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在１６７３Ｋ下，通过给定化学组成的ＢａＯ－ＢａＦ２－ＭｎＯ熔剂和Ｍｎ（～６０％）－Ｆｅ－Ｃ（１．１８％～６．４０％）－Ｐ合金间的平衡实验，确定锰铁合金中碳含量的变化对磷分配比ＬＰ和锰分配比ＬＭｎ的影响。结果表明，锰铁熔体中存在着一个临界碳含量［％Ｃ］＊，它对应着最大的ＬＰ和最小的ＬＭｎ。热力学计算表明，在本实验条件下，氧位控制环节对临界碳的存在和位置起决定性作用。而对于给定化学组成的ＢａＯ基熔剂，其相应渣系的磷酸盐容量值和锰酸盐容量值变化不大，分别为ｌｇＣＰ＝２４．８０±０．１５，ｌｇＣＭｎ＝９．０４±０．２４，它们对ＬＰ、ＬＭｎ的临界转变现象影响不大。
At 1673 K, equilibrium experiments between BaO-BaF2-MnO fluxes of given chemical composition and Mn (~ 60%) - Fe-C (1.18% ~ 6.40% Effect of carbon content on phosphorus partition ratio (LP) and manganese partition ratio (LMn). The results show that there is a critical carbon content [% C] * in the ferromanganese melt, which corresponds to the maximum LP and the minimum LMn. Thermodynamic calculations show that under the experimental conditions, the control of oxygen level plays a decisive role in the existence and location of the critical carbon. For BaO-based flux with given chemical composition, the values of phosphate capacity and manganate capacity of the corresponding slag systems did not change much, which were respectively lgCP = 24.80 ± 0.15 and lgCMn = 9.04 ± 0. 24, they have little effect on the critical transition of LP and LMn.