| 摘要 |
<p>A snorkel or flow tube apparatus for a metallurgical recirculatory vacuum degassing system comprising at least one up-leg tube (6) and at least one down-leg tube (5) in which the up-leg (6) and the down-leg (5) are arranged generally coaxially in a single snorkel apparatus, wherein the up-leg tube (6) is the annular outer leg.</p> |
