Development of Swirl Burner Series for Steel Making Processes

At Sumitomo Metals, we have developed several high efficiency burners using various fuels. The six main types are, 1) a SNT burner which produces a strong swirl flame, 2) a SSF burner which produces a bright stable flame when using pulverized coal, 3) a SSC burner producing a variable length flame with extremely low NOx emission, 4) a SCF burner producing a variable length curtain flame, 5) a SLG burner which produces a stable flame when using lean gases, and 6) a SNM burner which produces a reducing and direct heating flame in continuous he at treatment furnaces. The purpose of this paper is to present details on the structure and combustion characteristics of these burners and to outline their use in our factory.