Abstract
To evaluate the effect of hydrogen-rich smelting on the softening and melting behaviors of the ferrous burden in a blast furnace, softening and melt-dripping performance tests were performed on the burden under different atmospheric ratios. The results showed that the softening start temperature decreased as the H2 ratio increased, giving the blast furnace a broader softening zone. As less FeO-containing low-melting-point phase was generated, the melting start temperature increased, the temperature ranges of the melting zone narrowed and moved to the high-temperature zone, and the permeability of the burden significantly improved. Comparing the slag-iron-coke interface characteristics demonstrated that the carbon content in its metallic iron decreased as the ratio of H2 increased.
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References
Ariyama T, Takahashi K, Kawashiri Y, Nouchi T (2019) Diversification of the ironmaking process toward the long-term global goal for carbon dioxide mitigation. J Sustain Metall 5(3):276–294
Ma K, Deng J, Wang G, Zhou Q, Xu J (2021) Utilization and impacts of hydrogen in the ironmaking processes: a review from lab-scale basics to industrial practices. Int J Hydrogen Energ 46(52):26646–26664
Yilmaz C, Wendelstorf J, Turek T (2017) Modeling and simulation of hydrogen injection into a blast furnace to reduce carbon dioxide emissions. J Clean Prod 154:488–501
Ma K, Xu J, Deng J, Wang D, Xu Y, Liao Z (2018) Transient interaction between reduction and slagging reactions of wustite in simulated cohesive zone of blast furnace. Metall Mater Trans B 49(5):2308–2321
Hayashi S, Iguchi Y (2005) Influence of several conditions on abnormal swelling of hematite pellets during reduction with H2-CO gas mixtures. Ironmak Steelmak 32(4):353–358
Wang H, Sohn H (2011) Effect of CaO and SiO2 on swelling and iron whisker formation during reduction of iron oxide compact. Ironmak Steelmak 38(6):447–452
Li F, Chu M, Tang J, Liu Z, Feng C, Tang Y (2017) Swelling behavior of high-chromium, vanadium-bearing titanomagnetite pellets in H2-CO-CO2 gas mixtures. JOM 69(10):1751–1758
Qie Y, Lyu Q, Liu X, Li J, Lan C, Zhang S (2018) Effect of hydrogen addition on softening and melting reduction behaviors of ferrous burden in gas-injection blast furnace. Metall Mater Trans B 49(5):2622–2632
Yang W, Zhou Z, Yu A, Pinson D (2015) Particle scale simulation of softening-melting behaviour of multiple layers of particles in a blast furnace cohesive zone. Powder Technol 279:134–145
Pan Y, Zuo H, Wang B, Wang J, Wang G, Liu Y (2020) Effect of reduction degree on cohesive zone and permeability of mixed burden. Ironmak Steelmak 47(3):322–327
Acknowledgements
The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (No. U1960205, No. 51804024).
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Lyu, B., Yang, F., Wang, G., Zuo, H., Xue, Q., Wang, J. (2023). Effect of Hydrogen-Rich Atmosphere on Softening and Melting Behaviors of Ferrous Burden in Blast Furnace Cohesive Zone. In: Fleuriault, C., et al. Advances in Pyrometallurgy. TMS 2023. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-22634-2_9
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DOI: https://doi.org/10.1007/978-3-031-22634-2_9
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