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Interaction of magnesia-ferriferous slag with sodium hydroxide solutions: Experimental and physicochemical modeling

  • Physicochemical Investigation of Systems and Processes
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Abstract

The effect of carbon dioxide as milling medium on the ability of magnesia-ferriferous slag to dissolve in alkali solutions was examined. The degree of extraction of silicon and aluminum from the slag into a sodium hydroxide solution was studied in relation to the milling time in a ball mill, milling atmosphere, and NaOH concentration. The surface of slag particles mechanochemically carbonated upon grinding in a carbon dioxide atmosphere exhibits enhanced reactivity, which is consistent with an increase in the compression strength of geopolymer samples prepared on the basis of this slag. The experimental results are in good agreement with the results of thermodynamic modeling of the interaction of slags with alkali using Selektor program complex.

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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, 184209, Russia

    E. V. Kalinkina, B. I. Gurevich & A. M. Kalinkin

  2. Institute of Problems of Industrial Ecology of the North, Kola Scientific Center, Russian Academy of Sciences, Akademgorodok 14a, Apatity, 184209, Russia

    S. I. Mazukhina

Authors
  1. E. V. Kalinkina
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  2. B. I. Gurevich
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  3. A. M. Kalinkin
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  4. S. I. Mazukhina
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Corresponding author

Correspondence to A. M. Kalinkin.

Additional information

Original Russian Text © E.V. Kalinkina, B.I. Gurevich, A.M. Kalinkin, S.I. Mazukhina, 2015, published in Zhurnal Prikladnoi Khimii, 2015, Vol. 88, No. 7, pp. 1036−1042.

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Kalinkina, E.V., Gurevich, B.I., Kalinkin, A.M. et al. Interaction of magnesia-ferriferous slag with sodium hydroxide solutions: Experimental and physicochemical modeling. Russ J Appl Chem 88, 1127–1133 (2015). https://doi.org/10.1134/S1070427215070046

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  • DOI: https://doi.org/10.1134/S1070427215070046

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