气幕挡墙中间包夹杂物去除的水模型研究

特殊钢 ›› 2009, Vol. 30 ›› Issue (1): 7-9.

气幕挡墙中间包夹杂物去除的水模型研究

黄奥¹，汪厚植¹，顾华志¹，张美杰，陶晓林²，胡铁山²

1武汉科技大学湖北省耐火材料与高温陶瓷重点实验室，武汉430081 ；
2武汉钢铁股份有限公司炼钢总厂三分厂，武汉430082

收稿日期:2008-07-10 出版日期:2009-02-01 发布日期:2022-11-29
作者简介:黄奥(1982-),男，博士生,2004年武汉科技大学毕业，冶炼新材料用耐火材料、冶炼过程数学物理模拟。
基金资助:
国家科技攻关计划资助项目(2005BA325C)

A Study on Water Modeling of Inclusion Removal in Tundish with Gas Curtain

Huang Ao¹ , Wang Houzhi¹ , Gu Huazhi¹ , Zhang Meijie¹ , Tao Xiaolin² ， Hu Tieshan²

1 Wuhan University of Science and Technology, the Hubei Province Key Laboratory of Refractories and Ceramics, Wuhan 430081 ；
2 No3 Steel Plant of WISCO, Wuhan 430082

Received:2008-07-10 Published:2009-02-01 Online:2022-11-29

摘要/Abstract

摘要： 以连铸1500mm×250mm板坯的中间包为原型,几何相似比1/3,采用自制多孔透气砖进行中间包底吹气的水模型试验。结果表明,气幕挡墙中间包中,夹杂物通过斯托克斯机理上浮,气泡吸附和钢液上扬流动而上浮去除;当吹气量≥0.08m~3/h,距入口中心533～800mm处形成有效的气幕挡墙,显著改善钢液流动性,夹杂物去除率由不吹气的44.86%增加至72.86%,并改善小颗粒夹杂物的去除。工业试验表明,采用气幕挡墙,使T[O]降低12%以上。

Abstract: With prototype of tundish for concasting slab 1 500 mm x 250 mm and using geometric similar ratio 1/3, the water modeling test of tundish bottom gas blowing has been carried out by self-made porous plug. Results showed that in tundish with gas curtain the inclusion removed by mechanisms of Stokes floating, absorption on bubble and action of liquid flowing up； as gas blowing rate ≥O. 08 m³/h the available gas curtain formed at the distance 533 〜800 mm from inlet center to obviously improve hquhl flow characteristic, the inclusion removal ratio increased to 72. 86% from original 44. 86% without gas curtain and the removal of small size inclusion markedly improved. Commercial pilot production showed that with using gas curtain the T[O] decreased by more than 12%.

黄奥, 汪厚植, 顾华志, 张美杰, 陶晓林, 胡铁山. 气幕挡墙中间包夹杂物去除的水模型研究[J]. 特殊钢, 2009, 30(1): 7-9.

Huang Ao , Wang Houzhi , Gu Huazhi , Zhang Meijie , Tao Xiaolin , Hu Tieshan. A Study on Water Modeling of Inclusion Removal in Tundish with Gas Curtain[J]. Special Steel, 2009, 30(1): 7-9.