KR法铁水脱硫搅拌流场的数值分析  

Numerical analysis of stirring flow field of hot metal desulfurization by KR method

作　　者：孙贞贞 但斌斌[1,2] 牛清勇 欧阳德刚 容芷君[1,2] SUN Zhenzhen;DAN Binbin;NIU Qingyong;OUYANG Degang;RONG Zhijun(Key Laboratory of Metallurgical Equipment and Control Technology,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Research and Development Center of WISCO,Wuhan 430080,China)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,湖北武汉430081 [2]武汉科技大学机械传动与制造工程湖北省重点实验室,湖北武汉430081 [3]武汉钢铁有限公司技术中心,湖北武汉430080

出　　处：《炼钢》2019年第6期1-5,共5页Steelmaking

摘　　要：为改进KR脱硫设备和工艺,以期改善KR脱硫过程中出现的柱状回转区和"死区"现象,参考国内某钢厂KR脱硫搅拌工艺过程,应用Fluent软件,采用VOF模型对槽内的搅拌流场进行数值分析,研究不同叶片形状和偏心搅拌下的流场特性。结果表明:与常规三叶搅拌相比,螺旋三叶搅拌流场中,"死区"并未得到改善,且柱状回转区面积增大、流速和湍动能均减小;偏心搅拌基本消除了柱状回转区和"死区"现象,且偏心距离为30 mm时改善效果最好。Referring to the KR desulfurization and agitation process of a steel mill in China,using Fluent software,the VOF model was used to numerically analyze the agitated flow field in the tank,and the flow field characteristics under different blade shapes and eccentric stirring were studied to provide reference for the improvement of KR desulfurization equipment and process in order to improve the columnar revolving zone and "dead zone" phenomenon in the KR desulfurization process.The results show that compared with the conventional three-blade stirring,the "dead zone" is not improved in the spiral three-blade mixing flow field,and the area of the columnar rotating zone is increased,the flow velocity and the turbulent energy are reduced.Eccentric stirring basically eliminates the columnar revolving zone and the "dead zone" phenomenon,and the improvement effect is best when the eccentric distance is 30 mm.

关 键 词：Fluent软件 KR脱硫 数值模拟 偏心搅拌 

分 类 号：TF535.22[冶金工程—钢铁冶金]