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Kinetic and thermodynamic patterns of CaZrO3 formation at sintering zirconium dioxide with calcium carbonate

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Abstract

Experimental data were obtained on the kinetics of formation of calcium zirconate in the system of ZrO2-CaCO3 with a 1:1 molar ratio of the components at 1000, 1100, 1200, and 1300°C. The thermodynamic characteristics of reactions occurring during sintering zirconium dioxide and calcium carbonate were calculated. The changes in specific surface area of zirconium dioxide at heating and its effect on the kinetics of the studied process were investigated. Analysis of experimental data on the degree of CaZrO3 formation was performed using the fundamental equations of the kinetics of solid-state reactions. The best agreement between the calculation and the experiment was obtained for Jander and Zhuravlev-Lesokhin-Tempelman diffusion models.

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Authors and Affiliations

  1. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, Akademgorodok 26a, Apatity, Murmansk Region, 184209, Russia

    A. M. Kalinkin, K. V. Balyakin & E. V. Kalinkina

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  1. A. M. Kalinkin
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  2. K. V. Balyakin
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  3. E. V. Kalinkina
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Correspondence to A. M. Kalinkin.

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Original Russian Text © A.M. Kalinkin, K.V. Balyakin, E.V. Kalinkina, 2012, published in Zhurnal Obshchei Khimii, 2012, Vol. 82, No. 11, pp. 1761–1768.

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Kalinkin, A.M., Balyakin, K.V. & Kalinkina, E.V. Kinetic and thermodynamic patterns of CaZrO3 formation at sintering zirconium dioxide with calcium carbonate. Russ J Gen Chem 82, 1753–1760 (2012). https://doi.org/10.1134/S1070363212110011

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  • DOI: https://doi.org/10.1134/S1070363212110011

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