Impact of antioxidants in MgO-C refractory on steel cleanliness and refractory degradation

被引：5

作者：

Malfliet, Annelies ^{[1
]}

Mazzon, Antonio ^{[1
]}

Otegbeye, Oluwabukunmi Omotola ^{[1
]}

Qiu, Zilong ^{[1
]}

Butin, Gaelle ^{[1
]}

Eliazord, Noemie ^{[2
]}

Willoughby, Craig ^{[2
]}

Touzo, Bruno ^{[2
]}

Guo, Muxing ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44 Box 2450, B-3001 Leuven, Belgium

[2] CALDERYS France, Route Troyes BP 93, F-51121 Sezanne, France

来源：

OPEN CERAMICS | 2023年 / 14卷

关键词：

Refractory; Antioxidants; Steel cleanliness; Corrosion;

D O I：

10.1016/j.oceram.2023.100352

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Magnesia-carbon (MgO-C) refractories are used in steelmaking processes as lining materials. We performed lab-scale tests at 1600 degrees C and a pO2 of 10-15 atm to determine the effect of Al and Si antioxidant level, time and slag composition on the amount and nature of inclusions in the steel and on the corrosion and infiltration of the refractory. In all steel samples, a pick-up of Al, Si and C was observed. For the refractories containing antioxi-dants, longer holding times seem to increase the number density of inclusions, especially in combination with a slag with lower MgO content. For the given experiments, the beneficial role of antioxidants against slag corrosion was not observed, possibly due to the low pO2, which prevented C oxidation. As both MgAl2O4 and SiC, formed in the refractory, react and dissolve in the slag infiltrating in the refractory, they do not play a protective role.

引用

页数：12

共 7 条

[1] Effect of Al antioxidant in MgO-C refractory on the formation of Al2O3-rich inclusions in high-carbon steel for saw wire under vacuum conditions [J].

Chen, L. ;

Chen, W. ;

Hu, Y. ;

Chen, Z. ;

Xu, Y. ;

Yan, W. .

IRONMAKING & STEELMAKING, 2018, 45 (03) :272-279

[2] The effect of antioxidants on the oxidation behaviour of magnesia-carbon refractory bricks [J].

Gokce, A. S. ;

Gurcan, C. ;

Ozgen, S. ;

Aydin, S. .

CERAMICS INTERNATIONAL, 2008, 34 (02) :323-330

[3]

Kasimagwa I., 2010, A Study of Slag Corrosion of Oxides and Oxide-Carbon Refractories during Steel Refining

[4] Slag conditioning effects on MgO-C refractory corrosion performance [J].

Luz, A. P. ;

Leite, F. C. ;

Brito, M. A. M. ;

Pandolfelli, V. C. .

CERAMICS INTERNATIONAL, 2013, 39 (07) :7507-7515

[5]

Shen X., 2019, IOP Conf. Ser. Mater. Sci. Eng., V68

[6]

Taffin C., 1994, INTERCERAM, V43, P354

[7]

Treadgold C., 2006, The Determination and Elimination of the Effect of Antioxidants in Magnesia-Carbon Bricks on Steel Composition and Inclusion Formation

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