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公开(公告)号：EP0796417A1
公开(公告)日：1997-09-24
申请号：EP95905832.0
申请日：1994-12-28
发明人： BERGMAN, Dan , INOMOTO, Takeo
CPC分类号： C21C5/48 , C21C5/4606 , F27D3/16 , F27D2003/164
摘要： An annular nozzle for an oxygen lance, e.g. an oxygen lance for blowing steel in a converter, gives an annular hot spot on the liquid steel in the converter. When exiting the nozzle, the annular jet has disruptions that result in ambient atmosphere being sucked in towards the centre of the annular jet. Thus, a sub-pressure is prevented which would otherwise prevent the jet from diverging conically. In one embodiment, the nozzle can be switched during a blowing operation between forming a tight jet and forming a diverging jet.
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