Synthesis, heating, and melting of stoichiometric glass (CaSiO3·SiO2)

被引：0

作者：

V. S. Engelsht

V. Zh. Muratalieva

机构：

[1] Institute of Physical and Technical Problems and Material Science NAS KR,

[2] Kyrgyz State Technical University,undefined

来源：

Thermophysics and Aeromechanics | 2014年 / 21卷

关键词：

thermodynamic analysis; exothermic effect; glass; synthesis; heating; melting; temperature; enthalpy; heat of reaction; heat content;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Thermodynamic analysis (TERRA program) of synthesis, heating, and melting of stoichiometric glass CaSiO3·SiO2 has been carried out. Chemically pure substances silica and lime are subjected to exothermic reaction with further external heating and melting. Wollastonite is synthesized, the chemical reaction generates heat Qchr = −505.3 kJ/kg, and temperature increases T = 820 K. When Tmelt = 1812–1814 K, wollastonite melts, and a mixture of liquid wollastonite and condensed silica is formed. At Tmelt = 1995–1997 K, silica melts, and stoichiometric glass (CaSiO3·SiO2) is formed. Evolutions of temperature and melting of wollastonite and silica have been studied by detailed step-by-step thermodynamic calculation (ΔT = 0.1 K).

引用

页码：113 / 118

页数：5