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在BaO／CaO重量比值为1／1～5／1的范围内，测定了锰铁合金脱磷剂BaO－CaO－（5％～15％）MnO2－（15％～20％）CaF2的熔点，结果表明：当CaF2含量为15％时，随熔剂中BaO／CaO比值增大，相应熔点降低，随MnO2％增大，熔点升高．当CaF2含量为20％时，在BaO／CaO重量比值为2／1～3／1的组成区域内，熔点突然升高．根据实验结果，推荐60％BaO－12％CaO－8％MnO2－20％CaF2为锰铁合金脱磷剂，该熔剂熔点低（～1250℃），BaO／CaO比值高（5／1）．
The melting point of BaFiO3 (5% ~ 15%) MnO2- (15% ~ 20%) CaF2 was measured in the range of BaO / CaO weight ratio from 1/1 to 5/1. The results show that when the content of CaF2 is 15%, the melting point decreases with the increase of BaO / CaO ratio in the flux. As the content of MnO2 increases, the melting point increases. When the content of CaF2 is 20%, the melting point abruptly rises in the compositional area with BaO / CaO weight ratio of 2/1 ~ 3/1. According to the experimental results, 60% BaO-12% CaO-8% MnO2-20% CaF2 is recommended as a ferromanganese dephosphorization agent with a low melting point (~ 1250 ° C) and a high BaO / CaO ratio (5/1).