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Composition and morphology of narrowly sized ferrospheres isolated from various types of fly ash

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Inorganic Materials Aims and scope

Abstract

We report a systematic study of the interrelationship between the composition and microstructure of ferrospheres isolated from all known types of power plant fly ash. Our results demonstrate that the macro-component composition of narrow ferrosphere size fractions corresponds to the compositions of the phase boundaries between the primary crystallization fields of wüstite, fayalite, Fe-cordierite, and hercynite in the phase diagram of the FeO-SiO2-Al2O3 system. An increase in iron content leads to a monotonic variation in the main morphological species of the ferrospheres in the following sequence: porous, glassy, dendritic, skeletal-dendritic, and blocky. The relationships identified in this study allow one to find a fly ash source suitable for the preparation of functional materials of controlled composition and morphology.

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Authors and Affiliations

  1. Institute of Chemistry and Chemical Technology, Siberian Branch, Russian Academy of Sciences, ul. Karla Marksa 42, Krasnoyarsk, 660049, Russia

    O. M. Sharonova, N. N. Anshits & A. G. Anshits

  2. Siberian Federal University, Svobodnyi pr. 79, Krasnoyarsk, 660041, Russia

    N. N. Anshits & A. G. Anshits

Authors
  1. O. M. Sharonova
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  2. N. N. Anshits
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  3. A. G. Anshits
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Correspondence to O. M. Sharonova.

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Original Russian Text © O.M. Sharonova, N.N. Anshits, A.G. Anshits, 2013, published in Neorganicheskie Materialy, 2013, Vol. 49, No. 6, pp. 625–634.

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Sharonova, O.M., Anshits, N.N. & Anshits, A.G. Composition and morphology of narrowly sized ferrospheres isolated from various types of fly ash. Inorg Mater 49, 586–594 (2013). https://doi.org/10.1134/S0020168513060113

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  • DOI: https://doi.org/10.1134/S0020168513060113

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