Purge plug

摘要

A refractory device, such as a replacement purge plug containing a refractory material, is configured to be inserted in the bottom of a ladle for introducing purging gas through a heat of molten metal in a ladle. One or more geometrical features on the lateral surface of the purge plug facilitate the installation of the purge plug into a housing block that has been subjected to erosion.

主权项

1. A device comprising a refractory, comprising a supply end, a working end, and a lateral surface joining the supply end and the working end, wherein the lateral surface comprises an anchoring geometric feature protruding from or indented into the lateral surface, wherein the device is tapered from the supply end to the working end, wherein the device comprises a purge plug, and wherein the geometric feature comprises a feature selected from the group consisting of:
(a) at least one spring-mounted anchor; (b) a locking peg, a locking ring configured to encircle the lateral surface of the purge plug and to engage with the locking peg, and wherein the locking ring further comprises a mesh extending laterally from the locking ring; and (c) a mesh encircling a portion of the lateral surface of the working end of the purge plug, and further comprising a plurality of attachments between the mesh and the lateral surface of the purge plug, wherein the attachments are arranged radially around the lateral surface of the purge plug.