Abstract
This paper focuses on the CaO-SiO2-FeO-MgO-MnO-P2O5 slag system that represents the major components of dephosphorization slag in BOF. Phosphorus distribution between 2CaO·SiO2-3CaO·P2O5 Solid Solution and Liquid Slag were analyzed by FactSage. The effects of slag content, basicity on the distribution ratio of P between the solid solution phase and the liquid phase (L P) and the percentage content of P in solid solution phase and liquid phase have been discussed. The results show that, with the increase of basicity, L P (wt%) decreases until the basicity reaches 1.9, then it turns to increase. L P (wt%) increases gradually with the increasing amount of FeO or P2O5.
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