Metallurgical apparatus – Means for introducing fluent into vessel – e.g. – tuyere – With flow control means or internal flow guide
Patent
1988-01-11
1988-11-08
Rutledge, L. Dewayne
Metallurgical apparatus
Means for introducing fluent into vessel, e.g., tuyere
With flow control means or internal flow guide
266218, C21C 548
Patent
active
047830590
ABSTRACT:
A tuyere for treating molten metal in a vessel in which bottom stirring gas blowing is desired has a tubular body member having a mounting flange inwardly of one end thereof by which the tuyere is positioned in the vessel through an opening in a side wall thereof with the inner end of the tuyere spaced with respect to the side wall to effectively direct gas introduced therethrough in a stirring action in the molten metal. A plurality of spirally wound metal tubes are positioned in side by side relation engaging the tubular body member and the plurality of spirally wound metal tubes are partially flattened to create desirable configurations so that a tuyere so formed can match any desired discharge of gas into the molten metal. Additionally, the partially flattened configuration of the smaller tubes enables them to provide relatively large surface areas engageable against the inner surface of the tubular body member which imparts a cooling effect thereto. The spirally wound tubes are mechanically locked into a refractory forming a core in the tubular body member and the delivery end of the tuyere positions the ends of the spirally wound tube in a circular pattern which provides a tangential flow of gas therefrom when gas is directed therethrough. The spirally wound tubes extend continuously inwardly of the delivery end of the tuyere to a point inwardly of the opposite end thereof where they continue longitudinally and communicate with apertures in a partition defining one wall of a gas receiving chamber.
REFERENCES:
patent: 3082997 (1963-03-01), Kurzinski
patent: 3645520 (1972-02-01), Acre et al.
patent: 3898078 (1975-08-01), Huber
patent: 3967955 (1976-07-01), Folgero et al.
patent: 4211553 (1980-07-01), Honkaniemi et al.
patent: 4427186 (1984-01-01), Buhrmann
Insul Company, Inc.
McDowell Robert L.
Rutledge L. Dewayne
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