Critical assessment and thermodynamic modeling of the Cu-Fe-O-Si system

被引：32

作者：

Hidayat, Taufiq ^{[1
]}

Shishin, Denis ^{[1
]}

Decterov, Sergei A. ^{[2
,3
]}

Jak, Evgueni ^{[1
]}

机构：

[1] Univ Queensland, Sch Chem Engn, Pyromet Innovat Ctr, Brisbane, Qld 4072, Australia

[2] Ecole Polytech, CRCT, Dept Genie Chim, Montreal, PQ H3C 3A7, Canada

[3] Univ Queensland, Sch Chem Engn, Brisbane, Qld 4072, Australia

来源：

CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY | 2017年 / 58卷

基金：

澳大利亚研究理事会;

关键词：

QUASI-CHEMICAL MODEL; IRON SILICATE SLAGS; DISTRIBUTION EQUILIBRIA; LIQUID-IRON; COPPER; SOLUBILITY; OPTIMIZATION; DATABASE; OXYGEN;

D O I：

10.1016/j.calphad.2017.06.003

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present study is the first Calphad-type assessment of the Cu-Fe-O-Si system. All relevant thermodynamic and phase equilibrium data have been critically evaluated to produce a thermodynamic database describing the Gibbs energies of all phases in the system. The predictive range of the database covers all conditions of pyrometallurgical production of copper in terms of temperature and oxygen partial pressure. Liquid oxide slag and liquid metal phases have been described using two separate solution models, both developed within the framework of the Modified Quasichemical Formalism. Slag model is expressed as [Cu+, Fe2+, Fe3+, Si4+][O2-] and metal model is expressed as (Cu-I, Fe-II, O-II). They are internally consistent with the models for fcc-Cu, fcc-Fe, bcc-Fe, spinel, wiistite, CuFeO2, Cu2O, Fe2SiO4, Fe2O3 and SiO2 obtained in the previous optimizations of the Cu-O, Fe-O, Cu-Fe, Cu-Fe-O, Cu-O-Si, Fe-O-Si sub-systems.

引用

页码：101 / 114

页数：14

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