LEAD RETAINING PURGE PLUG

摘要

A 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 the ladle. The purge plug houses a retention chamber for holding the lead content of lead-containing molten steel alloys that leaches into, or infiltrates into, the purge plug. The purging gas supply tube is provided with a portion that protrudes into the retention chamber, thereby preventing the lead content of lead-containing molten steel alloys from entering and blocking the purging gas supply tube.

主权项

1. A purge plug, comprising:
a refractory body having a feed end, a delivery end, an exterior and a longitudinal axis, at least one gas delivery structure disposed in fluid communication with the feed end and the delivery end, a retention chamber in fluid communication with the gas delivery structure and located at the feed end of the refractory body, and a gas supply tube in fluid communication with the retention chamber and having a gas supply tube protrusion protruding into the retention chamber.