The role of mathematical models in improving the technology of blast furnace melting is shown [1]. Examples of new developments of the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences in the field of digital models of blast furnace production are given, in particular, two-dimensional and three-dimensional mathematical models of the thermal state of various zones of the blast furnace [2, 3]. New developments in the field of analysis and control of various thermophysical and physico-chemical phenomena occurring in various zones of the blast furnace allow us to raise the technology and methods of conducting blast furnace melting to a fundamentally new level, allowing us to save fuel and energy resources. The possibility of using a digital model at a pace with the process when using sensor readings through the database management system of the blast furnace shop of the enterprise is shown.