Aspects of Thermodynamics of Deoxidation of Molten Steel with Mn and A1

Employing data from different sources, variations in the relationship between dissolved oxygen and dissolved element for deoxiation by Al, Si and Mn have been asse-ssed. Thermodynamic calculations have been performed for simultaneous deoxidation by Al+Si and Mn have been perf-ormed for simultaneous deoxidation by Ai+Si+Mn and equil-ibrium compositions of the metal have been determined for various compositions of the metal have been determined for various compositions of slag consisting of MnO, SiO2 and Al203. Some calculated values have been compared with those reported in literature.