一、前言炉底供气构件是转炉顶底复合吹炼的主要技术关键。它既要满足复吹工艺的特殊要求,又要结构简单,使用安全可靠,与炉衬相当的使用寿命。目前,世界各国复吹转炉的底吹供气方式甚多,大体可分为金属喷嘴 First, the foreword Furnace gas supply components are the main technical key blowing converter top and bottom compounding. It not only meets the special requirements of blow-blowing process, but also has the advantages of simple structure, safe and reliable operation, and equivalent service life to the lining. At present, there are many ways to blow gas at the bottom of the BOF in the world, which can be roughly divided into metal nozzles