Thermodynamic analysis of binary liquid silicates and prediction of ternary solution properties by modified quasichemical equations
Journal Article
·
· Geochim. Cosmochim. Acta; (United States)
Modified quasichemical equations, developed for the analysis of the thermodynamic properties of structurally ordered liquid solutions, are shown to be well-suited for use with molten silicates. For binary systems, these equations have been coupled with a least-squares optimization computer program to analyze simultaneously all thermodynamic data including phase diagrams, Gibbs energies and enthalpies of formation of compounds, activities, enthalpies of mixing, entropies of fusion, miscibility gaps, etc. In this manner, data for several binary systems have been analyzed and represented with a small number of parameters. In the present article, results for the SiO/sub 2/-MgO, SiO/sub 2/-Na/sub 2/O and MgO-CaO systems are presented. The resulting equations represent all the binary data, including the phase diagrams, within or virtually within experimental error limits. From the modified quasichemical equations for ternary systems, ternary thermodynamic properties can be approximated solely from data from the subsidiary binary systems. Results for the SiO/sub 2/-CaO-Na/sub 2/O, SiO/sub 2/-CaO-MgO, and SiO/sub 2/-MgO-FeO systems are in excellent agreement with measured ternary data. Predictions for the quaternary system SiO/sub 2/-MgO-CaO-Na/sub 2/O are also presented.
- Research Organization:
- Argonne National Lab., IL
- OSTI ID:
- 7023526
- Journal Information:
- Geochim. Cosmochim. Acta; (United States), Journal Name: Geochim. Cosmochim. Acta; (United States) Vol. 51:1; ISSN GCACA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Critical evaluation and optimization of the thermodynamic properties and phase diagrams of the CaO-Al[sub 2]O[sub 3], Al[sub 2]O[sub 3]-SiO[sub 2], and CaO-Al[sub 2]O[sub 3]-SiO[sub 2] systems
Computer-assisted analyses of the thermodynamic properties of slags in coal-combustion systems
A Structural Study on the Foaming Behavior of CaO-SiO{sub 2}-MO (MO = MgO, FeO, or Al{sub 2}O{sub 3}) Ternary Slag System
Journal Article
·
Fri Oct 01 00:00:00 EDT 1993
· Metallurgical Transactions, B (Process Metallurgy); (United States)
·
OSTI ID:6075915
Computer-assisted analyses of the thermodynamic properties of slags in coal-combustion systems
Technical Report
·
Thu Sep 01 00:00:00 EDT 1983
·
OSTI ID:5677845
A Structural Study on the Foaming Behavior of CaO-SiO{sub 2}-MO (MO = MgO, FeO, or Al{sub 2}O{sub 3}) Ternary Slag System
Journal Article
·
Thu Dec 14 23:00:00 EST 2017
· Metallurgical and Materials Transactions B, Process Metallurgy and Materials Processing Science
·
OSTI ID:22856083