Industrial Experiment of Steelmaking in a Top-Bottom-Side Blown Converter with Slag Splashing Process

A side purging tuyere was applied in the bath side wall in a top and bottom blown converter to form a top-bottom-side(TBS) blown converter and side gas was injected into the converter through the side tuyere during steelmaking process with slag splashing. The metallurgical results from the TBS converter were compared with those from another top and bottom blown converter in the same workshop in the industrial experiment. It is found from the results that consumption of ferrous charges can be reduced and lime consumption of a ton of molten steel can be decreased by about 3 kg in the TBS blown converter. It can enhance dephosphorization capability and lower oxidization of slag and liquid steel. The average [%C] x [%O] at tapping is 0.0025 in the TBS converter, which increases yielding rates of alloy elements.