| 摘要 |
A nozzle (1) is described for delivering a flow of liquid metal from a metallurgical vessel. In combination with inert gas, the nozzle can shield t he flow of liquid metal from oxygen and, additionally, can be used to purge liquid metal residing in the metallurgical vessel. The nozzle includes a substantially gas-impermeable liner (9) surrounded by a permeable compositio n (10). The gas-impermeable liner may comprise a resin-bonded material, and th e permeable liner is preferably a carbon-bonded or castable refractory. A meta l housing (14) may surround the nozzle.
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