Calculation of Phase Equilibria Relations in CaO-SiO2-FeOx-MgO System

被引：0

作者：

Wang, Nan ^{[1
]}

Huang, Cuihuan ^{[1
]}

Xin, Xueqian ^{[1
]}

Zou, Zongshu ^{[1
]}

Zhang, Z. ^{[2
]}

Xiao, Y. ^{[2
]}

Yang, Y. ^{[2
]}

机构：

[1] Northeastern Univ, Sch Met & Mat, Shenyang, Peoples R China

[2] Delft Univ Technol, Delft, Netherlands

来源：

2ND INTERNATIONAL SYMPOSIUM ON HIGH-TEMPERATURE METALLURGICAL PROCESSING | 2011年

基金：

中国国家自然科学基金;

关键词：

Bottom ash; Vitrification; CaO-SiO2-FeOx-MgO system; Equilibrium phase relation; CALPHAD; THERMODYNAMIC PROPERTIES; INCINERATOR BOTTOM; OPTIMIZATION; DIAGRAMS; GLASS; FEO;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Vitrification is considered as an attractive procedure for municipal solid waste incineration ash, which can realize the volume reduction and innocent treatment of incineration ash, as well as reuse of bottom ash. The main oxide components of molten ash slag are CaO, Al2O3, SIO2, Fe2O3, MgO, and Na2O, accounting for more than 90% of the total mass. The phase relations and thermodynamic properties of the CaO-Al2O3-SiO2-FeOx-MgO-Na20 oxide system is highly required, and is of great scientific significance for optimization of vitrification processing and sustainable resource utilization of melting slag. A study on the equilibria phase relations of CaOSiO2- MgO-FeOx system was done by using CALPHAD method based on FactSage in this paper. The modeling parameters for the thermodynamic properties of liquid phase in CaO-SiCh-MgOFeOx system were established and the equilibrium phase relations of MgO-SiO2-FeOx and CaOSiO2- FeOx-MgO systems were calculated for different temperatures and oxygen partial pressures.

引用

页码：137 / 142

页数：6

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