Extensions of a structural model for binary silicate systems

Antonio Romero-Serrano, Arthur D. Pelton

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Abstract

Our earlier structural model for binary silicate melts and glasses is extended. More general expressions for the enthalpy and nonconfigurational entropy are given. Expressions for partial thermodynamic properties are derived. A least-squares optimization program permits all available thermodynamic and phase diagram data to be optimized simultaneously within experimental error limits. The model is extended from MO-SiO2 to M2O-SiO2 solutions. Data in acidic melts is well represented for the Na2O-SiO2 system. Examples of optimizations for the MnO-SiO2, CaO-SiO2, and Na2O-SiO2 systems are presented. The model is extended to include sulfide ion. Good predictions of sulfide capacities are obtained. © 1995 The Minerals, Metals & Material Society.
Original languageAmerican English
Pages (from-to)305-315
Number of pages273
JournalMetallurgical and Materials Transactions B
DOIs
StatePublished - 1 Apr 1995
Externally publishedYes

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