Nozzle and method of blowing hot metal

Details Nozzle and method of blowing hot metal Nozzle and method of blowing hot metal

1996-06-28

1998-05-05

Kastler, Scott

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

By means introducing treating material

266265, C21C 532

Patent

active

057469709

ABSTRACT:
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 towards the center 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 divergent jet.

REFERENCES:
patent: 3627295 (1971-12-01), Doi et al.
patent: 3725040 (1973-04-01), Jones
patent: 4993691 (1991-02-01), Mousel et al.
patent: 5227118 (1993-07-01), Bleser et al.

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