| 摘要 |
A refractory nozzle comprises upper and lower members (20 and 22) having matching tapered bores. The members fit together so that the bores match, and are secured in the hole (16) in the bottom of a metallurgical vessel by a retaining plate (66) and a bottom plate (86). The bottom plate (86) can be removed to allow the lower member (22) to be replaced without disturbing the upper member.
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