DEVELOPMENT OF A MODEL OF THE INTERACTION PROCESS OF THE COMPONENTS OF A TWO-PHASE FLOW INTRODUCED INTO CAST IRON DURING INJECTION DESULFURIZATION

Actual results of the industrial application of out-of-furnace desulfurization indicate that practical results of the technology in many cases are not sufficiently stable. The studies were conducted on computational and "cold" physical models. Magnesium, ground lime, calcium carbide - desulfurizing reagents. Based on the actual results of physical modeling and further calculations, improved expression was formulated for calculating the depth of jet immersion depending on the parameters of the injection lance. It is shown that during injection desulfurization of cast iron, the gas component of the flow stops its directional movement in the melt up to 80 mm (actually 50-60 mm), solid particles continue to move in the cavity and hit the surface of this cavity. To assess further movement of the particle through the "gas cavity-melt" boundary, model was developed to determine the depth of immersion of reagent particlesas a function of the injection velocity of the two-phase flow.