Effect of topaz on the synthesis of mullite in mixtures of kaolinite and alumina

T. V. Vakalova, V. M. Pogrebenkov, A. V. Ivanchenkov, E. V. Alekseev

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The synthesis of mullite in mixtures of kaolinite and alumina in the presence of small amounts of topaz is studied. Topaz is shown to activate the synthesis of both the primary (from kaolinite) and secondary mullite (through binding silica produced by thermal degradation of kaolinite), decrease the temperature of synthesis by 100°C, and increase the total yield of mullite. Products of the thermal degradation of topaz - mullite and gaseous chemically active fluoride compounds - are shown to play the role of mineralizing agents.

Original languageEnglish
Pages (from-to)416-420
Number of pages5
JournalRefractories and Industrial Ceramics
Volume45
Issue number6
DOIs
Publication statusPublished - 1 Nov 2004

Fingerprint

Topaz
Kaolin
Aluminum Oxide
Kaolinite
Mullite
Alumina
Pyrolysis
Fluorides
Silicon Dioxide
Silica
aluminosilicate

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry

Cite this

Effect of topaz on the synthesis of mullite in mixtures of kaolinite and alumina. / Vakalova, T. V.; Pogrebenkov, V. M.; Ivanchenkov, A. V.; Alekseev, E. V.

In: Refractories and Industrial Ceramics, Vol. 45, No. 6, 01.11.2004, p. 416-420.

Research output: Contribution to journalArticle

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