Thermodynamics of Reducing Dephosphorization of Manganese and Manganese Ferroalloys

Abstract

Thermodynamic conditions of dephosphorization of manganese and its ferroalloys with calcium containing fluxes have been analyzed with the help of experimental data on the thermodynamic properties of Mn-P and Ca-P alloys obtained earlier. Equilibrium coefficients of phosphorus distribution between liquid manganese and slag have been calculated. An influence of oxygen and nitrogen partial pressures in the reaction zone on dephosphorization has been established.