Treatment of molten metal

Details Treatment of molten metal Treatment of molten metal

1985-12-23

1987-01-13

Rosenberg, Peter D.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

75 49, 75 58, C21C 702

Patent

active

046362495

ABSTRACT:
The invention is directed to a method of and apparatus for, introducing into a bath of molten metal (e.g. ferrous metal) contained in a vessel an alloying component (e.g. lead) or a reagent. The method includes the steps of connecting a plurality of plugs or nozzles located in the bottom and/or sides of the vessel to supplies of gas (e.g. argon) under pressure, and causing gas to be introduced simultaneously through the plugs or nozzles to produce individual gas flows which pass upwardly through the metal bath to create areas of turbulence on the bath surface. The areas of turbulence interact to produce on the bath surface a relatively quiescent region and it is into this relatively quiescent region that the required quantity of alloying component or reagent is added.

REFERENCES:
patent: 3201226 (1965-08-01), Spolders
patent: 3484232 (1969-12-01), Karinthi
patent: 3547622 (1970-12-01), Hutchinson
patent: 3841867 (1974-10-01), Davies et al.
patent: 3869283 (1975-03-01), Davies et al.

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