte
Characterization and Evaluation of Materials
Chemistry and Materials Science
Clay
Clay minerals
Composites
Corundum
Glass
Infrared analysis
Kaolin
Materials Science
Mechanical properties
Mullite
Natural Materials
Parameters
Phase composition
Physical properties
Raw materials
Reagents
Sintering
Surface energy
X ray analysis
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Summary:The use of nanotechnogenic high-alumina (Al 2 O 3 > 70%) raw materials in petrochemical production, such as the waste catalyst IM-2201 in the production of acid-resistant materials based on unbeneficiated kaolin clay, enables to obtain products with high physical, mechanical, and chemical parameters in a firing temperature range of 1250°C-1300 °C. Nanotechnogenic raw materials contribute to an increase in surface energy, which is the source of the sintering process. In compositions based on unbeneficiated kaolin clay and chamotte, mullite is mainly formed, which mainly imparts the operational properties of ceramic products. An x-ray analysis revealed that the introduction of nanotechnogenic high-alumina raw materials into the ceramic masses contributes to the formation of corundum. Infrared spectroscopic analysis confirmed the data of x-ray studies. Corundum is characterized by the high chemical resistance to acidic and alkaline reagents and provides high physical and mechanical properties in acid-resistant materials.
ISSN:1083-4877
1573-9139
DOI:10.1007/s11148-021-00628-y