Kinetics and Mechanism of Decarburization and Melting of Direct-Reduced Iron Pellets in Slag

An experimental study was conducted to understand the decarburization and melting behavior of direct-reduced iron (DRI) pellets in SiO2-Al2O3-CaO-MgO-FeO slags with various FeO concentrations (10 to 25 wt pct) and basicities (Bs), ranging from 1.5 to 2.5. The behavior of the pellet in slag was observed using the X-ray fluoroscopy technique; the rate of decarburization was simultaneously measured with a constant volume pressure increase …