Conversion of calcium phosphide to calcium phosphate in reducing dephosphorization slags by oxygen injection

Abstract

We tried to confirm the conversion of Cato calcium phosphate by oxygen injection into the molten Reducing Dephosphorization (RDP) slag as well as to find the stoichiometry of calcium phosphate compound by the treatment. It was experimentally confirmed that the Cawas converted to beta-3CaO·Pand 4CaO·Pphases by oxygen injection treatment of the molten RDP slag by XRD analysis and thermodynamic estimation. © 2013 ISIJ.