Snigura I. Development of criteria and complex indicators for the description of physicochemical interactions in the system "metal-slag" during out-of-furnace processing of steel

The dissertation is devoted to the decision of a topical question - development of complex indicators of physicochemical, thermophysical properties of metal, slag melts and additives for the purpose of their directed influence on coefficients of distribution of elements between final products of melting at finishing of steel on installation of ladle-furnace. The physicochemical potential of interatomic interaction parameters was revealed for the first time, in particular ρl - from the standpoint of estimating microheterogeneity of metallurgical melts, and tgα - as an indicator of recharging processes and chemical activity of metal systems and their informative significance in predicting properties of steels and alloys. From the standpoint of ion exchange processes in the "metal-slag" system, the thermodynamic capacity of the slag melt to remove sulfur and phosphorus was estimated to bring the system closer to the equilibrium state for the conditions of production of DMK and DSS. An original conceptual scheme for solving problems of forecasting final products, the essence of which is to express the final products of smelting as a function of dependence on the initial parameters of metal, slag, additives and technology, the efficiency of which is tested on the example of structural and ball bearings.