Tap-hole closing arrangement

Details Tap-hole closing arrangement Tap-hole closing arrangement

1979-09-12

1980-11-11

Rosenberg, P. D.

Metallurgical apparatus

Means sealing or opening aperture in vessel

By means plugging aperture

C21C 548

Patent

active

042328551

ABSTRACT:
A tap-hole closing arrangement comprises a closure body which is insertable into the tap hole on leaving free an annular gap relative to the tap hole wall and includes a compressed-gas conduit and an outer jacket that tapers towards the mouth of the compressed-gas conduit. For applying this arrangement to big converters and improving its slag-retention effect, the outer jacket is formed by a spherical-calotte-shaped face passing over into a frustroconical face, the height of the truncated cone being at least 1 time and at most 2.5 times the diameter of the mouth-side outlet opening of the compressed-gas conduit, and the aperture angle of the truncated cone amounting to at least 15.degree. and at most 70.degree..

REFERENCES:
patent: 3973761 (1976-08-01), Pelletier
patent: 4007035 (1977-02-01), Smith
patent: 4079918 (1978-03-01), Truppe

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