Analytical Determination of the Influence of Aluminum-Containing Nanotechnogenic Raw Materials on the Performance of Aci
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Vol. 61, No. 3, September, 2020
ANALYTICAL DETERMINATION OF THE INFLUENCE OF ALUMINUM-CONTAINING NANOTECHNOGENIC RAW MATERIALS ON THE PERFORMANCE OF ACID-RESISTANT MATERIALS V. Z. Abdrakhimov1 and E. S. Abdrakhimova2,3 Translated from Novye Ogneupory, No. 5, pp. 41 – 44, May 2020.
Original article submitted July 13, 2019. The results of analytical determination of the effect of nanotechnogenic waste – spent catalyst, on acid resistance, strength and heat resistance of acid-resistant tiles showed three main areas of structural adjustment of the material: increasing growth rate of indicators, a constant growth rate and a site with a sharply negative growth dynamics. Structural changes that improve the studied indicators are associated with the formation of a new mineral – mullite; the negative growth dynamics of indicators is associated with an increase in the amount of cristobalite, which contributes to an increase in the volume of the product by 15.4%. Keywords: nanotechnogenic raw materials, spent IM-2201 catalyst, clay part of zircon-ilmenite ore (ZIO) gravitation tailings, acid resistance.
generation. To obtain acid-resistant tiles, spent catalyst with particle sizes from 100 to 200 nm was used. The chemical composition of the starting components is shown in Table 1. For the analytical assessment of the effect of aluminum-containing nanotechnogenic raw materials on acid resistance, strength and heat resistance of acid-resistant materials, compositions 1 – 10, shown in Table 2, were investigated. The ceramic mass was prepared by a plastic method at a moisture content of 22 – 24% (24% for composition 1). From the mass, square tiles of the PK-1 type (dimensions 100 ´ 100 ´ 20 mm) were molded, which were dried to a residual moisture content of no more than 5% and fired at 1300°C. Table 3 shows the technical indicators of the tiles. Studies have shown that an increase in the content of the spent catalyst up to 35% (composition 7, see Table 2) improves the technical performance of acid-resistant materials.
These present studies are a continuation of works [1 – 4] aimed at the use of aluminum-containing nanotechnogenic waste and non-ferrous metallurgy waste in the composition of ceramic masses for obtaining acid-resistant materials. To obtain acid-resistant materials, non-ferrous metallurgy waste was used as the clay component – the clay part of zircon-ilmenite ore gravitational tailings (ZIG) [5, 6], as an aluminum-containing softener – spent catalyst IM-2201, which is a high-alumina slag waste from the petrochemical industry of the Novokuibyshevsk petrochemical plant [2, 3, 7]. Sludge waste differs from highly dispersed powdery materials of natural and technogenic origin in nanoscale, which ranges from 80 to 3000 nm and depends on the conditions of waste 1 2 3
Samara State University of Economics, Samara, Russia. Samara National Research University named after academician S. P. Korolev (Samara University). [email protected]
TABLE 1. Chemical Composition of the Starting Components, wt. % SiO2
Al2O3
TiO2
Fe2O3
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