2019 Pittsburgh AISTech

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Effect of Top and Bottom Blowing Condition on Spitting Phenomenon in the Converter (Room 409)

The spitting phenomenon in a converter is important, since it causes iron yield deterioration and operational trouble. In this study, the spitting phenomenon in a top- and bottom-blowing converter was studied in 1/10-scale water model experiments with various bottom tuyere configurations. Although input energy was constant, the spitting rate varied drastically with different top and bottom blowing configurations. The interference index, which is based on the relative position between the top-blowing cavity and plume zone, has a positive correlation with spitting energy. When energy consumption for spitting generation decreased, energy consumption for stirring and bath vibration decreased.