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日本住友金属公司和歌山厂为了进一步提高该厂160吨顶底(STB)复吹转炉的二次燃烧率,研制成一种流量及副孔喷射角度大的二次燃烧氧枪,从而使炉内二次燃烧率提高到70％。这种新型的二次燃烧氧枪为单管式,枪端置有3个主孔与6个副孔,孔径均为31
Japan’s Sumitomo Metal Wakayama plant in order to further improve the factory 160 tons top and bottom (STB) complex blowing converter secondary combustion rate, developed a flow and secondary orifice injection angle of the secondary combustion lance, so that the furnace secondary Burning rate increased to 70%. This new type of secondary combustion oxygen lance is a single-tube type with three main holes and six auxiliary holes on the gun end, all of which have an aperture of 31