CaO-SiO_2-Al_2O_3-MgO系スラグ : 溶鉄間の硫黄分配比とMgOの溶解度

概要

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The sulfur distribution ratios between CaO-SiO_2-Al_2O_3-MgO slags and liquid iron were measured at 1873 K as a function of Si content in CaO, MgO, and Al_2O_3 crucibles. Based on the sulfur distribution ratio, sulfide capacity, C_S (=(mass% S)・(P_<O_2>^<1/2>)/(P_<S_2>^<1/2>), was determined by using the oxygen partial pressure, P_<O_2>, estimated from (<Si>___-)/(SiO_2) equilibrium. The present C_S values, together with the previously reported values of C_S, were expressed as a function of slag composition on mole fraction base in the following formula : log C_S=X_<CaO>-4.9X_<SiO_2>-5.3X_<Al_2O_3>+0.4X_<MgO>-1.37. The solubilities of MgO at slag compositions saturated with 2CaO・SiO_2,MgO, and MgO・Al_2O_3 phases and the iso-solubility lines of MgO were drawn in (CaO+MgO)-SiO_2-Al_2O_3 quasiternary diagram.desulfurizationladle slagsulfur distribution ratiosulfide capacitysolubility of MgOCaO-SiO_2-Al_2O_3-MgO system
東北大学の論文
1997-03-28