| 摘要 |
<p>PURPOSE:To prevent flying of slopping splash during an oxygen blowing work, and lowering of a yield from occurring, and improve workability, working efficiency, and productivity. CONSTITUTION:A water-cooled lance for an electric furnace is a water-cooled non-consumption type lancet 1 to blow oxygen in an electric furnace for making a steel. A water-cooled structure oxygen blowing header 14 having an oxygen blowing nozzle 17 for forming a sub-oxygen-flow barrier FB with which the periphery of the main oxygen ejection flow FO is covered is arranged to the tip part of the lancet 1.</p> |
