EXPERT ASSESSMENT OF THE THERMODYNAMIC STATE OF THE "METAL-SLAG" SYSTEM IN REDUCING AND OXIDIZING CONDITIONS
DOI:
https://doi.org/10.34185/1991-7848.itmm.2023.01.058Keywords:
cast iron, steel, slag, distribution of elements between metal and slag melts, thermodynamic state of the , parameters of interatomic interaction.Abstract
A new approach has been developed to assess the thermodynamic state of the "metal-slag" system in the production of cast iron and steel using the parameters of interatomic interaction. As a result of computational and analytical studies of the indicators of the melting products of the blast-furnace and steelmaking processes, the regularities of the coordinated change in the chemical compositions of the metal and slag melts were revealed. A close relationship has been established between the integral indicators of metal (ZY) and slag (, e), characterizing the chemical and structural state of their melts. As a criterion for evaluating the thermodynamic matching of melts of the "metal-slag" system when it tends to equilibrium, an analytical expression is proposed in the form , which can be implemented in automated process control systems to solve the problems of controlling the thermal and slag modes of iron production and steel of the required composition.
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