260吨转炉底吹性能优化的实验研究  

Experimental analysis on the optimization of bottom blowing system for 260 t converter

作　　者：陈科晓 庞洪轩 刘广强 郑冰 徐东[3,5] CHEN Kexiao;PANG Hongxuan;LIU Guangqiang;ZHENG Bing;XU Dong(Technology Innovation Center for Wear Resistant Steel Plate of High plasticity and High Toughness of Hebei Province,Hebei Puyang Iron and Steel Co.,Ltd.,Handan 056305,Hebei,China;Engineering Research Center for High Toughness Wind Tower Steel of Hebei Province,Hebei Puyang Iron and Steel Co.,Ltd.,Handan 056305,Hebei,China;Technology Innovation Center for High Quality Cold Heading Steel of Hebei Province,Hebei University of Engineering,Handan 056038,Hebei,China;Technology Innovation Center,Meson Technology(Hebei)Co.Ltd.,Handan 056038,Hebei,China;Hebei University of Engineering,Whole Processes of High Quality Fastener Application Technology Research Center of Universities in Hebei Province,Handan 056038,Hebei,China)

机构地区：[1]河北普阳钢铁集团,河北省高塑韧性耐磨钢板技术创新中心,河北邯郸056305 [2]河北普阳钢铁集团,河北省高韧性风塔钢工程研究中心,河北邯郸056305 [3]河北工程大学,河北省高品质冷镦钢技术创新中心,河北邯郸056038 [4]介子科技(河北)有限公司,技术中心,河北邯郸056038 [5]河北工程大学,河北省高校高端紧固件全流程应用技术研发中心,河北邯郸056038

出　　处：《四川冶金》2023年第6期4-8,共5页Sichuan Metallurgy

基　　金：河北省重点研发计划项目军民科技协同创新专项(22351001D);邯郸市科学研究计划重点项目(21122015004);河北省高等学校科学技术研究项目资助(CXY2023004)。

摘　　要：良好的转炉底吹元件的布置方式有利于熔池搅拌,加快炉内反应进行。以某钢厂260吨复吹转炉为研究对象,基于相似原理建立底吹物理模型。通过水模型实验测得不同底吹布置在各工况下的混匀时间,考察底吹喷孔之间角度、距离及底吹流量对熔池混合效率的影响。结果表明:随着底吹流量增加,混匀时间整体出现降低趋势;随着外侧底吹孔逐渐远离炉底中心,喷孔间15°布置在0.4-0.7D时混匀时间先降低后升高,而当底吹孔间30°布置时混匀时间则持续升高。15°布置方案熔池的混合效果整体好于30°布置方案;底吹孔之间15°布置在0.6D上的A2布置方案混匀时间最短,更利于整个熔池的搅拌。The preferable arrangement of the bottom blowing elements is beneficial to the stirring effect and the chemical reaction inside the molten bath.Base on the similarity principle,a 260 t converter in a steel plant was taken as the prototype to establish the physical model in a scale of 1:7.The mixing times of diverse bottom blowing distributions and operation conditions were measured by the water model experiment.Besides,the influence of the angle and distance among bottom teams on the mixing efficiency of liquid bath under different blowing gas intensities has been discussed in this article.The results indicate that the mixing time decreases with the growth of gas flow rate.As the location of the outer teams gradually away from the center of the vessel bottom,the declination of the mixing time was observed followed by the elevation with the angle of 15°between teams and the position of 0.4-0.7D.However,when the angle was set as 30°,the mixing time continued to increase.The agitating effect for the molten pool in the scheme of 15°is better than that of in the scheme of 30°.And the shortest mixing time was discovered in the scheme A2 with the angle of 15°and the location of 0.6D,which is more conducive to improve the stirring strength of the bottom blowing gas.

关 键 词：大型转炉 底吹系统 混匀时间 水模实验 

分 类 号：TF4[冶金工程—钢铁冶金]