Influence of the composition and structure of the glass-crystalline shell of cenospheres on helium permeability

Тип публикации: статья из журнала

Год издания: 2012

Идентификатор DOI: 10.1134/S1087659612020046

Ключевые слова: Cenospheres, Correlation coefficient, Mullite phase, Narrow fractions, Nonmagnetics, Regression equation, Crystalline materials, Fly ash, Glass, Helium, Magnetic separation, Silicate minerals, Aluminum

Аннотация: We studied the interrelation between the composition, morphology, and helium permeability of the shell of narrow fractions of nonmagnetic nonperforated cenospheres extracted from cenosphere concentrates of fly ash of the sialic type with the use of technological stages of hydrodynamic, magnetic separation, sizing, and aerodynamic classification. For the interval of variation of Al2O3 content from 20 to 38 wt %, the regression equation [SiO2]/[Al2O3] = 5.06 - 0.1[Al2O3] is established, with the correlation coefficient equal to -0.98. It is found that, together with the growth in the concentration of Al2O3 in the indicated interval, the content of the originally mullite phase increases from 1.3 to 42.4 wt %, and this is accompanied by the growth of the helium permeability of the glass-crystalline shell of the cenospheres.

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Издание

Журнал: GLASS PHYSICS AND CHEMISTRY

Выпуск журнала: Vol. 38, Is. 2

Номера страниц: 218-227

ISSN журнала: 10876596

Место издания: NEW YORK

Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER

Авторы

  • Fomenko E.V. (Institute of Chemistry and Chemical Technology of the Siberian Branch,Russian Academy of Sciences)
  • Anshits N.N. (Siberian Federal University)
  • Pankova M.V. (Institute of Chemistry and Chemical Technology of the Siberian Branch,Russian Academy of Sciences)
  • Mikhaylova O.A. (Institute of Chemistry and Chemical Technology of the Siberian Branch,Russian Academy of Sciences)
  • Solovyov L.A. (Institute of Chemistry and Chemical Technology of the Siberian Branch,Russian Academy of Sciences)
  • Shishkina N.N. (Institute of Chemistry and Chemical Technology of the Siberian Branch,Russian Academy of Sciences)
  • Anshits A.G. (Siberian Federal University)

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