120t转炉底吹供气系统控制模型与应用效果  

Control Model of Gas Supply System of Bottom Blowing for 120t Converter and Application Effect

作　　者：汪成义[1,2] 吴巍 杨利彬[1] 赵舸[1] 罗啟泷[1] 姜周华[2] Wang Chengyi;Wu Wei;Yang Libin;Zhao Ge;Luo Qilong;Jiang Zhouhua(Metallurgical Department,Central Iron and Steel Research Institute,Beijing 100081;School of Metallurgy,Northeasterm University,Shengyang 10004)

机构地区：[1]钢铁研究总院冶金工艺研究所,北京100081 [2]东北大学冶金学院,沈阳110004

出　　处：《特殊钢》2020年第3期10-14,共5页Special Steel

基　　金：国家重点研发计划(2017YFB0304000);国家自然科学基金(51674092&51704080&51874102)资助。

摘　　要：根据鞍钢120 t转炉底吹供气系统的应用情况,基于PID调节算法建立了转炉底吹系统控制模型,可以实现供气管道气体流量的迅速、准确、稳定控制,满足生产工艺要求,使底吹元件在炉役期内可以保持稳定的形态和良好的透气性能,不易堵塞。该转炉进行底吹供气控制模型、设备和工艺优化后,钢水终点碳氧积由0.003 16降低为0.002 73,终点炉渣T.Fe含量降低1.69%,吨钢降低成本12.2元,经济效益显著。According to application of gas supply system of bottom blowing for 120 t converter at Angang Steel,the BOF bottom blowing control model has been established by PID control arithmetic method to realize the rapid,accurate and stable control of gas flow in gas supply pipeline,and meet the requirements of the production process,which could keep the bottom blowing element under stable & good shape and air permeability and not easy been blocked during the converter service period.With the bottom blowing control model,equipment and technology optimized,the end-point [% C] ·[%O] is reduced from 0.003 16 to 0.002 73,the end-point T.Fe content in slag is reduced by 1.69%,the economic benefit of a ton steel is 12.2 yuan/t to achieve the effect of improving quality and reducing cost.

关 键 词：120T转炉 底吹系统 炉底厚度 碳氧积 炉渣T.Fe 

分 类 号：TF341.1[冶金工程—冶金机械及自动化]