Method and apparatus for treating liquid metal in a vessel

Details Method and apparatus for treating liquid metal in a vessel Method and apparatus for treating liquid metal in a vessel

1983-08-29

1985-11-26

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 93R, 266 44, C21B 1300

Patent

active

045552665

ABSTRACT:
A method and apparatus for treating molten metal in a bottom pour vessel through a pouring opening controlled by a slidable gate closure member. A dual concentric tuyere having a central conduit and an outer annular conduit is positioned in the pouring opening of the vessel. Treating material is injected into the molten metal through the central conduit of the tuyere and a coolant is passed through the outer annular conduit of the tuyere. After completion of the treatment, oxygen is blown through both the central conduit and the annular conduit to burn back the tuyere, opening the nozzle well for pouring.

REFERENCES:
patent: 4294431 (1981-10-01), Steen
patent: 4390166 (1983-06-01), Danjo
patent: 4480820 (1984-11-01), Zhukov

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