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Simulation and application of post-combustion oxygen lance in a top-blown converter
Ironmaking & Steelmaking ( IF 2.1 ) Pub Date : 2022-06-19 , DOI: 10.1080/03019233.2022.2083928
Peng-Yuan Dong 1 , Shu-Guo Zheng 1 , Miao-Yong Zhu 1
Affiliation  

ABSTRACT

Flow field characteristics of conventional four-hole oxygen lance and single-flow post-combustion (PC) oxygen lance at steelmaking temperature are studied by numerical simulation, and the industrial trials are carried out in the 120 t top-blown converter to evaluate their metallurgical effects. The simulation results indicate that with the increase of ambient temperature, the potential core length of oxygen jet, jet velocity and radial width (jet diameter) increase. And the jet characteristics of PC oxygen lance are better than those of conventional lance in the radial and axial directions. The industrial trials show that, compared with the conventional lance, using the PC oxygen lance can shorten blowing time by 93 s, reduce actual oxygen consumption by 3.56 m3 t−1 and increase dephosphorization rate by 1.67%. Meanwhile, PC oxygen lance is better for slagging and solves the problem of splashing or drying caused by increasing the oxygen flow rate of the conventional lance.



中文翻译:

顶吹转炉后燃氧枪的仿真与应用

摘要

【摘要】:通过数值模拟研究了炼钢温度下常规四孔氧枪和单流式二次燃烧(PC)氧枪的流场特性,并在120 t顶吹转炉进行工业试验,评价其冶金性能。效果。仿真结果表明,随着环境温度的升高,氧气射流的潜在核心长度、射流速度和径向宽度(射流直径)增加。PC氧枪的射流特性在径向和轴向上均优于传统氧枪。工业试验表明,与传统氧枪相比,使用PC氧枪可缩短吹气时间93 s,减少实际耗氧量3.56 m 3 t −1提高脱磷率1.67%。同时,PC氧枪结渣效果更好,解决了传统氧枪因提高氧流量造成的飞溅或干燥问题。

更新日期:2022-06-19
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