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| Oxygen Pressure Selection in BOF |
| YANG Wen-yuan1, WANG Li-li2, XIAO Zun-hu3, WANG Ming-lin1, LIU Lu-chang4 |
1. Central Iron and Steel Research Institute, Beijing 100081, Chian
2. Anshan Research Institute of Thermo-Energy,Anshan 114000, Liaoning, China
3. Lianyuan Iron and Steel Group Ltd., Loudi 417009, Hunan, China
4. Wuhan Iron and Steel Group Co., Wuhan 430083, Hubei, China |
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Abstract Oxygen pressure of work in BOF is decided by nozzle Mach number. Oxygen jet penetration depth of the bath [(L)] and the bath depth [(L0)] has an appropriate ratio [(L/L0)]. About 1/3 steel plant’s working oxygen pressure is unreasonable in China. According to theoretical analysis and practical experience, working oxygen pressure is usually higher （5%～15%） than stagnant pressure according to Mach. Therefore, shockwave losses of flow jet can be reduced, penetration depth of jet is deeper and nozzle rapid melting caused by negative pressure at nozzle outlet can be prevented. Pressure losses [(Δp)] caused by oxygen passing through pipeline should be understand during nozzle designing. Field measurement method is comparatively reliable to get the pressure loss.
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Received: 02 November 2013
Published: 02 November 2014
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2014, Vol. 49 
