Viscosity Measurements of CrO-bearing CaO-SiO2-5%Al2O3-CrO Slag Equilibrating with Metallic Cr

This paper presents a fundamental investigation of the effects of CrO on the viscosity and degree of polymerization (DOP) of CaO-SiO2-5%Al2O3-CrO (R = 0.5 and 0.8) slags for the purpose of efficiently recycling the valuable elements from the steelmaking slags. The results show that both Cr2O3 and CrO have a basic characteristic when R=0.5 and 0.8. The slag viscosity decreases with increasing CrO content and the CrO acts as a network modifier based on calculated DOP variations of quenched slags. The activation energy of the CrO content further validates these observations. The DOP is also found to increase with the addition of Al2O3.