RH-PTB真空精炼装置内粉剂混合特性的水模型研究  

A Study of Water Model on Mixing Characteristics of Powder Injected through Top Lance in RH-PTB Vacuum Refining Unit

作　　者：杜成武[1] 朱苗勇[1] 潘时松[1] 郑淑国[1] 

机构地区：[1]东北大学材料与冶金学院,沈阳110004

出　　处：《特殊钢》2005年第5期16-18,共3页Special Steel

基　　金：国家技术创新资助项目(01BK-098-02-01);辽宁省教育厅高校科学研究资助项目(2004D271)

摘　　要：根据相似理论,用1∶9水模型钢包(直径0.43m,水面高度0.45m)模拟RH-PTB真空精炼水冷顶枪喷粉技术,研究顶枪气量、上升管提升气量、顶枪枪位高度对粉剂混均时间的影响。结果表明,随顶枪气量增加,粉剂在液体中均混时间增加,并具有最大值;随提升气量增加,均混时间迅速减少,但当提升气量≥15L/min时,均混时间不再继续减少;顶枪枪位对均混时间有一定影响,实际操作中,应根据具体情况,调整顶枪枪位,以减少粉剂均混时间。Based on theory of similarity, the powder injected through top lance in RH-PrB vacuum refining has been simulated using 1：9 water model ladle （diameter- 0.43 m, height to water surface- 0.45 m） to study the effect of top lance gas flow rate, lifting gas flow rate of up-leg and height of top lance on injecting powder mixing time in liquid. The results showed that with top lance gas flow rate increasing, the injecting powder mixing time in liquid increased and had maximum value; with lifting gas flow rate of up-leg increasing, the mixing time quickly decreased and as lifting gas flow rate was ≥ 15 L/min, the mixing time was no longer decreasing; the effect of height of top lance on mixing time was definite, therefore in operation, according to specific circumstances to adjust height of top lance decreasing powder mixing time.

关 键 词：RH-PTB真空精炼 粉剂 均混时间 真空精炼装置 水模型 混合 相似理论 水面高度 实际操作 气量 

分 类 号：TF769[冶金工程—钢铁冶金]