CLOSURE APPARATUS FOR A TAP HOLE

摘要

Provided for the tap hole (4) in the bottom (3) of a metallurgical vessel (1) is a closure apparatus comprising a shut-off member (6) which can close off the tap hole (4) from below, and a pipe (11) which is displaceable from above through the molten bath into a lowered blocking position in which it bears against the upper edge of the tap hole (4). An axially displaceable lance (19) may be disposed in the pipe (11) so that the pipe can be used for burning open the tap hole (4), by means of oxygen. Filling material (7) which is capable of flow can also be introduced into the tap hole (4), through the pipe (11). The closure apparatus makes it possible to carry out a sump mode of operation, without tilting the vessel (1).