摘要
以某厂210t RH为原型,建立模型与原型尺寸比为1∶4的物理模型。测量了不同吹气量、不同浸渍管插入深度及不同真空室液位高度等操作工艺条件下的混匀时间,讨论了吹气孔堵塞对RH混匀的影响。结果表明:当吹气量大于800L/min、浸渍管浸入深度大于560mm、真空室液位高度大于315mm、吹气孔堵塞不大于3个时均有利于RH钢液混匀。在试验基础上对现场操作工艺进行改进,提高了RH精炼效率。
A water model of 1/4 linear scale for 210 t RH has been established. The mixing time of different number of blocked nozzles and different processing parameters such as the lift gas flow rate, dipping depth and liquid level of vacuum chamber was measured. The results show that when the lift gas flow rate is larger than 800 L/min, the dipping depth is over 560 mm, the liquid level of the vacuum chamber exceeds 315 mm and the number of blocked nozzles are not more than 3 the hot metal in the RH chamber is better mixed. On the basis of the experiments the on-site operating processes are further improved and thus the RH refining efficiency is raised accordingly.
出处
《炼钢》
CAS
北大核心
2011年第4期58-60,64,共4页
Steelmaking
