Sulfide Capacity of CaO-SiO&lt;sub&gt;2&lt;/sub&gt;-FeO-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt;-MgO&lt;sub&gt;satd.&lt;/sub&gt; Slag

Park, Young Joo; Min, Dong Joon

doi:10.2355/isijinternational.isijint-2015-524

Cited by 19 publications

(2 citation statements)

References 28 publications

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“…This suggested that the sum of , and C was not strictly constant, corresponding to the researches from others, which occurred mainly because stability of S 2− also affected the sulphide capacity. Based on this, the activity coefficient of CaS was calculated through Equation (12) [28]. The influence of BaO on the activity of CaO and activity coefficient of CaS is displayed in Figure 3. where γ CaS and X CaS are the activity coefficient and mole fraction of CaS, respectively.…”

Section: Resultsmentioning

confidence: 99%

Viscosity and desulphurisation behaviour of CaO–SiO ₂ –MgO–Al ₂ O ₃ –BaO–MnO slag

Liu

Zuo

2023

Ironmaking & Steelmaking

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The influence of BaO on the structure, viscosity and sulfide capacity at 1500°C of CaO-SiO2-MgO-Al2O3-BaO-MnO slag was investigated comprehensively. The activity of O2− and activity coefficient of S2− were discussed, and the sulfur distribution ratio was deduced and analyzed from sulfide capacity. The results revealed that the viscosity increased slightly owing to an increase of BaO content, and the complexity of [SiO4]-tetrahedra and the connection between [SiO4]-and [AlO4]-tetrahedra structure were tighter. The sulfide capacity was lager due to the increased sum of basic component, but the increased range was weakened when BaO was more than 3wt-%. The activity of CaO increased and activity coefficient of CaS descended firstly and then enhanced, but the difference between logaCaO and logγCaS tended to be bigger as a function of BaO. The sulfur distribution ratio was in range of 40-50, similar to the variations of sulfide capacity.

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Section: Resultsmentioning

confidence: 99%

Viscosity and desulphurisation behaviour of CaO–SiO ₂ –MgO–Al ₂ O ₃ –BaO–MnO slag

Liu

Zuo

2023

Ironmaking & Steelmaking

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“…(6), respectively. These equations are obtained by activity data collection from FactSage 7.0 software[24] and linear fitting[25].…”

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The Influence of Sulfur Content on the Carbothermal Reduction of SiMn Slag

Tangstad

2018

Metall Mater Trans B

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This article examines the influence of sulphur content on the carbothermal reduction of MnO and SiO2 in SiMn slag by carbon black. The sulphur content in the synthetic slag is varied from 0 to 1.0 wt pct. Reduction experiments are carried out in a thermo-gravimetric (TG) furnace at 1873 K (1600 °C) under CO atmospheric pressure. The reduction rates are measured based on the weight loss data, and the samples are characterized by SEM/EDS and ICP-MS. The wetting property of slag on carbon black is also studied with the sessile drop technique. The reaction rate on the slagmetal interface is one order higher than on the slag-carbon interface. A small amount of sulphur (0.2 wt pct and 0.44 wt pct) accelerates the slag-metal reaction rate constant by 2.2 times and 4.2 times, respectively. Therefore, small amounts of sulphur in slag significantly improve the reduction of MnO and SiO2. The MnS precipitation phenomenon during slag cooling is studied by FactSage simulation and experimental verification.

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Evolution of Desulfurization and Characterization of Inclusions in Dual Alloy Ingot Processed by Electroslag Remelting

Liu

Zhang

et al. 2017

steel research int.

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Desulfurization and characterization of inclusions during ESR of dual alloy ingot were experimentally studied. The composition and inclusions in electrode and ESR ingot were analyzed by means of various analytical techniques. The results show that the size of inclusions in ingot is smaller and more uniform. The single larger (Mn,Cr)S inclusion (11.6 µm) is found in NiCrMoV electrode. But, no single (Mn,Cr)S inclusion is found in NiCrMoV and CrMoV zones in dual alloy ingot, whereas found in transition zone (TZ). The size of inclusions in TZ is larger than that in NiCrMoV and CrMoV zones due to the inclusions with a thicker (Mn,Cr)S layer and large (Mn,Cr)S inclusions in TZ. Thermodynamic calculations show that (Mn,Cr)S inclusions with high x(Mn)/x(Cr) can precipitate at the solidification front of TZ due to the enrichment of [Mn] and [S] in residual liquid steel. To eliminate (Mn,Cr)S inclusions, a deeper desulfurization is needed. The sulfur content decreases from 0.039 (mass pct) to 0.0171% in NiCrMoV zone and from 0.011 to 0.0017% in CrMoV zone. The gasifying desulfurization plays a dominate role, the ratio of gasifying desulfurization is 92.2%.

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Sulfide Capacity of CaO-SiO<sub>2</sub>-FeO-Al<sub>2</sub>O<sub>3</sub>-MgO<sub>satd.</sub> Slag

Cited by 19 publications

References 28 publications

Viscosity and desulphurisation behaviour of CaO–SiO ₂ –MgO–Al ₂ O ₃ –BaO–MnO slag

Viscosity and desulphurisation behaviour of CaO–SiO ₂ –MgO–Al ₂ O ₃ –BaO–MnO slag

The Influence of Sulfur Content on the Carbothermal Reduction of SiMn Slag

Evolution of Desulfurization and Characterization of Inclusions in Dual Alloy Ingot Processed by Electroslag Remelting

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Sulfide Capacity of CaO-SiO<sub>2</sub>-FeO-Al<sub>2</sub>O<sub>3</sub>-MgO<sub>satd.</sub> Slag

Cited by 19 publications

References 28 publications

Viscosity and desulphurisation behaviour of CaO–SiO 2 –MgO–Al 2 O 3 –BaO–MnO slag

Viscosity and desulphurisation behaviour of CaO–SiO 2 –MgO–Al 2 O 3 –BaO–MnO slag

The Influence of Sulfur Content on the Carbothermal Reduction of SiMn Slag

Evolution of Desulfurization and Characterization of Inclusions in Dual Alloy Ingot Processed by Electroslag Remelting

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Viscosity and desulphurisation behaviour of CaO–SiO ₂ –MgO–Al ₂ O ₃ –BaO–MnO slag

Viscosity and desulphurisation behaviour of CaO–SiO ₂ –MgO–Al ₂ O ₃ –BaO–MnO slag