DOI: 10.52150/2522-9117-2019-33-106-114

Togobitskaya Daria Nikolaevna, Dr. Sci. (Engin.), Professor, Head of the Department, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; email: dntog@ukr.net, isi-ofhp@mail.ru ORCID 0000-0001-6413-4823
Vergun Alexander Sergeevich, Dr. Sci., (Engin.), Senior Research Scientist, Iron and Steel Institute named after Z.I. Nekrasovof the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: ovoch-isi@outlook.com, ORCID 0000-0001- 5493-9214
Molchanov Lavr Sergeevich, PhD (Engin.), Senior Research Scientist, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; ORCID 0000-0001-6139-5956
Kislyakov Vladimir Gennadyevich, PhD (Engin.), Senior Researcher, Head of Department, Iron and Steel Institute named after Z.I. Nekrasovof the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107; e-mail: ovoch-isi@outlook.com, vovkadragon@yandex.ua, ORCID 0000-0002-1775-5050
Likhachev Yuri Mikhailovich, Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107;
Khodotova Nadiya Evstakhivna, Junior Researcher, Iron and Steel Institute named after Z.I. Nekrasov of the NAS of Ukraine, Academican Starodubova square, 1, Dnipro, Ukraine, 49107;

«Out-of-furnace cast iron processing» subsystem in the solution of tasks for the choice of rational technology for producing quality metal products under the applicable conditions of raw material and technological

Summary. The creation of end-to-end technology for the production of competitive metal products in modern conditions puts on the agenda the task of choosing the optimal metal production technology scheme. In solving this problem, a significant role belongs to the development of an informationmodeling system for analysis and decision making. An important link in endto-end technology is the after-furnace treatment of cast iron. As the analysis of various technological solutions for pig iron desulfurization has shown, the process developed at the Institute of Ferrous Metallurgy is currently the most economical, rational and preferred. The process is carried out by blowing through the immersed tuyeres of dispersed granular magnesium without additives. A special dosing and injection system is used. The developed process has undergone numerous industrial testing at domestic and foreign factories. To optimize the process of end-to-end technology and its information mathematical support, modular mathematical models have been developed. An integrated database has been created that summarizes information on the parameters of cast iron desulfurization technology with granular magnesium. The expert system «Out-of-furnace cast iron processing» is described and presented, which allows to obtain high-quality metal products. The adequacy of the developed model for predicting the specific consumption of magnesium in
the after-furnace treatment of cast iron was studied. The completed developments created the prerequisites for building the architecture of the Expert Decision Making System. The replenishment of the database with information on current and other technologies for pig iron desulfurization will make it possible to refine the existing and obtain descriptive models for various reagents, which will serve as the basis for the algorithmic support of the analytical unit of the expert system.
Key words: desulfurization, cast iron, magnesium, information system, model.

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