Effects of Refractory and Ladle Glaze on Evolution of Non-Metallic Inclusions in Al-Killed Steel

被引：39

作者：

Chi, Yun Guang ^{[1
]}

Deng, Zhi Yin ^{[1
]}

Zhu, Miao Yong ^{[1
]}

机构：

[1] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China

来源：

STEEL RESEARCH INTERNATIONAL | 2017年 / 88卷 / 09期

基金：

中央高校基本科研业务费专项资金资助; 美国国家科学基金会;

关键词：

alumina inclusions; calcium aluminate inclusions; glaze; refractory; spinel inclusions; SPINEL INCLUSIONS; CHEMICAL-REACTION; STAINLESS-STEEL; ALLOYED STEEL; MOLTEN STEEL; MECHANISM; SLAG; THERMODYNAMICS; BEHAVIOR; KINETICS;

D O I：

10.1002/srin.201600470

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Laboratory experiments are carried out to study the effects of different refractories (Al2O3 refractory, MgO refractory, and glazed Al2O3 refractory) on the formation of spinel inclusions and calcium aluminate inclusions. The results show that Al2O3 refractory has almost no influence on the inclusions in Al-killed steel, while MgO refractory and glazed Al2O3 refractory can help the formation of spinel inclusions from alumina inclusions. Meanwhile, glazed Al2O3 refractory can also contribute to the transformation of spinel inclusions into calcium aluminate inclusions. In contrast to ladle glaze, MgO refractory could supply more dissolved Mg to liquid steel. The formation of dissolved Mg and Ca holds the key for the evolution sequence of alumina, and spinel inclusions form earlier than calcium aluminate inclusions due to the faster formation of dissolved Mg. Besides, ladle glaze can also be a source of calcium aluminate inclusions.

引用

页数：10

共 31 条

[1] Metallurgy of plastic inclusions to improve fatigue life of engineering steels [J].

Bertrand, C ;

Molinero, J ;

Landa, S ;

Elvira, R ;

Wild, M ;

Barthold, G ;

Valentin, P ;

Schifferl, H .

IRONMAKING & STEELMAKING, 2003, 30 (02) :165-169

[2] Ladle glaze: major source of oxide inclusions during ladle treatment of steel [J].

Beskow, K ;

Sichen, D .

IRONMAKING & STEELMAKING, 2004, 31 (05) :393-400

[3] A study on the mechanism of reaction between refractory materials and aluminium deoxidised molten steel [J].

Brabie, V .

STEEL RESEARCH, 1997, 68 (02) :54-60

[4]

Brabie V., 1996, ISIJ Int, V36, pS109

[5] Formation and Evolution of Non-Metallic Inclusions during Deoxidation by Al Addition in BOF Crude Steel [J].

Chi, Yunguang ;

Deng, Zhiyin ;

Zhu, Miaoyong .

STEEL RESEARCH INTERNATIONAL, 2017, 88 (04)

[6]

Deng Z.Y., 2013, 8 PAC RIM INT C ADV, P753

[7] Effect of Refractory on Nonmetallic Inclusions in Al-Killed Steel [J].

Deng, Zhiyin ;

Zhu, Miaoyong ;

Du Sichen .

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE, 2016, 47 (05) :3158-3167

[8] Evolution Mechanism of Non-metallic Inclusions in Al-Killed Alloyed Steel during Secondary Refining Process [J].

Deng, Zhiyin ;

Zhu, Miaoyong .

ISIJ INTERNATIONAL, 2013, 53 (03) :450-458

[9] Dissolution Behavior of Mg from MgO into Molten Steel Deoxidized by Al [J].

Harada, Akifumi ;

Miyano, Gaku ;

Maruoka, Nobuhiro ;

Shibata, Hiroyuki ;

Kitamura, Shin-ya .

ISIJ INTERNATIONAL, 2014, 54 (10) :2230-2238

[10] Improvement of castability and anality of continuously cast steel [J].

Janke, D ;

Ma, ZT ;

Valentin, P ;

Heinen, A .

ISIJ INTERNATIONAL, 2000, 40 (01) :31-39

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