Equilibrium Between Blast-Furnace Metal and Slag as Determined by Remelting

Filer, E. W.; Darken, L. S.

doi:10.1007/bf03397684

Cited by 4 publications

(13 citation statements)

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“…Comparing the MnO activity coefficient-basicity relationship calculated by Turkdogan [69] and Schenck and Neumann [70,71] with the recent results of Turkdogan, [73] significant differences were found. Because the recent study of Turkdogan [73] was based more on measured data, it was considered more reliable.…”

Section: Sio 2 -Al 2 O 3 -Mno-cao Quaternary Systemmentioning

confidence: 48%

“…[59,60,[69][70][71][72] Unfortunately, both the absolute values and the activity coefficient-composition relationship reported by Turkdogan [69] and Schenck, and Neumann [70,71] differ profoundly from those by Abraham et al [59] Mehta and Richardson, [60] and Filer and Darken. [72] These significant differences cannot be caused by the difference in temperature.…”

Section: Sio 2 -Al 2 O 3 -Mno-cao Quaternary Systemmentioning

confidence: 84%

“…Because the recent study of Turkdogan [73] was based more on measured data, it was considered more reliable. As a result, the calculated data of Turkdogan [69] and Schenck and Neumann [70,71] were not used in the present work.…”

Section: Sio 2 -Al 2 O 3 -Mno-cao Quaternary Systemmentioning

confidence: 94%

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Thermodynamic model for MnO-containing slags and gas-slag-metal equilibrium in ferromanganese smelting

Morris

Robertson

1998

Metall Mater Trans B

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The thermodynamics of MnO-containing slags was reviewed, and the properties of such slags were correlated by application of the cell model. This model, together with a previously developed unified interaction parameter model for the metal phase, was used to simulate the gas-slag-metal conditions in the hearth of a ferromanganese submerged arc furnace. The calculated slag and metal compositions and distribution of Mn, Si, and K between slag, metal, and fume were compared with plant data and satisfactory agreement was obtained. A steady recirculation of potassium inside the furnace was also predicted. For a potassium percentage in the raw materials of 0.63 pct, the amount of the recirculating potassium was about 160 kg per metric ton of ferromanganese. Due to the recirculation, the average potassium content in the solid mix coming down to the hearth could be as high as 7 pct.

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Section: Sio 2 -Al 2 O 3 -Mno-cao Quaternary Systemmentioning

confidence: 48%

Section: Sio 2 -Al 2 O 3 -Mno-cao Quaternary Systemmentioning

confidence: 84%

See 1 more Smart Citation

Thermodynamic model for MnO-containing slags and gas-slag-metal equilibrium in ferromanganese smelting

Morris

Robertson

1998

Metall Mater Trans B

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“…The compositions of slag and hot metal, as well as temperature in the hearth, play important roles on the sulfur partition between slag and liquid metal . High basicity of slag, higher temperature and longer contacting time between slag and metal inside the blast furnace would favor the pickup of sulfur from hot metal . Young and Clark, Meraikib, and Shankar, analyzed the compositions of tapped slag and hot metal.…”

Section: Introductionmentioning

confidence: 99%

“…Based on thermodynamic calculations, these authors concluded that the blast furnace slag and hot metal were near to equilibrium. On the other hand, non‐equilibrium between slag and hot metal was reported based on experimental investigation . Filer and Darken took samples of slag and hot metal during tapping.…”

Section: Introductionmentioning

confidence: 99%

Study on the Equilibrium of Slag and Hot Metal at Tapping with Respect to Sulfur

Condo

Lindstrom

Sichen

2016

steel research int.

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The blast furnace slag and hot metal are collected from the industrial trials. The collected slag and hot metal samples are re‐melted in a graphite crucible and stirred to investigate the sulfur partition at different stirring times. The experimental oxygen potential is well controlled to simulate the blast furnace conditions. The results show evidently that sulfur is transferred from hot metal to slag, which lead to an increase in the sulfur partition from its initial value (t = 0 min) of 26–33 at 1743 K, and from 23 to 37 at 1773 K after 30 min of slag‐metal reaction. The results strongly indicate non‐equilibrium between slag and hot metal at tapping. The sulfide capacities of the slag with typical composition of the slag at tapping are determined. On the basis of the sulfide capacity data, the theoretical sulfur partition is evaluated. The theoretically calculated partition further supports the finding obtained in the stirring experiments. This finding would suggest the possibility of improvement to increase the usage of blast furnace slag in desulfurization.

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Chemical Processes and Heat Loss in Cupolas

Landefeld

1988

Foundry Processes

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Equilibrium Between Blast-Furnace Metal and Slag as Determined by Remelting

Cited by 4 publications

References 0 publications

Thermodynamic model for MnO-containing slags and gas-slag-metal equilibrium in ferromanganese smelting

Thermodynamic model for MnO-containing slags and gas-slag-metal equilibrium in ferromanganese smelting

Study on the Equilibrium of Slag and Hot Metal at Tapping with Respect to Sulfur

Chemical Processes and Heat Loss in Cupolas

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