本文在对顶吹转炉内气体流动、燃烧、传热研究的基础之上，合理耦合了炉内液滴产生、运动及传热的模型，给出了一个较为全面的描述炉内燃烧与传热的总的数学模型应用该模型研究了美国常用的１８０ｔＢａｓｉｃＯｘｙｇｅｎＦｕｒｎａｃｅｓ（ＢＯＦ）炉内二次燃烧初期泡沫渣还未大量形成时的燃烧及传热情况，得出了在这一时期不同的二次氧枪设计（二次氧孔与主氧枪的夹角、二次氧孔距熔池的距离）与炉内二次燃烧率及热量传输效率之间的关系。同时也得出了不同的传热机制对传给熔池的总热量的贡献。这些结论对深入认识二次燃烧过程，改进二次燃烧设备，提高二次燃烧初期热量的利用有着重要的意义。该模型也可推广应用到炉内泡沫渣较低时任意冶炼时刻的二次燃烧的研究。
Based on the studies of the gas-flow, combustion and heat transfer in the top-blown converter, a general and coupling mathematical model has been proposed. The post-combustion ratio and heat-transfer efficiency in a 180t basic oxygen furnace (BOF) for the different design of oxygen lance were calculated by using this model. The obtained results are very important for understanding the post-combustion mechanism and improving the equipment of the post-combustion as well as raising the utilizing ratio of post-combustion heat. This model can be also extended to study the post-combustion at any time in the converter with a low foam slag layer.(Correspondent: LI Baowei, Department of Metallurgy, Baotou Institute of Iron and Steel, Baotou 014010)
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | HiraiM,TsujinoR,MukaiT,HaradaT,OmoriM,TransISIJ,1987 |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%