Manganese Equilibrium between Molten Iron and MgO-saturated CaO-Fe_tO-SiO₂-MnO-Slags

Abstract

Manganese distribution between liquid iron and MgO-saturated CaO-Fe_tO-SiO₂-MnO slags containing P₂O₅ or S has been obtained in the temperature range 1550 to 1650°C by use of magnesia crucibles. The manganese distribution ratio was found to increase with increase in SiO₂ content and decrease in temperature. The good relationship between activity coefficient of MnO or equilibrium quotient k_Mn(=(%MnO)/{[%Mn]•(%Fe_tO)}) and the slag basicity B (=[(%CaO)+0.3 (%MgO)]/[(%SiO₂)+(%P₂O₅)]) value was observed.