Dephosphorisation of Iron–Chrome Alloy with Ca–CaF₂ Melt during Electro Slag Refining

抄録

Calcium-calcium fluoride melt was used to remove phosphorus from the ferro-chrome alloy (64.5 wt% Cr, 0.15 wt% P) during electro slag refining process. The effect of atmosphere and deoxidisers, viz. Al, Fe–Mo and misch metal were also studied during dephosphorisation reaction. The thermodynamic properties of Ca–CaF₂ melt is calculated from a known phase diagram and these results are discussed in relation with the dephosphorisation reaction.