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The relation of Lp(the ratio P content in slag to P content in ferromanganese) and L_(mn),(the ratio Mn content in slag to Mn content in ferromanganese) with C content[C]in ferromanganese were tested by means of the equilibrium experiments of P and Mn between ferromanganese and BaO-BaF_2-MnO slag system.The results show that there exists in ferromanganese an optimum C content[C]* corresponding to maximum L_P and minimum L_(Mn)> which is closely related to oxygen potential in the system and the activity of P in the alloy.The control limits of oxygen potential in dephosphorization of ferromanganese are then analyzed.The theoretical limits and measures to improve ferromanganese dephosphorization with BaO-based slag are studied comprehensively based on previous research.
The relation of Lp (the ratio P content in slag to P content in ferromanganese) and L_ (mn), (the ratio Mn content in slag to Mn content in ferromanganese) with C content [C] in ferromanganese were tested by means of the equilibrium experiments of P and Mn between ferromanganese and BaO-BaF_2-MnO slag system. The results show that there exists in ferromanganese an optimum C content [C] * corresponding to maximum L_P and minimum L_ (Mn)> which is closely related to oxygen potential in the system and the activity of P in the alloy. Control limits of oxygen potential in dephosphorization of ferromanganese are then analyzed. Tumor limits and measures to improve ferromanganese dephosphorization with BaO-based slag are studied comprehensively based on previous research.