NOZZLE ARRANGEMENT FOR INJECTING GASES OR SOLID MATTER INTO A LADLE CONTAINING MOLTEN METAL

摘要

A nozzle arrangement for injecting gases or solid matter into a ladle containing molten metal, e.g. in the region of a slide gate, the nozzle insert of which has the form of a truncated cone provided with a through-flow channel, and which nozzle insert is to be placed in position in a nozzle brick of the ladle walls having a conical opening. The conical outer surface of the nozzle insert and the conical inner surface of the opening of the nozzle brick have a corresponding gradient for a self-locking fit, preferably of 5.degree., and the conical inner surface of the opening of the nozzle brick is lined with a sheet-iron lining of minor material thickness having the same gradient. This nozzle arrangement allows a more rapid fitting and replacement of the nozzle insert while ensuring improved accuracy in the fit of the nozzle insert.