挡板改善KR法脱硫搅拌效果的数值分析  

Improving the stirring effect of KR desulfurization by baffles:a numerical analysis

作　　者：闵昌飞 但斌斌[1,2] 牛清勇 欧阳德刚 龚昌运 Min Changfei;Dan Binbin;Niu Qingyong;Ouyang Degang;Gong Changyun(Key Laboratory of Metallurgical Equipment and Control of Ministry of Education, 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;Wuhan Branch of Baosteel Central Research Institute(R&D Center of Wuhan Iron & Steel Co.,Ltd.), 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]宝钢股份中央研究院武汉分院(武钢有限技术中心),湖北武汉430080

出　　处：《武汉科技大学学报》2020年第5期340-345,共6页Journal of Wuhan University of Science and Technology

基　　金：国家自然基金资助项目(51475340);湖北省高价值专利培育、转化和产业化项目(201801060A).

摘　　要：为了改善KR法脱硫搅拌效果,本文在铁水罐内添加控流装置,并应用Fluent软件,采用VOF模型对罐内的搅拌流场进行了数值分析,研究了挡板的布置方式、数量与宽度对流场特性的影响。结果表明,铁水罐内设置挡板能够抑制中心漩涡的形成,扩大脱硫剂颗粒在罐内的分散区域;布置4块高度为铁水罐高度1/2、宽度为铁水罐直径1/10的短挡板时,罐内的强制涡流区基本消除,铁水罐底部仍保持较快的流场速度,搅拌效果最佳。In order to improve the stirring effect of KR desulfurization,flow-control devices were added to the molten iron tank,and the VOF model was used to numerically analyze the agitated flow field in the tank via Fluent software.The effects of arrangement,quantity and width of the baffles on the flow field characteristics were investigated.The results show that the added baffles in the molten iron tank can inhibit the formation of the central vortex and expand the dispersion of desulfurizer particles in the tank.The forced vortex area in the tank is basically eliminated by four short baffles with the height of 1/2 of the hot metal tank and the width of 1/10 of the hot metal tank diameter,and the bottom of the molten iron tank still maintains rapid flow field velocity to ensure the optimum stirring effect.

关 键 词：铁水脱硫 搅拌流场 流场特性 挡板 搅拌效果 数值分析 

分 类 号：TF535.2[冶金工程—钢铁冶金]