Study of the binary CaCO3-SiO2 system by quantatitative DTA

K. Sinkó, L. Pöppl, M. Gábor, B. Migály

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Solid-state reactions in the CaCO3-SiO2 system with different mass ratios (CaCO3:SiO2=from 1:0.2 to 1:10) were studied by means of thermogravimetry, quantitative DTA and high-temperature X-ray diffraction up to 1500 °C. It was found that not CaCO3, but CaO reacted with SiO2. The rate of decarboxylation increased and the temperature of formation of silicate phases decreased significantly with increasing silica content. Only mono- and dicalcium silicates could be detected as solid-state reaction products. Above 1400 °C, an intensive melting process took place; the amount of silica had no clear effect on its temperature range. Quantitative DTA and X-ray diffraction data proved that, below 1000 °C, not only the decarboxylation process, but also silicate formation must be taken into consideration.

Original languageEnglish
Pages (from-to)1003-1011
Number of pages9
JournalJournal of Thermal Analysis
Volume33
Issue number3
DOIs
Publication statusPublished - Sep 1988

Fingerprint

Differential thermal analysis
Silicates
silicates
decarboxylation
thermal analysis
Solid state reactions
Silicon Dioxide
Silica
silicon dioxide
solid state
X ray diffraction
thermogravimetry
Reaction products
diffraction
mass ratios
reaction products
Temperature
Thermogravimetric analysis
Melting
x rays

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Engineering(all)

Cite this

Study of the binary CaCO3-SiO2 system by quantatitative DTA. / Sinkó, K.; Pöppl, L.; Gábor, M.; Migály, B.

In: Journal of Thermal Analysis, Vol. 33, No. 3, 09.1988, p. 1003-1011.

Research output: Contribution to journalArticle

Sinkó, K. ; Pöppl, L. ; Gábor, M. ; Migály, B. / Study of the binary CaCO3-SiO2 system by quantatitative DTA. In: Journal of Thermal Analysis. 1988 ; Vol. 33, No. 3. pp. 1003-1011.
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