HIGH-TEMPERATURE MODELING OF THE INTEGRATED CAST IRON REFINING PROCESS

Abstract

The aim of this work is to identify patterns in the behavior and distribution of impurities in cast iron during comprehensive processing on a high-temperature model, taking into account the influence of thermodynamic and kinetic factors, in order to optimize purification processes and improve metal quality. Studies using high-temperature models, which involve working directly with molten cast iron, are of particular value. Calculations were performed for the conditions of injection treatment of cast iron with the aim of comprehensive impurity removal in a 100-kg laboratory induction furnace. Five consecutive treatments were conducted. The treatments were accompanied by sampling of cast iron and slag, temperature measurement, and recording of the reagent dosage. During the treatments, the technological parameters of the injection were optimized, which allowed the treatment to be carried out efficiently without excessive turbulence. An analysis of the impurity content in the cast iron showed that, given the experimental conditions, desulfurization, desiliconization, and dephosphorization processes occur, including simultaneously.