Thermodynamic optimization of the binary CaO–ZnO and ternary CaO–ZnO–SiO2 systems
Source abstract
Abstract
Liquidus phase equilibrium data of the present authors for the CaO–ZnO–SiO system (as a part of research program on the characterization of the multicomponent PbO–ZnO–FeO–FeO-“CuO”-CaO-SiO system), combined with phase equilibrium and thermodynamic data from the literature, have been used to obtain a self-consistent set of parameters of the thermodynamic models for all phases. The modified quasichemical model is used for the liquid slag phase; lime (Ca,Zn)O, zincite (Zn,Ca)O, α- and α′-dicalcium silicate (Ca,Zn)SiO and tricalcium silicate (Ca,Zn)SiO are described within Bragg-Williams formalism; tridymite, cristobalite SiO, wollastonite, pseudowollastonite CaSiO, rankinite CaSiO, willemite ZnSiO, melilite (hardystonite) CaZnSiO and Ca–Zn feldspar CaZnSiO are treated as stoichiometric compounds. From these model parameters, the optimized ternary phase diagram is back calculated.
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Research context
OpenAlex topics: Metallurgical Processes and Thermodynamics · Metal Extraction and Bioleaching · Minerals Flotation and Separation Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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