抄録
Equilibrium phosphorus distribution between slag and liquid iron has been studied at a temperature range from 1300 to 1680°C. The slag systems studied were of FetO-P2O5-MxOy(MxOy = CaO, MgO, SiO2) saturated with MxOy crucible, and of FetO-P2O5-CaO-MxOy(MxOy=MgO, SiO2) saturated with MxOycrucible to clarify the effect of the added oxides on the phosphorus equilibrium and the approximate validity of the regular solution model for the phosphate slags.
Among the results obtained, this paper shows the results concerning the solubility of the crucible materials to the phosphate slags studied and ferric-ferrous ratio in equilibrium. It was confirmed that the mole fraction of ferric oxide in the phosphate slags could be estimated by an assumption of the regular solution model within an error of ± 0.015.
