Experimental study and thermodynamic optimization of the ZnO–FeO–Fe2O3–CaO–SiO2 system
Source abstract
Abstract
Liquidus phase equilibrium experimental data from the present study for the ZnO-“FeO”-CaO-SiO system in air, combined with phase equilibria and thermodynamic data from the literature on the ZnO-“FeO”-CaO system in air and ZnO-“FeO”-CaO-SiO system in equilibrium with metallic Fe, have been used to obtain a self-consistent set of parameters of the thermodynamic models for all phases in the ZnO–FeO–FeO–CaO–SiO system. The modified quasichemical model is used for the liquid slag phase; spinel (Fe,Zn,Ca) (Fe,Zn,Ca,Va)O, melilite Ca(Fe,Fe,Zn)(Fe,Si)O and olivine (Fe,Zn,Ca)(Fe,Zn,Ca)SiO are described with compound energy formalism; lime and wustite (monoxide) (Ca,Fe,Zn)O, zincite (Zn,Fe,Ca)O, calcium-zinc ferrites CaFeO-“CaZnO” and CaFeO-“ZnFeO”, α- and α′-dicalcium silicate (Ca,Fe,Zn)SiO and tricalcium silicate (Ca,Fe,Zn)SiO and silicoferrite of calcium (SFC) CaFeSiO–CaFeSiO are described within Bragg-Williams formalism; for other phases, previous assessments have been adopted. The phase diagrams are back calculated with the optimized model parameters. Present study is a part of research program on the characterization of the multicomponent PbO–ZnO–FeO–FeO-“CuO”-CaO-SiO system.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Metallurgical Processes and Thermodynamics · Iron and Steelmaking Processes · Minerals Flotation and Separation Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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