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Mineral Composition and Phase Transformations in the Refractory Lining of the Bottom of Aluminum Electrolysis Cells. Part 1.

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Refractories and Industrial Ceramics Aims and scope

Abstract

Results for specimens of the refractory lining sampled from the bottom of an aluminum electrolysis cell with a service life of 3.5 years examined by methods of petrography, chemical analysis, and electron probe x-ray microanalysis are reported. The main products of conversion are sodium aluminosilicates, sodium silicates, a glassy phase of variable composition, oxyfluoride glasses, and eutectics. Some of the specimens analyzed are high in β-alumina (20 – 50%). Fluorides are represented by NaF (about 7%), cryolite Na3AlF6 (2 – 5%), malladrite Na2SiF6 (2%), and NaF ⋅ MgF2 (1 – 2%), and the metallic phase, by aluminum (2 – 7%) and ferrosilicon (3 – 10%). The apparent density of the used refractory material is 2.5 – 2.62 g/cm3.

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Authors and Affiliations

  1. Ukrainian State Research Institute of Special Steels (UkrNIISpetsstal'), Zaporozhe, Ukraine

    V. V. Sharapova, I. I. Lishchuk, D. Yu. Boguslavskii & V. V. Chesnyak

  2. Zaporozhye Aluminum Production Kombinat, Zaporozhe, Ukraine

    V. V. Sharapova, I. I. Lishchuk, D. Yu. Boguslavskii & V. V. Chesnyak

Authors
  1. V. V. Sharapova
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  2. I. I. Lishchuk
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  3. D. Yu. Boguslavskii
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  4. V. V. Chesnyak
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Translated from Novye Ogneupory, No. 3, pp. 13 – 17, March, 2005.

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Sharapova, V.V., Lishchuk, I.I., Boguslavskii, D.Y. et al. Mineral Composition and Phase Transformations in the Refractory Lining of the Bottom of Aluminum Electrolysis Cells. Part 1.. Refract Ind Ceram 46, 165–169 (2005). https://doi.org/10.1007/s11148-005-0076-4

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  • DOI: https://doi.org/10.1007/s11148-005-0076-4

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