底吹氩过程LF炉盖内气体流动的数值模拟

特殊钢 ›› 2010, Vol. 31 ›› Issue (2): 10-13.

底吹氩过程LF炉盖内气体流动的数值模拟

储莹¹, 郭汉杰¹, 杨学民²

1 北京科技大学冶金与生态工程学院，北京100083；
2 中国科学院过程工程研究所多相复杂系统国家重点实验室，北京100190

收稿日期:2009-09-16 出版日期:2010-04-01 发布日期:2022-11-15
作者简介:储莹(1986-),女,研究生，炼钢过程中的热力学和动力学及数值模拟。郭汉杰,教授，北京科技大学冶金与生态工程学院。

Numerical Simulation of Gas Flow in Ladle Furnace Lid during Bottom Argon Blowing

Chu Ying¹, Guo Hanjie¹ , Yang Xuemin²

1 Metallurgical and Ecological Engineering School, University o£ Science and Technology, Beijing 100083 ；
2 State Key Lab of Multiphase Complex System of Process Engineering, Institute of Process Engineering,Chinese Academy of Sciences, Beijing 100190

Received:2009-09-16 Published:2010-04-01 Online:2022-11-15

摘要/Abstract

摘要： 基于流体模型和湍流修正模型,借助流体工程模拟软件Fluent 6.3.26对吹氩过程中210 t LF精炼炉盖内气体的流动、混合和质量、动量传输进行了计算模拟,分析了其流动行为和分布状态。结果表明,随钢包净空高度增加,液面上部氩气回旋区扩大,"死区"减小;当氩气流量增至500 L/min时,吹氩孔位于0.68 R的盖内流动效果优于0.3 R的效果;正常工作状态下的合理抽气压力为-150 Pa;在合理的抽气压力和吹氩孔位置的情况下,300 L/min的氩气流量基本可以满足要求,强搅拌时可增至500 L/min。

Abstract:

Based on fluid model and turbulent correct model, the gas flow, mix and transmission of mass and momentum in 210 t ladle refining furnace lid has been simulated and calculated by using flow engineering simulation software Fluent 6. 3.26 to analyze its flow behavior and distribution condition. Results show that with increasing the height of free board in ladle, the circulating region of Ar gas above liquid surface enlarges and the "dead regionn decreases； as Ar flow rate increases to 500 L/min, the flow effect in lid with blowing Ar hole at 0. 68 R is better than that at 0. 3 R; with normal work conditions, the reasonable air exhausting pressure is - 150 Pa; and in conditions with rational air exhausting pressure and blowing Ar location, the Ar flow rate 300 L/min basically meet the requirement, in strong stirring it is available to increase up to 500 L/min.

Key words: , 210 t Ladle Furnace, Argon Flow Rate, Gas Flow in Lid, Numerical Simulation

储莹, 郭汉杰, 杨学民. 底吹氩过程LF炉盖内气体流动的数值模拟[J]. 特殊钢, 2010, 31(2): 10-13.

Chu Ying, Guo Hanjie, Yang Xuemin. Numerical Simulation of Gas Flow in Ladle Furnace Lid during Bottom Argon Blowing[J]. Special Steel, 2010, 31(2): 10-13.