Abstract
The corrosion behavior of MgO-C refractory in electric arc furnace (EAF) slags was investigated by adopting a rotating immersion method (25 r/min) at 1823 K. The EAF entirely uses direct reduced iron as raw materials, and the change of refractory radius, MgO content in slag, and contact angle were studied at various slag basicity conditions. The results showed that the reduction of radius diminished as the slag basicity increased from 1.6 to 2.47. The slag with higher basicity has a larger contact angle compared to lower basicity slags. In addition, the MgO solubility increased with a decrease in basicity and an extension of exposure time and subsequently stabilized after 60 min. The reduction of FeOx and the formation of a magnesiowüstite (MW) intermediate layer occurred within the refractory. The MW layer is thicker in cases of low-basicity slag, but the slag penetration is deeper, leading to severe erosion.
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Acknowledgements
The present work was financially supported by National Natural Science Foundation of China (Grant No. U1960205) and China Minmetals Science and Technology Special Plan Foundation (Grant No. 2020ZXA01). The authors gratefully acknowledge their support.
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The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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Pang, Z., Zuo, H. (2024). Corrosion Behavior of MgO-C Refractory in the Electric Arc Furnace that Entirely Uses Direct Reduced Iron as Raw Materials. In: Alvear Flores, G.R.F., et al. Advances in Pyrometallurgy. TMS 2024. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-031-50176-0_12
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DOI: https://doi.org/10.1007/978-3-031-50176-0_12
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