|
|
|
| Study and Application of Bottom Blowing Technique of Combined Blowing Converter |
| Li-bin YANG1,Liu LIU1,Xing-li JIAO2,Pu-qiao TONG1 |
1. Central Iron and Steel Research Institute, Beijing 100081, China
2. No��4 Steelmaking and Rolling General Plant, Masteel, Ma��anshan 243000, Anhui, China |
|
|
|
|
Abstract A The water modelling experiments of 300 t converter concerning combined blowing parameters, the number, and configuration of bottom nozzles are carried out. The results show that the arrangement of 16 bottom nozzles at 0��40D and 0��45D (hearth diameter) concentric circles is the reasonable solution. The combined blowing steelmaking technique of 300 t converter has been developed through experiments and studies relating to optimizing the top-bottom combined blowing pattern, the number and configuration of the bottom nozzles, the type selection of bottom nozzle, and bottom nozzle maintenance techniques. The results show that the product of w��C�ݡ�w��O�� at endpoint is reduced from 0��00262 to 0��00243, average TFe content is decreased by 2%, phosphorus distribution is raised from 70��85 to 78��95, sulfur distribution is raised from 3��43 to 4��32 and manganese content is raised by 0��02%.
|
|
Received: 09 October 2012
Published: 16 January 2014
|
|
|
|
| [1] |
Wei WU, Bing NI, Zhuang-zhuang LIU, Yong YANG. Theoretical Study and Thermal Simulation of Titanium Removal in Combined Blown Converters[J]. Chinese Journal of Iron and Steel, 2015, 22(Supplement 1): 57-62. |
| [2] |
Shao-chun CHEN,,Rong ZHU,Jing-she LI,Chun-lai HE,Ming L�K. Three-phase Fluid Numerical Simulation and Water Modeling Experiment of Supersonic Oxygen Jet Impingement on Molten Bath in EAF[J]. Chinese Journal of Iron and Steel, 2014, 21(6): 589-595. |
| [3] |
YUE Qiang. Water Modeling of a Swirling Flow Tundish for Steel Continuous Casting[J]. Chinese Journal of Iron and Steel, 2009, 16(5): 17-17. |
| [4] |
Moumtez Bensouici;Ahmed Bellaouar;Kamel Talbi. Numerical Investigation of the Fluid Flow in Continuous Casting Tundish Using Analysis of RTD Curves[J]. Chinese Journal of Iron and Steel, 2009, 16(2): 22-0. |
| [5] |
LIU Wen��hong;XIE Zhi;JI Zhen��ping;WANG Biao;LAI Zhao��yi;JIA Guang��lin. Dynamic Water Modeling and Application of Billet Continuous Casting[J]. Chinese Journal of Iron and Steel, 2008, 15(2): 14-0. |
| [6] |
Mehdi ALIZADEH;Hossein EDRIS;Ali SHAFYEI. Fluid Flow and Mixing in Non��Isothermal Water Model of Continuous Casting Tundish[J]. Chinese Journal of Iron and Steel, 2008, 15(2): 7-0. |
|
|
|
|
2014, Vol. 21 
