Variation of Non-Metallic Inclusions Composition in X80 Pipeline Steel Refined by High Basicity Slag

被引：0

作者：

Li Qiang ^{[1
]}

Wang Xin-hua ^{[1
]}

Li Hai-bo ^{[2
]}

Huang Fu-xiang ^{[1
]}

Yang Jun ^{[1
]}

Wang Wan-jun ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Met & Ecol, Beijing 100083, Peoples R China

[2] Shousteel Res Inst, Beijing 100039, Peoples R China

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2011年 / 18卷

关键词：

transformation of inclusions; high basicity top slag; removal of inclusions; X80 pipeline steel; OXIDE;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The transformation of inclusions was studied when control technology of refining top slag in ladle furnace was used in X80 pipeline steelmaking. Sufficient amount of aluminum was added to experimental heats for final deoxidation during BOF tapping, and then the refining top slag with high basicity and strong reducibility was adopted to transform Al(2)O(3) to inclusions with low melting point. The results show that the composition of inclusions changes in order of "Al(2)O(3) -> MgO-Al(2)O(3) system -> CaO-MgO-Al(2)O(3) system -> CaO-Al(2)O(3) system". And the inclusions after LF refining are liquid or semi-liquid state at the temperature of steelmaking, which are easily removable to obtain high cleanliness steel by collision, agglomeration and flotation.

引用

页码：563 / 566

页数：4

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