Metallurgical apparatus – Process – Plugging or tapping
Patent
1997-01-15
1998-10-13
Kastler, Scott
Metallurgical apparatus
Process
Plugging or tapping
266 46, 266272, 222592, 222597, C21B 712
Patent
active
058208151
ABSTRACT:
A cooled elongated, preferably threaded and, tapered, metallurgical taphole plug and a method for using it are described. The plug is inserted into a taphole to cause a plug of molten material to freeze in the taphole such that molten material flow within the taphole is stopped. In one embodiment, the plug is comprised of an externally threaded, elongated member having a first end and a second end with a taper extending at least partially therebetween. The first, narrower end, which is inserted into the taphole, is cooled by a fluid flowing through an internal passage extending at least partially between the first and second ends. As the first end is cooled, the molten material adjacent the first end freezes around the tip of the first end, effectively plugging the taphole. The device is removed by discontinuing fluid flow and applying a rotational moment about the second end such that the threaded, tapered device backsout of the taphole.
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Kastler Scott
Kennecott Holdings Corporation
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