Browsing by Subject "FactSage"

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Access status: Open Access ,
Opracowanie hybrydowego modelu procesu pozapiecowej rafinacji stali do oceny wybranych technologii metalurgicznych
(2007-01-29) (Data obrony: 2009-09-28) Kargul, Tomasz
Wydział Inżynierii Metali i Informatyki Przemysłowej
Determining the state of equilibrium in steel refining processes plays an important role in view of process intensification possibilities, process control and related economic effects. The main objective of this thesis is to elaborate hybrid model of steel refining technology in ladle furnace and argon blowing through lance. Hybrid model consist of two different mathematical models. Metal bath mixing is described by mathematical model which based on tank theory. Thermodynamic model was used to describe the equilibrium state in thin layer between slag and metal bath. This objective can be attained by using a software package containing suitable thermodynamic data base and computing software integrated witch it. Thermodynamic data were taken from FactSage software. Both thermodynamic and mixing models were connected in Delphi using SimuSage developer package The results of the hybrid model have been verified using an industrial database.
Access status: Open Access ,
Simulation of the effect of impurities in recycled silicon used for the for the production of ferrosilicon
(2025) Padhamnath, Pradeep; Migas, Piotr; Karbowniczek, Mirosław
Wydział Inżynierii Metali i Informatyki Przemysłowej
Decarbonization of steel making and allied processes have been receiving immense attention of researchers. Similarly, recycling of waste resources and conversion or recovery of useful materials from waste destined for landfills to mitigate environmental impact, is also an important area of research. Ferrosilicon (FeSi) is currently produced using carbothermic reduction and an energy intensive process. However, silicon (Si) from electronic wastes could be combined with scrap steel to produce FeSi. The Si from electronic waste will, however, contain some impurities such as Aluminium (Al), copper (Cu) and Tin (Sn), which could be incorporated into the FeSi produced from such Si. Hence, in this work the impact of the impurities on the properties of FeSi was investigated theoretically and systematically with the help of FactSage simulations. The impact of three major impurities associated with recycled Si (Al, Cu and Sn) were analysed when present individually and then all together. The analysis was done with the help of phase diagrams for solidification process occurring under equilibrium conditions. It was found that the impurities impact the proportion of the final phases and the melting and phase-transition temperatures. Further, the presence of different intermetallic phases could impact the mechanical properties of the alloy as well. The presence of three impurities together with Fe and Si leads to a complex multicomponent system. While further experiments are needed to identify the actual phases formed during such process, this work provides as framework for carrying out such experiments in the future.
Access status: Open Access ,
Theoretical investigation of the impact of impurities in recycled silicon used for the production of ferrosilicon
(2024) Padhamnath, Pradeep; Migas, Piotr; Karbowniczek, Mirosław
Wydział Inżynierii Metali i Informatyki Przemysłowej