Metallurgical apparatus – Process – Plugging or tapping
Patent
1980-02-22
1981-08-11
Andrews, M. J.
Metallurgical apparatus
Process
Plugging or tapping
222146C, 264 30, 266273, F27D 116
Patent
active
042830427
ABSTRACT:
This invention discloses a method which can efficiently repair the tap hole of a converter even under high temperature. The method employs an injection pipe of a unique construction for applying refractory material onto the inner surface of the tap hole. Such injection pipe is of a circular cylindrical construction and is provided with a pipe cooling means and, preferably, with a perforated mold sleeve which encases the injection pipe. Due to such construction, the refractory material charged into the injection pipe can be smoothly and uniformly injected through an injection opening formed at the front portion of the injection pipe and apertures of the perforated mold sleeve onto the inner surface of the tap hole, whereby thus applied refractory material can show the improved adhesion rate and properties while defining a predetermined optimal diameter to the tap hole after the repairing operation.
Andrews M. J.
Kurosaki Refractories Co. Ltd.
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