Characterization of Phase Equilibria and Thermodynamics …
347
Fig. 5 Fluxing diagrams for multi-component lead slag smelting systems at fixed %PbO in slag.
a The pseudo-ternary section (ZnO + “FeO”)–CaO–SiO 2 showing the effect of CaO/SiO 2 on
liquidus temperature for a given Zn/Fe ratio in feed, b pseudo-ternary section ZnO–“FeO”–(CaO +
SiO 2 ) showing the variation of liquidus temperature with CaO/SiO 2 ratio in slag for a fixed Zn/Fe
ratio, c % solids at a 1200 °C for the process conditions given in (a), and d pseudo-ternary sections
of the ZnO–“FeO”–CaO–SiO 2 quaternary
complex reality of modern pyrometallurgical processes. Thermodynamics and phase
equilibria are the foundation of sophisticated models. Earlier thermodynamic simulations of lead processes are using the simplified thermodynamic database available
for copper drossing and the lead blast furnace.
The thermodynamic database developed by PYROSEARCH can be used together
with software products, such as FactSage, ChemApp, ChemSheet, and SimuSage.
Several examples of the use of thermodynamic modeling in copper systems are
reported. Again full details of references will be provided in [3].
347
Fig. 5 Fluxing diagrams for multi-component lead slag smelting systems at fixed %PbO in slag.
a The pseudo-ternary section (ZnO + “FeO”)–CaO–SiO 2 showing the effect of CaO/SiO 2 on
liquidus temperature for a given Zn/Fe ratio in feed, b pseudo-ternary section ZnO–“FeO”–(CaO +
SiO 2 ) showing the variation of liquidus temperature with CaO/SiO 2 ratio in slag for a fixed Zn/Fe
ratio, c % solids at a 1200 °C for the process conditions given in (a), and d pseudo-ternary sections
of the ZnO–“FeO”–CaO–SiO 2 quaternary
complex reality of modern pyrometallurgical processes. Thermodynamics and phase
equilibria are the foundation of sophisticated models. Earlier thermodynamic simulations of lead processes are using the simplified thermodynamic database available
for copper drossing and the lead blast furnace.
The thermodynamic database developed by PYROSEARCH can be used together
with software products, such as FactSage, ChemApp, ChemSheet, and SimuSage.
Several examples of the use of thermodynamic modeling in copper systems are
reported. Again full details of references will be provided in [3].