Metallurgical apparatus – Means for introducing fluent into vessel – e.g. – tuyere – With flow control means or internal flow guide
Patent
1987-02-20
1988-03-15
Rutledge, L. Dewayne
Metallurgical apparatus
Means for introducing fluent into vessel, e.g., tuyere
With flow control means or internal flow guide
266225, C21C 532
Patent
active
047308133
ABSTRACT:
A nozzle for refining metals or ferroalloys by oxygen blasting from above the melt is presented. The nozzle terminates at a nozzle head and includes at least one central blast pipe for directing a jet of oxygen having supersonic speed. A chamber is interposed between the mouth of the blast pipe and the mouth of the nozzle head. This chamber widens progressively from the mouth of the blast pipe, and narrows toward the mouth of the nozzle head. At least one opening from at least one lateral duct opens to the chamber in the vicinity of the blast pipe mouth. Each lateral duct is connected to a source of gas, and includes an inidividual flow control valve. Preferably, at least three lateral ducts are arranged symmetrically around the blast pipe mouth.
REFERENCES:
patent: 1873996 (1932-08-01), Cunningham
patent: 3207597 (1965-09-01), Hashimoto et al.
patent: 4349382 (1982-09-01), Schleimer et al.
patent: 4366953 (1983-01-01), Colling et al.
patent: 4533124 (1985-08-01), Mercatoris
Bock Andre
Heintz Carlo
Henrion Romain
Klein Henri
Liesch Jean
Arbed S.A.
McDowell Robert L.
Rutledge L. Dewayne
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