Composition and Morphology of Narrowly Sized Ferrospheres Isolated from Various Types of Fly Ash


Тип публикации: статья из журнала

Год издания: 2013

Идентификатор DOI: 10.1134/S0020168513060113

Ключевые слова: Fayalite, Hercynite, Iron content, Monotonic variations, Primary crystallization fields, Size fraction, Systematic study, Types of power, Functional materials, Morphology, Phase diagrams, Silicate minerals, Fly ash

Аннотация: 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 Показать полностьюprimary crystallization fields of wustite, 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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Выпуск журнала: Vol. 49, Is. 6

Номера страниц: 586-594

ISSN журнала: 00201685

Место издания: NEW YORK



  • Sharonova O.M. (Institute of Chemistry and Chemical Technology,Siberian Branch,Russian Academy of Sciences)
  • Anshits N.N. (Siberian Federal University)
  • Anshits A.G. (Siberian Federal University)

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