1 Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China 2 State Key Laboratory of Advance Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China
Comparison study of slag corrosion resistance of MgO–MgAl2O4, MgO–CaO and MgO–C refractories under electromagnetic field
1 Key Laboratory for Ecological Metallurgy of Multimetallic Mineral (Ministry of Education), School of Metallurgy, Northeastern University, Shenyang 110819, Liaoning, China 2 State Key Laboratory of Advance Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China
摘要 To illuminate the corrosion behavior of MgO-based refractories under electromagnetic field (EMF), herein, the slag corrosion and penetration resistance of MgO–MgAl2O4, MgO–CaO, and MgO–C refractories were investigated using the rotary immersion slag resistance test at 1873 K for 1 h. The results showed that the order of the good slag resistance of as-tested refractories was MgO–C > MgO–CaO > MgO–MgAl2O4. The EMF accelerated the corrosion and penetration of slag to the refractories, which caused the molten slag to be easier into the refractories by natural convection and Marangoni effect. In addition, the MgO–C refractories did not show an overwhelming advantage in slag resistance because EMF impeded the formation of the dense protection layer. Consequently, in view of the present results, the MgO–C refractories are still the most promising slag line material for refining furnace among MgO–MgAl2O4, MgO–CaO, and MgO–C refractories.
Abstract：To illuminate the corrosion behavior of MgO-based refractories under electromagnetic field (EMF), herein, the slag corrosion and penetration resistance of MgO–MgAl2O4, MgO–CaO, and MgO–C refractories were investigated using the rotary immersion slag resistance test at 1873 K for 1 h. The results showed that the order of the good slag resistance of as-tested refractories was MgO–C > MgO–CaO > MgO–MgAl2O4. The EMF accelerated the corrosion and penetration of slag to the refractories, which caused the molten slag to be easier into the refractories by natural convection and Marangoni effect. In addition, the MgO–C refractories did not show an overwhelming advantage in slag resistance because EMF impeded the formation of the dense protection layer. Consequently, in view of the present results, the MgO–C refractories are still the most promising slag line material for refining furnace among MgO–MgAl2O4, MgO–CaO, and MgO–C refractories.
Xin‑ming Ren,Bei‑yue Ma,Shi‑ming Li, et al. Comparison study of slag corrosion resistance of MgO–MgAl2O4, MgO–CaO and MgO–C refractories under electromagnetic field[J]. Journal of Iron and Steel Research International, 2021, 28(1): 38-45.
2021, Vol. 28 
