With the development of the energy control system of metallurgical enterprises, the urgency of solving the problem of resource- and energy-saving control of steelmaking processes increases, taking into account the reconfiguration of production to a new task, intensification of the processes of recycling of raw materials and materials, as well as reducing the waste intensity of production. One of the tools for solving the problem of resource- and energy saving of steelmaking production is the creation of a computer system that allows to analyze the state of the refractory lining of the converter, calculation of the material and thermal balances, the quantitative characteristics of slag corrosion, the amount of slag-forming materials, as well as predict the phase and chemical composition of the slag in order to impart the properties necessary in the production of mineral binders and other building materials. The computer system allows to identify complex fuzzy relation-ships between process parameters and issue recommendations on resource- and energy-saving control of the converter process, taking into account the waste recycling. Testing of the computer system according to the data of the enterprises CherMF (PJSC Severstal) and PJSC NLMF confirmed its operability and the possibility of use at metallurgical enterprises.