鱼雷罐斜插式喷吹脱硫水模试验研究
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摘要
通过水力学模型试验,分析了鱼雷罐斜插式喷吹脱硫过程中熔池内的流动状态,研究了熔池不同区域之间动力学条件的差异以及工艺参数对熔池混匀时间的影响规律。结果表明:斜插式喷吹脱硫工艺中,喷吹气体的上浮状态仍然呈垂直向上形态,但熔池内液体的循环运动呈现明显的不对称形;鱼雷罐两侧端部死区的脱硫动力学条件差别较大,导致两区域铁水脱硫效果不同,容易引起铁水回硫;试验条件下,随着喷吹气体流量和喷枪插入深度的增大,喷吹气体搅拌动能的增加,熔池内液体的整体混匀时间逐渐减小。
The flow state and the difference of dynamic conditions between areas in ATH was studied.And the effects of process parameters on mixing time was also researched by hydraulic model experiment.The experiment results show that though the blowing gas-liquid is vertical upward,circulating flow in molten pool turns apparently dissymmetrical;the obviously difference between dynamic conditions of local areas,leading different desulfurization effect,is liable to cause resulphurization;with the increase of gas flow and deepending of injection lance,the mixing time shorted gradually for increasing stirring energy.
The flow state and the difference of dynamic conditions between areas in ATH was studied.And the effects of process parameters on mixing time was also researched by hydraulic model experiment.The experiment results show that though the blowing gas-liquid is vertical upward,circulating flow in molten pool turns apparently dissymmetrical;the obviously difference between dynamic conditions of local areas,leading different desulfurization effect,is liable to cause resulphurization;with the increase of gas flow and deepending of injection lance,the mixing time shorted gradually for increasing stirring energy.
引文
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[2]杨天均,高征凯,刘述临,等.铁水炉外脱硫的新进展[J].钢铁,1991(1):11-14.
[3]余志祥.现代转炉炼钢技术[J].炼钢,2001,17(1):13-18.
[4]王楠.浸入式喷粉铁水脱硫过程的模拟研究.[D].沈阳:东北大学,2000:11.
[5]刘炳宇.不同铁水脱硫工艺方法的应用效果[J].钢铁,2004,39(6):24-27.
[6]欧俭平,陈兆平,罗志国,等.鱼雷罐喷粉预处理传输动力学物理模拟(I):均混时间和粉剂穿透比研究[J].包头钢铁学院学报,2001,20(3):195-199.
[7]于学斌,朱志强,时启龙,等.320 t鱼雷罐内铁水流场的物理模拟[J].河南冶金,2006,14(增刊):37-40.
[8]于学斌,沈巧珍,于勇汉,等.一种冶金精炼喷粉用的顶喷枪:中国,CN22765910Y[P].2006-03-22.
[9]黄奥,汪厚植,顾华志,等.采用底吹技术辅助鱼雷罐铁水脱硫数模研究[C]//第4届中国金属学会青年学术年会论文集.北京:[出版者不详],2008:88-92.
[10]汪厚植,顾华志,黄奥,等.一种鱼雷罐喷吹辅助装置和工艺:中国,CN101445859A[P].2009-06-03.
[11]李江,胡铁山,王刚,等.混铁车多方位复合喷吹进行铁水预处理的方法及装置:中国,CN1461812A[P].2003-12-17.
[12]李明晖,欧阳德刚,邓品团,等.鱼雷罐倒T形喷吹脱硫水模试验研究[J].铸造技术,2012,33(5):585-587.
[13]欧阳德刚,朱善合,李明晖,等.铁水喷吹脱硫水模试验研究与进展[J].武钢技术,2011,49(1):50-54.