| 摘要 |
A bottom blowing nozzle assembly for use in refining of molten metal by blowing various gases from the bottom of a steel making furnace such as a steel converter containing the molten metal. The bottom blowing nozzle assembly has a plurality of thin metal nozzles embedded in a refractory block in a side-by-side relation at predetermined intervals so as to extend in the longitudinal direction of the refractory block. According to this arrangement, it is possible to remarkably improve the durability of the bottom blowing nozzle of the kind described. |
