Apparatus for determining the presence of a metallic melt in a p

Details Apparatus for determining the presence of a metallic melt in a p Apparatus for determining the presence of a metallic melt in a p

1984-08-14

1986-07-29

Rutledge, L. Dewayne

Metallurgical apparatus

With recording, indicating, inspection or measuring means

266236, C21B 724

Patent

active

046027688

ABSTRACT:
Into an opening (11) in the bottom part or wall part (2) of a smelting furnace (1) or of a casting ladle, a hollow cylindrical carrier element (7) is inserted which, for example, is releasably connected by means of screws with this bottom or wall part (2). This carrier element (7) surrounds an outlet casing (6) made of refractory material in which a channel of passage (5) for the melt is provided. At places facing each other with regard to the channel of passage (5), recesses (13, 14) are formed in the carrier element (7) in the manner of annular grooves. In each of these recesses (13, 14), there is a coil (17, 19) which is protected from a direct contact with the outlet casing (6) by sections of wall (15, 16) forming the bottom of the recesses (13, 14). One of the coils (17) may be connected with an AC current source for the production of a magnetic field, while the second, opposite coil (19) is connected to an evaluation circuit in which the signals induced in this second coil (19) are evaluated. As a result of the attachment of the coils (17, 19) in a carrier element (7) separated from the wall or bottom part (2), the installation and dismantling of the coils (17, 19) has been simplified. Moreover, the danger of damage to the coils (17, 19) does not exist in the case of a renewal of the outlet casing (6).

REFERENCES:
patent: 4140300 (1979-02-01), Gruner et al.
Studsvik Report, "The Emli Slag Indication System", 1982-03-09.

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