Gas stirrer

Details Gas stirrer Gas stirrer

1977-06-13

1979-02-13

Dost, Gerald A.

Metallurgical apparatus

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

By means introducing treating material

C21C 700

Patent

active

041391845

ABSTRACT:
A vessel, particularly a ladle, and method for mixing molten metal. The vessel is adapted to be used in an upright position and has bottom openings, including at least one first opening for the introduction of gas under pressure to stir the contents, and a second opening for discharging contents. A porous plug prevents metal from flowing through each first opening and a stopper controls discharge of metal through the second opening. The inside bottom surface of the vessel is sloped downwardly toward the first opening or openings and the entrance to the second opening is at a level above all first openings when the vessel is upright. The porous plug or plugs may be recessed with respect to the inside bottom surface. Any material that settles from the molten metal will tend to collect directly above a porous plug and become entrained in the stirred metal upon the introduction of gas.

REFERENCES:
patent: 825359 (1906-07-01), Snyder
patent: 2826494 (1958-03-01), Drummond
patent: 3330645 (1967-07-01), DeMoustier et al.
patent: 3501290 (1970-03-01), Finkl et al.
patent: 3618917 (1971-11-01), Fredrikson et al.
patent: 3721432 (1973-03-01), Buhrer et al.
patent: 3737153 (1973-06-01), Steffora et al.
patent: 3971547 (1976-07-01), Fredrikson et al.
patent: 4004793 (1977-01-01), Gray

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