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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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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