Recent Developments in Factsage Thermochemical Software and Databases

Bale, C. W.; Bélisle, Patrick; Decterov, Sergei A.; Eriksson, G.; Gheribi, Aïmen E.; Hack, Klaus; Jung, In‐Ho; Melançon, J.; Pelton, Arthur D.; Robelin, Christian

doi:10.1002/9781118889657.ch11

Cited by 30 publications

(58 citation statements)

References 5 publications

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“…The phenomena causing the deformation of the samples is discussed on the basis of the observations in their microstructure. Phase diagrams for the 5-component FeO-SiO 2 -CaO-MgO-Al 2 O 3 systems and liquid oxide phase fraction percentage calculations from FactSage 34) are used to clarify the softening behaviour of the pellets and the sinter.…”

Section: Borinder and Bimentioning

confidence: 99%

Evaluating the Reduction-Softening Behaviour of Blast Furnace Burden with an Advanced Test

et al. 2016

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A ferrous burden loses its permeability in the cohesive zone of a Blast Furnace (BF), where the iron burden materials soften and melt. A tailor-made, high-temperature furnace named ARUL (Advanced Reduction under Load) was used here to study the reduction-softening behaviour of acid and olivine pellets and basic sinter under simulated BF gas, temperature and pressure conditions.The ARUL test showed the best reduction-softening properties for the basic sinter. The sinter sample resisted up to 1 329°C and achieved a reduction degree of 90.2% until a gas-impermeable structure was formed in a packed bed, whereas the acid pellet lost its permeability at 1 160°C and only reduced to a reduction degree of 48.7%. The olivine pellet had intermediate reduction-softening properties with a final temperature of 1 252°C and a final reduction degree of 68.7%. The differences between the test materials were assessed as being caused mainly by different chemistry, but it was also revealed that the sinter sample remained its macro-porosity markedly better in relation to the pellets, providing routes for reducing gases.The experimental results were compared to the phase diagrams calculated with the computational thermodynamic software FactSage. Phase diagrams for the 5-component FeO-SiO 2 -CaO-MgO-Al 2 O 3 systems with constant CaO, MgO and Al 2 O 3 contents were used to estimate the formation of liquid phases in the test materials. The computed phase diagrams gave an estimate of the liquid formation; however, some limitations were also found in the utilization of the computations because of the need to define the system in certain simplicity.

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Section: Borinder and Bimentioning

confidence: 99%

Evaluating the Reduction-Softening Behaviour of Blast Furnace Burden with an Advanced Test

et al. 2016

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“…Figure 17a shows the superimposed Cr-S-O and Si-S-O predominance diagrams calculated using Factsage. 26 Here, the metal activities have been approximated as a Cr = 0.21, and a Si = 9.7 × 10 −3 . For the Fe-20Cr-(20Ni)-0.5Si alloys studied, the thermodynamic phase stability in a given atmosphere can be predicted from the predominance phase diagrams.…”

Section: Discussionmentioning

confidence: 99%

Sulfur Effect on Corrosion Behavior of Fe-20Cr-(Mn, Si) and Fe-20Ni-20Cr-(Mn, Si) in CO₂-H₂O at 650°C

Nguyen

Zhang

et al. 2015

J. Electrochem. Soc.

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Model alloys, , and these alloys doped with 0.5% Si or 2% Mn, were exposed to Ar-20%CO 2 -20%H 2 O-(0%, 0.1%, 0.5%, 1.0%)SO 2 gas mixtures at 650 • C. The reaction kinetics were analyzed gravimetrically and the reaction products were characterized using X-ray diffraction, scanning electron microscopy, and transmission electron microscopy. In sulfurfree gases, thick iron-rich oxide scales and internal carbides formed on alloys of Fe-20Cr-(2Mn) and Fe-20Cr-20Ni-(0.5Si). Additions of SO 2 promoted the maintenance of protective chromia scale on these alloys, but had no benefit for the already highly corrosion resistant Fe-20Cr-0.5Si and Fe-20Cr-20Ni-2Mn alloys. The role of sulfur in retarding carburization is discussed with reference to its strong adsorption on oxide-metal interfaces and oxide grain boundaries.

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“…[14] or Thermo-Calc. [15] Once these activities are known, the activity of aluminum can then be calculated from Eq.…”

Section: Activity Of Al In Fesi50 At 1823 K (1550°c)mentioning

confidence: 99%

“…[3]. Activities of Al calculated using both software are presented in Table II along with the activity data calculated using both FactSage [14] and Thermo-Calc. [15] FTlite database was used in FactSage [14] to calculate the Si activity and TCFE8 (Steels/ Fe Alloys v8.0) in Thermo-Calc.…”

Section: Activity Of Al In Fesi50 At 1823 K (1550°c)mentioning

confidence: 99%

“…Activities of Al calculated using both software are presented in Table II along with the activity data calculated using both FactSage [14] and Thermo-Calc. [15] FTlite database was used in FactSage [14] to calculate the Si activity and TCFE8 (Steels/ Fe Alloys v8.0) in Thermo-Calc. [15] For the calculation of the activities of the oxides, FToxid was used in FactSage [14] and TCOX5 (Metal Oxide Solutions v5.1) in Thermo-Calc.…”

Section: Activity Of Al In Fesi50 At 1823 K (1550°c)mentioning

confidence: 99%

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Experimental Study on the Activities of Al and Ca in Ferrosilicon

Tomé-Torquemada

Glaser

Hildal

et al. 2017

Metall Mater Trans B

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Experiments were carried out to determine the activities of Al and Ca in liquid ferrosilicon (with about 50 wt pct Si) at 1823 K (1550°C) in their dilution ranges. Liquid FeSi50 and SiO 2 -Al 2 O 3 -CaO slag were stirred mechanically in a graphite crucible to enhance the transfer of Al and Ca between the two phases. The stirring time for the two phases to reach equilibrium was studied. It was found that a time of 45 minutes was long enough to reach the slag-metal equilibrium. The activities of Al and Ca in the ferrosilicon alloy were calculated based on the compositions of the two liquid phases. The activity coefficients obtained for Al and Ca in the liquid FeSi50 at 1823 K (1550°C) were found to be nearly constant in the composition range studied.

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Recent Developments in Factsage Thermochemical Software and Databases

Cited by 30 publications

References 5 publications

Evaluating the Reduction-Softening Behaviour of Blast Furnace Burden with an Advanced Test

Evaluating the Reduction-Softening Behaviour of Blast Furnace Burden with an Advanced Test

Sulfur Effect on Corrosion Behavior of Fe-20Cr-(Mn, Si) and Fe-20Ni-20Cr-(Mn, Si) in CO₂-H₂O at 650°C

Experimental Study on the Activities of Al and Ca in Ferrosilicon

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Recent Developments in Factsage Thermochemical Software and Databases

Cited by 30 publications

References 5 publications

Evaluating the Reduction-Softening Behaviour of Blast Furnace Burden with an Advanced Test

Evaluating the Reduction-Softening Behaviour of Blast Furnace Burden with an Advanced Test

Sulfur Effect on Corrosion Behavior of Fe-20Cr-(Mn, Si) and Fe-20Ni-20Cr-(Mn, Si) in CO2-H2O at 650°C

Experimental Study on the Activities of Al and Ca in Ferrosilicon

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Sulfur Effect on Corrosion Behavior of Fe-20Cr-(Mn, Si) and Fe-20Ni-20Cr-(Mn, Si) in CO₂-H₂O at 650°C