Heating molten metal

Details Heating molten metal Heating molten metal

1996-09-20

1998-01-20

Kastler, Scott

Metallurgical apparatus

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

By means introducing treating material

266200, 75 1014, C21C 700

Patent

active

057098352

ABSTRACT:
Apparatus for applying heat to a reservoir (27) of molten metal, comprising a plasma torch (48) and a metal contact electrode (52) to complete an electrical circuit with the torch (48) via the molten metal in the reservoir (27). The plasma torch (48) and the metal contact electrode (52) are both mounted on a stand (51) for up and down movements as a unit so as that the plasma torch (48) is moveable downwardly into proximity with the surface of the reservoir of molten metal and the metal contact electrode is simultaneously insertable into the molten metal and withdrawable therefrom. The metal contact electrode (52) is formed with an interior passage (63) for flow of gas therethrough into the molten metal and there is provided a gas pressure detector (65) to detect a change in gas pressure consequent on breakage of the metal contact electrode (52).

REFERENCES:
patent: 4152532 (1979-05-01), Eguchi et al.
patent: 4632700 (1986-12-01), Bebber et al.
patent: 4686687 (1987-08-01), Mure et al.
patent: 4734551 (1988-03-01), Cheek

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