Cold Model Study on Mg Desulfurization of Hot Metal Under Mechanical Stirring  

作　　者：LIU Yan ZHANG Zi-mu LIU Jian-nan ZHANG Jun-hua Masamichi Sano ZHANG Jun 

机构地区：[1]Key Laboratory of Ecological Utilization of Multi-metal Intergrown Ores of Ministry of Education,School of Materials and Metallurgy,Northeastern University [2]Beijing Institute of Technology [3]Dalian University of Technology [4]Nagoya University

出　　处：《Journal of Iron and Steel Research International》2013年第12期1-6,共6页

基　　金：Item Sponsored by National Natural Science Foundation of China(50974035,51074047);High Technology Research and Development Program of China(2010AA03A405,2012AA062303);Innovation Team Project of Provincial Science and Technology of Liaoning Province of China(LT2010034)

摘　　要：The new method of in-situ desulfurization with mechanical stirring of new type impellers was introduced, in which the bubble＇s dispersion and disintegration of magnesium vapor were the key to boosting the desulfurization efficiency and increasing the utilization rate of magnesium. Effects of different new type of impellers on bubble dis persion and disintegration were studied through bubble image analysis, gas-liquid mass transfer, and power con- sumption levels of different impeller structures. The results showed that the sloped swept-back blade impeller-2 pro- duces optimal bubble＇s dispersion and disintegration, as well as higher volumetric mass transfer coefficient and CO2 gas utilization while consuming the least power. Numerical simulation result with Fluent software also showed that the sloped swept-back blade impeller-2 has higher turbulent kinetic energy and better velocity distribution than the other two impellers.The new method of in-situ desulfurization with mechanical stirring of new type impellers was introduced, in which the bubble＇s dispersion and disintegration of magnesium vapor were the key to boosting the desulfurization efficiency and increasing the utilization rate of magnesium. Effects of different new type of impellers on bubble dis persion and disintegration were studied through bubble image analysis, gas-liquid mass transfer, and power con- sumption levels of different impeller structures. The results showed that the sloped swept-back blade impeller-2 pro- duces optimal bubble＇s dispersion and disintegration, as well as higher volumetric mass transfer coefficient and CO2 gas utilization while consuming the least power. Numerical simulation result with Fluent software also showed that the sloped swept-back blade impeller-2 has higher turbulent kinetic energy and better velocity distribution than the other two impellers.

关 键 词：gas injection refining eccentric mechanical stirring bubble disintegration bubble dispersion volumetric mass transfer coefficient Mg desulfurization hot metal 

分 类 号：TF704.3[冶金工程—钢铁冶金]