Smolensk Branch of the National Research University “Moscow Power Engineering Institute” (Smolensk, Russia)

M. I. Dli, Dr. Eng., Prof., Head of the Dept. of Information Technologies in Economics and Management, midli@mail.ru
V. I. Bobkov, Dr. Eng., Prof., Head of the Dept. of Higher Mathematics, vovabobkoff@mail.ru
A. A. Bykov, Cand. Ped., Associate Prof., Head of the Dept. of Physics, alex1by@mail.ru

Financial University under the Government of the Russian Federation (Moscow, Russia)
N. S. Kulyasov, Cand. Eng., Associate Prof., Dept. of International Business, nskulyasov@fa.ru

This paper presents the results of an experimental study of the effect of the composition of the iron ore part of the charge on the degree of its desulphurization and the content of iron oxide in the agglomerate during sintering of the studied raw materials. The experiments made it possible to determine the effect of the iron ore composition on the key indicators of the examined process, such as specific productivity of the process, yield of raw materials from a wet charge and vertical sintering rate. It was found out for iron-containing ore raw materials with different chemical composition, that presence of a large amount of sulphides in the composition leads to decrease in the sintering rate, to expansion of the high-temperature zone and to reduction of gas permeability in the sintered layer. It was revealed that ore with high iron content is sintered faster. However, with a high level of fuel addition, the sintering rate of both types of ore becomes comparable. It was detected that the degree of removal of sulphide sulfur decreases and the degree of removal of sulphate sulfur increases in laboratory studies of the sintering process, with an increase in the height of the sintered layer; it was also revealed that desulphurization degree depends extremely on the fuel consumption in the charge. An analysis of the data obtained showed that use of a slightly oxidizing environment in conditions close to sintering of the agglomerate, does not have a positive effect on desulphurization of ore deposits; it was also found that part of sulfur is removed during pyrite combustion when sintering the fluxed charge, and another part of sulfur is removed during decomposition of calcium sulphates. Replacing traditional limestone by fluoritized analogue with stable fuel combustion makes it possible to achieve reduction of sulfur in the sinter obtained, which was obtained from a large fraction of sinter ore.

The study was carried out with the financial support of the Ministry of Science and Higher Education of the Russian Federation, state assignment no. FSWF-2026-0010.

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