Multi-tube blowing lance

Details Multi-tube blowing lance Multi-tube blowing lance

1990-10-05

1992-02-18

Andrews, Melvyn J.

Metallurgical apparatus

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

By means introducing treating material

75553, 75558, C21C 532

Patent

active

050886967

ABSTRACT:
A lance intended for injecting oxygen and/or an inert gas into liquid steel comprises a metal supply tube which opens into a distributor from which issue a plurality of injection tubes arranged parallel and concentrically with respect to the longitudinal axis of the lance, these injection tubes being embedded in a sheath of refractory material. Preferably, the distributor comprises two chambers which are separate from each other, the first chamber communicating with the supply tube for a first gas and with a plurality of first injection tubes, and the second chamber communicating with a second supply pipe for another gas and with a plurality of second injection tubes.

REFERENCES:
patent: 4852860 (1989-08-01), Griffing et al.

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