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Towards more efficient control of the ironmaking blast furnace: modelling gaseous reduction of iron ores in H2-N2 atmosphere

Shuo Yao

Shuo Yao

Ansteel Iron & Steel Research InstituteAnshan, China
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Yao, Shuo
, 
Yuman Che

Yuman Che

Ansteel Iron & Steel Research InstituteAnshan, China
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Che, Yuman
 oraz 
Hamdy Mohamed

Hamdy Mohamed

Department of Civil and Architectural Engineering, College of Engineering, Applied Science UniversityBahrain
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Mohamed, Hamdy
  
22 sie 2022
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Data publikacji: 22 sie 2022
Zakres stron: 1033 - 1042
Otrzymano: 13 gru 2021
Przyjęty: 15 maj 2022
DOI: https://doi.org/10.2478/amns.2022.1.00010
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© 2022 Shuo Yao et al., published by Sciendo
This work is licensed under the Creative Commons Attribution 4.0 International License.

Fig. 1

Schematic illustration of gaseous reduction based on a sphere object.
Schematic illustration of gaseous reduction based on a sphere object.

Fig. 2

Macro-kinetic parameters obtained by the two USCMs based on regression analysis.
Macro-kinetic parameters obtained by the two USCMs based on regression analysis.

Fig. 3

Comparison of experimental data and results estimated by USCM with DAB.
Comparison of experimental data and results estimated by USCM with DAB.

Fig. 4

Comparison of experimental data and results estimated by USCM with DABC.
Comparison of experimental data and results estimated by USCM with DABC.

Fig. 5

Variation of concentration difference of N2 along diffusion path with reduction degree under conditions of Exp. 2.
Variation of concentration difference of N2 along diffusion path with reduction degree under conditions of Exp. 2.

Fig. 6

Comparison of H2 concentration at reaction interface between different USCMs.
Comparison of H2 concentration at reaction interface between different USCMs.

Fig. 7

Comparison of H2O concentration at reaction interface between different USCMs.
Comparison of H2O concentration at reaction interface between different USCMs.

Fig. 8

Comparison of chemical driving force between different USCMs.
Comparison of chemical driving force between different USCMs.

Fig. 9

Influence of N2 fraction in bulk stream on hydrogen reduction of iron ores.
Influence of N2 fraction in bulk stream on hydrogen reduction of iron ores.

Main parameters of experiments regarding hydrogen reduction of wüstite pellets [13]_

Parameter Value
Exp. 1 Exp. 2 Exp. 3
YA,s, - 0.721 0.387 0.210
YC,s, - 0.279 0.613 0.790
YB,s, - 0
T, K 1273
P, Pa 101325
r0, mm 6.2
M, mol/m3 4.88 × 104
DAB, cm2/s 12.48 (at 1273 K)
DAC, cm2/s 11.43 (at 1273 K)
DBC, cm2/s 4.45 (at 1273 K)
K, - 0.673 (at 1273 K)
Język:
Angielski
Częstotliwość wydawania:
1 razy w roku
Dziedziny czasopisma:
Nauki biologiczne, Nauki biologiczne, inne, Matematyka, Matematyka stosowana, Matematyka ogólna, Fizyka, Fizyka, inne
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