| 摘要 |
<p>A lance for an electric furnace is provided to prevent separation of the combined lance from excessive movement and an external impact by fixing a protrusion part on a concave groove adamantly. A lance(1) for an electric furnace includes the following: a pipe(110) and a plurality of steel wires(120) located in inside; an exterior cover(10) spraying oxygen to a metal and slag in a tap hole by blowing the oxygen through space between a plurality of the steel wires and the pipe; an exterior surface of a taper having a protrusion part(22) and placed on a front part of the exterior cover; an inner surface(30) of the taper having a concave groove(33) formed on inside.</p> |
