| 摘要 |
<p>When charging a metallurgical vessel, such as a converter (1), the rising smoke or fume is collected in a hood (8, 9) to which an outlet line (10) is connected, and aspirated away. To avoid any uncontrolled egress of smoke or gas through spaces (13) or gaps between the hood and other parts of the equipment, free edges (12, 19) of the hood are sealed off from the ambient space by a gas curtain, for example a curtain of compressed air, nitrogen or steam. <IMAGE></p> |
