唐钢薄板坯连铸中间包气幕挡墙研究

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Study on Tanggang FTSC Tundish with Gas Curtain

1. Tangshan Vocational College of Science and Technology, Tangshan 063000, Hebei, China;
2. Steelmaking and Rolling Plant No. 1 of Tangshan Iron and Steel Co., Ltd., Tangshan 063000, Hebei, China;
3. Puyang Punai Refractory Materials Co., Ltd., Puyang 457000, Henan, China

摘要: 以唐钢薄板坯连铸中间包为原型，设计了几种不同位置安装气幕挡墙的中间包方案。研究了不同方案的中间包流场和夹杂物的运动轨迹，表明气幕挡墙位置及流量可以改变中间包流场及夹杂物的运行轨迹。通过“刺激—响应”方法获得了“RTD曲线”，计算得到平均停留时间、死区、活塞区和混返区等参数。气幕挡墙的位置和吹气量等对其冶金效果会产生显著的影响，认为合理设计气幕挡墙可以改善中间包内钢水的流场，延长钢水停留时间，利于夹杂物的上浮。
- 连铸 /
- 中间包 /
- 气幕挡墙 /
- 流场 /
- 夹杂物上浮
Abstract: Taking Tanggang FTSC tudish as the prototype,tundish schemes with gas curtain installed in different position are designed. The research on flow fields of steel in the tundish and inclusion movement in different scheme shows that the gas flow rate and gas blowing position have noticeable effect on the flow fields and the inclusion movement. The parameters including T_av,V_dead,V_plug,and V_mix are obtained through RTD curve. It is believed that reasonably designed gas curtain can improve the flow fields of steel in the tundish,and the increase of residence time of steel in the tundish is favorable to the removal of the inclusions.
- continuous casting /
- tundish /
- gas curtain /
- flow /
- inclusion floating