Apparatus and method for tapping a molten metal bath

Details Apparatus and method for tapping a molten metal bath Apparatus and method for tapping a molten metal bath

1997-03-24

1999-08-17

Kastler, Scott

Metallurgical apparatus

Process

Plugging or tapping

266237, 222593, C21B 712

Patent

active

059390166

ABSTRACT:
An apparatus and method relate to tapping a molten metal bath from a reactor. The apparatus includes a tapping pipe having a tapping pipe inlet and tapping pipe outlet for withdrawing a portion of the molten bath from the reactor. The molten bath can flow from the reactor through the tapping pipe inlet through tapping pipe to a tapping pipe exit. The tapping pipe is attached to the reactor at the tapping pipe inlet and the tapping pipe includes a susceptor, formed of a suitable material, such as graphite, which heats upon application of induction current. An induction coil assembly is annularly disposed about the tapping pipe, wherein the induction coil assembly can apply an induction current to heat the tapping pipe to a temperature that is higher than that of a solidified bath metal component within the tapping pipe. The induction current melts the solidified bath metal, whereby the molten metal bath can be tapped from the reactor. A slidable gate valve assembly can be attached at the tapping pipe outlet for further control of tapping.

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