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The dephosphorization in large converter was studied by sampling and measuring temperature with sublance during blowing. The phosphorus content of liquid steel at blowing end can reach expected value by properly controlling TFe content and basicity of the slag. The equilibrium between slag and liquid steel at blowing end was calculated and the regression equation of the relationship between phosphorus content and process parameters related to dephosphorization reaction was found out.
The dephosphorization in large converter was studied by sampling and measuring temperature with sublance during blowing. The phosphorus content of liquid steel at blowing end can reach expected value by proper controlling TFe content and basicity of the slag. The equilibrium between slag and liquid steel at blowing end was calculated and the regression equation of the relationship between phosphorus content and process parameters related to dephosphorization reaction was found out.