摘要
通过50t顶底复吹转炉水力学模型实验，研究氧气顶底复吹转炉顶枪枪位、底吹气体流量对转炉熔炼过程中熔池搅拌和时间以及对冶炼过程的喷溅及熔池的冲击深度影响。结果表明，当模型枪位在120～210mm，实际枪位1．00～1．56m；模型底吹流量控制在0．38Nm^3／h，实际底吹流量控制在146～190Nm^3／h左右时，熔池混匀时间短，吹炼时喷溅量少。较浅的熔池冲击深度就可达到良好的搅拌效果，有利于避免冲击炉底。当冲击深度较大时，混匀时间反倒增加。
The effect of the distance of top lance and the flow rate of bottom blowing gas in the topbottom combined blowing oxygen converter on the molten pool stirring, mixing time, splash and pool impact depth was investigated. The results show that when the position of modeling lance, is 120- 210 mm, i.e. the position of virtual lance is 1.00- 1.56 m, and the modeling bottom blowing flow rate, is 0.38 Nm^3/h, i.e. virtual bottom blowing flow rate is 146- 190 Nm^3/h, there are shorter mixing time and less splash during converting. The shallower impact depth of molten pool can achieve a good stirring effect, thus avoid to attack the bottom of furnace. When the impact depth of molten pool is large, the mixing time will inversely increase.
出处
《铸造技术》
CAS
北大核心
2008年第7期877-879,共3页
Foundry Technology
关键词
复吹转炉
水力学模型
混匀时间
Combined blowing converter
Hydromechanics model
Mixing time
