Thermodynamics of SilicatesThe intensification of the production of silicate materials and products makes a de tailed theoretical study of the processes underlying their manufacture and service more and more urgent. The thermodynamic method is of great importance for studying chemical reac tions of silicate technology. Together with a study of the rate and mechanism of sub stance transfer, it permits obtaining necessary data for the efficient operation of technological processes. The progress of science in recent years has solved numerous problems in the field of the physical chemistry of silicates. The great progress in deciphering silicate structures, and working out methods of the synthesis of minerals and studying their properties must be mentioned. New methods of determining thermic constants have appeared. In future these methods should be more widely used for determining the heats of the silicate forma tion and related compounds in crystalline and vitreous state. This concerns in par ticular the system - CaO - Ab03 - Fe203 - Si0 - H 0 -which is of great impor 2 2 tance for the technology of cement and concrete, ceramics, refractories and glass. |
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Thermodynamics of Silicates V.I. Babushkin,O.P. Mchedlov-Petrossyan,G.M. Matveyev No preview available - 2011 |
Common terms and phrases
2CaO 3CaO 4CaO activity afwillite Akad Nauk SSSR Al₂O alteration anhydrite anions Babushkin C₂S Ca2+ cal/mol deg calcium aluminate calcium hydroxide calcium oxide calculations CaSO4 ceramics chemical potential chemical thermodynamics components composition constant crystalline crystallization determined dissociation ences enthalpy entropy equation equilibrium equilibrium constant Fe₂O formula Gibbs free energy glass gypsum H₂O heat capacity heat effect high temperatures hydration reactions hydrosilicates initial substances interaction ions K₂O kaolinite kcal kcal/mol Khim kinetic Li₂O liquid main reactions Matveyev GM Mchedlov-Petrossyan melting metals method mixtures Moscow mullite Na₂O obtained orthosilicate oxides phase polymorphic transformations potential pressure processes range of 298 ratio reac silicate formation silicate systems sillimanite SiO2 cr solid solid-phase reactions solution sulphate system CaO Table Temp temperature dependence temperature range thermodynamic analysis thermodynamic properties thermodynamic stability tion tobermorite vitreous ΔΗ Ե Ե Ե