| 摘要 |
<p>995,858. Converters. YAWATA IRON & STEEL CO. Ltd., and YOKOYAMA ENGINEERING CO. Ltd. Feb. 5, 1962 [Feb. 10, 1961], No. 4298/65. Divided out of 995,857. Heading F4B. An oxygen top blowing converter 2 has a hood 1, e.g. forming a cooler for waste gases, spaced by a gap 3 from the converter mouth with an annular ring 4, to which inert gas such as by-product nitrogen is supplied, surrounding the hood bottom to direct the inert gas downwardly to form a gas curtain 5 sealing the gap against ingress of air and escape of waste gases. The hood may include a vertically movable skirt 6 having a water seal 7 between it and the rest of the hood for adjusting the height of the gap.</p> |
