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Meeting 2024 TMS Annual Meeting & Exhibition
Symposium Advances in Pyrometallurgy: Furnace Containment
Presentation Title Corrosion Behavior of MgO-C Refractory in the Electric Arc Furnace that Entirely Uses Direct Reduced Iron as Raw Materials
Author(s) Zhuogang Pang, Haibin Zuo
On-Site Speaker (Planned) Zhuogang Pang
Abstract Scope The corrosion behavior of MgO-C refractory in electric arc furnace (EAF) slags was investigated by adopting a rotating immersion method (25r/min) at 1823K. 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.
Proceedings Inclusion? Planned:
Keywords Iron and Steel, Phase Transformations, Composites


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