Fe_tO-(CaO+MgO)-(SiO_2+P_2O_5) 系りん酸塩スラグと溶鉄間の硫黄分配平衡

概要

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Equilibrium sulphur distribution between slag and liquid iron has been studied at the temperature range from 1573 to 1953K. The slag systems studied were of Fe_tO-P_2O_5-M_xO_y (M_xO_y=CaO, MgO, SiO_2) ternary and of Fe_tO-P_2O_5-CaO-M_xO_y (M_xO_y=MgO, SiO_2) quaternary. The data were obtained in our previous works concerning the effect of additives on the phosphorus equilibrium and the approximate validity of the regular solution model for the phosphate slag. The distibution ratios, (%S)/α_S, and the sulphide capacities, C_S, of those slags were determined as the function of the slag composition. The results obtained were summarized as follows : logC_S=-4.210+3.645(BI) (BI)=N_<CaO>+N_<FeO>+0.5N_<MgO>-0.5N_<P_2O_5> log{(%S)/α_S}=logC_S-logα_<Fe_tO>+5685/T-1.430 It was confirmed that these equations were applicable to all the experimental results, not only on the phosphate slags, which was obtained in the present work and were reported by the others, but also on the silicate slags by the other investigators.
社団法人日本鉄鋼協会の論文
1990-02-01