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.
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References
A. Niggli, Z. Anorg. Chem., 98 (1916) 241.
S. Turner, J. Soc. Glass Technol., 16 (1932) 94.
F. W. Wilburn, and C. Thomasson, Phys. Chem. Glass, 2 (1961) 126.
C. Kröger and G. Ziegler, Glastechnische Ber., 26 (1953) 346.
K. Kautz and G. Stromburg, Glastechn. Ber., 42 (1969) 309.
Tamman and Oelsen, Z. Anorg. All. Chem., 193 (1930) 245.
R. Warburton and F. W. Wilburn, Phys. Chem. Glass, 4 (1963) 91.
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Sinkó, K., Pöppl, L., Gábor, M. et al. Study of the binary CaCO3-SiO2 system by quantatitative DTA. Journal of Thermal Analysis 33, 1003–1011 (1988). https://doi.org/10.1007/BF02138623
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DOI: https://doi.org/10.1007/BF02138623