WANG Ming-lin1,L�E Ying-hua2,YANG Wen-yuan1,LI Shu-gui2,XU Xiao-wei3
1. Central Iron and Steel Research Institute, Beijing 100081, China 2. Sinosteel Anshan Research Institute of Thermo-Energy Co Ltd, Anshan 114044, Liaoning, China 3. Ma��anshan Iron andSteel Co, Ma��anshan 243100, Anhui, China
Selection of Oxygen Pressure in BOF Steelmaking
WANG Ming-lin1,L�E Ying-hua2,YANG Wen-yuan1,LI Shu-gui2,XU Xiao-wei3
1. Central Iron and Steel Research Institute, Beijing 100081, China 2. Sinosteel Anshan Research Institute of Thermo-Energy Co Ltd, Anshan 114044, Liaoning, China 3. Ma��anshan Iron andSteel Co, Ma��anshan 243100, Anhui, China
ժҪ Based on the on-site investigation and the principle of compressible flow, the working oxygen pressure should be matched to the Mach-number at the nozzle in designing nozzle and oxygen supply schedule so that the higher penetration depth and the more blending energy can be obtained for reducing energy loss by shock wave in the ultrasonic oxygen jet in the normal BOF steelmaking. For some special BOF blowing technologies, such as steelmaking with high phosphorus hot metal, post combustion oxygen lance, hot metal pretreatment, etc, the difference between working oxygen pressure and designed diffusion pressure which is related to Mach-number is necessary, so that the velocity of the oxygen jet will be decreased because of shock wave for expected metallurgical results.
Abstract��Based on the on-site investigation and the principle of compressible flow, the working oxygen pressure should be matched to the Mach-number at the nozzle in designing nozzle and oxygen supply schedule so that the higher penetration depth and the more blending energy can be obtained for reducing energy loss by shock wave in the ultrasonic oxygen jet in the normal BOF steelmaking. For some special BOF blowing technologies, such as steelmaking with high phosphorus hot metal, post combustion oxygen lance, hot metal pretreatment, etc, the difference between working oxygen pressure and designed diffusion pressure which is related to Mach-number is necessary, so that the velocity of the oxygen jet will be decreased because of shock wave for expected metallurgical results.
WANG Ming-lin,L�E Ying-hua,YANG Wen-yuan,LI Shu-gui,XU Xiao-wei. Selection of Oxygen Pressure in BOF Steelmaking[J]. �й������ڿ���, 2011, 18(11): 12-16.
WANG Ming-lin,L�E Ying-hua,YANG Wen-yuan,LI Shu-gui,XU Xiao-wei. Selection of Oxygen Pressure in BOF Steelmaking. Chinese Journal of Iron and Steel, 2011, 18(11): 12-16.
2011, Vol. 18 
