随着炼钢技术的不断发展,小转炉的供氧喷头也经历了由单孔——三孔——螺旋三孔的发展过程,螺旋三孔在小转炉上的应用近年来发展较快。它与其它喷头相比具有化渣快冶炼效果好,吹炼时间缩短,炉衬寿命提高等优点。我厂在1979年4月全面使用三孔喷头后,于1984年4月在6吨转炉上全面推广应用了螺旋三孔喷头,取得了较好的效果。(?) With the continuous development of steel-making technology, the oxygen feed nozzle of small converter has undergone the development from single hole to three holes to three holes. The application of the three holes in the small converter has been developing rapidly in recent years. Compared with other spray heads, it has the advantages of quick slag refining, shortening blowing time and higher lining life. I plant in April 1979 full use of three-hole nozzle, in April 1984 in 6 tons of converters to promote the full application of the spiral three-hole nozzle, and achieved good results. (?)