Case Studies
Equilibrium Calculation of Oxides
Calculating temperature-dependent variations in the SiO2-CaO-Al2O3 system. This calculation is equivalent to the "normal + transition" mode of the FactSage Equilib module. Using the Matplotlib package, you can generate the following plots (Database: FToxid).
Simple Process Calculation
A simple model of an electric arc furnace used for producing silicon metal. The furnace interior is divided vertically into four stages, with materials fed from the top and heating applied from the bottom. The calculation shows the charged silica (SiO2) being reduced by carbon to yield molten silicon (Si(liq)). Because the gas flow opposes the liquid and solid flows in this model, the solution is obtained through iterative convergence calculations (Database: FactPS).
Using the Virtual Element Qa
An example of a calculation using the virtual element Qa, implemented in FactSage 8.1 and later. In this example, the amount of Qa represents the total quantity of the molten alloy. Initially, the Mg-Zn alloy is assumed to be in the liquid phase (Qa = 1 mol). At equilibrium, Mg and Zn evaporate into the gas phase (Qa = 0 mol). The calculation illustrates that Zn transitions to the gas phase more rapidly than Mg during the evaporation process (Database: FactPS, FTlite).
