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机械真空泵组RH精炼过程优化模拟研究
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摘要
为了优化机械真空泵组RH精炼工艺,本文通过物理模拟来研究RH精炼过程,重点考察三个关键因素吹氩流量、浸渍管浸入深度和机械真空泵产生的真空度的变化对RH精炼循环流量和混匀时间的影响。结果发现,由于机械真空泵作用更加灵活,所产生的极限真空度很高,因此随着真空度增大,循环流量增大;循环流量随着吹氩流量的提高进一步增大;循环流量随浸渍管浸入深度的增加而增大,但幅度有限;均混时间随提升气体流量的增加有显著缩短的特点。本研究为后续控制循环流量与混匀时间,优化RH精炼过程打下基础。
In order to optimize the mechanical vacuum pump group RH refining process,in this paper,through the physical simulation to study the RH refining process,focusing on three key factors of blowing argon flow,and impregnated tube immersion depth and mechanical vacuum pump and the vacuum degree of the change of RH refining circulating flow and mixed mixing time of impact.It was found that due to the mechanical action of the vacuum pump is more flexible,generated by the limit vacuum degree is very high,so with the increase of the vacuum degree,increased circulation flow;flow circulation with blowing argon flow raise further increased;circulation flow rate with the dipping tube immersion depth increase and increase,but the range is limited;mixing time increased with significantly shortened the characteristics of gas flow to enhance the.This study for follow-up control loop flow and mixing uniform time,optimize the RH refining process lay a foundation.
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