Tapping pipe and system for a converter or electric arc furnace

Details Tapping pipe and system for a converter or electric arc furnace Tapping pipe and system for a converter or electric arc furnace

1993-03-17

1994-05-10

Kastler, Scott

Metallurgical apparatus

Process

Plugging or tapping

266236, 222590, 222594, B22D 4150

Patent

active

053101642

ABSTRACT:
A tapping pipe is provided for a melt vessel having a predetermined melt maximum bath level X.sub.m. The tapping pipe defines a flow passage therethrough which has a discharge zone having flow cross-sections approximately the same as the cross-sections of the flow profile of a free flowing stream of the melt from a melt bath level X.sub.0 between 30% and 70% of the maximum melt bath level X.sub.m. The discharge zone can be provided by a brick defining the discharge zone, together with additional bricks defining a feed zone and a transition zone between the feed zone and the discharge zone. In making a number of replacements of the tapping pipe in a converter, the length of the brick defining the transition zone can be gradually reduced so as to compensate for the wear of the converter lining.

REFERENCES:
patent: 4427184 (1984-01-01), Steinwider et al.
patent: 4634106 (1987-01-01), LaBate, II
patent: 4756452 (1988-07-01), Tsukomoto et al.
patent: 4984769 (1991-01-01), Bruckner et al.

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