ORALS

SESSION: IronMonPM1-R3	Poveromo International Symposium (8th Intl. Symp. on Advanced Sustainable Iron & Steel Making)
Mon. 28 Nov. 2022 / Room: Arcadia 1
Session Chairs: Andrey Dmitriev; Session Monitor: TBA

14:50: [IronMonPM107] OS
CALCULATION OF THE COHESION ZONE IN A BLAST FURNACE TAKING INTO ACCOUNT THE METALLURGICAL CHARACTERISTICS OF IRON ORE MATERIALS
Andrey Dmitriev¹ ; Galina Vitkina² ; Roman Alektorov³ ; Elena Vyaznikova³ ; ¹Russian Academy of Sciences - Ural, Ekaterinburg, Russian Federation; ²Institute of Metallurgy of Ural Branch of Russian, Amundsen st., Russia; ³Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russian Federation;
Paper Id: 2 [Abstract]

As has shown long-term experiment of Institute of metallurgy of the Ural Branch of the Russian Academy of Sciences, at the solution of practical problems of ferrous metallurgy the increasing role is played by the information systems which basis are mathematical models of the physical, chemical and thermal processes proceeding in metallurgical units [1]. It is known that the cohezive zone in the blast furnace will be formed as a result of a softening of an iron ore component of burden, coke is in solid state. This zone makes limiting impact on productivity of the blast furnace [2]. Location and a form of a cohezive zone substantially is determined by character of unevenness of the temperature field depending on system of loading, the location of the tuyere center, a profile of shaft and change of gas dynamic resistance by height of the blast furnace; in temperatures of a softening and melting of the iron ore material, depending on extent of reduction [3]. Results of calculations of location and form of a zone of a cohezive in the blast furnace for iron ore materials with different metallurgical characteristics are given.

References:
[1] A.N. Dmitriev. Mathematical Modeling of the Blast Furnace Process. Cambridge, UK. Cambridge Scholars Publishing Ltd., 2019.
[2] A.N. Dmitriev, G.Yu. Vitkina, Yu.A. Chesnokov, R.V. Petukhov, IFAC Proceedings Volumes (2013) 302-306.
[3] A.N. Dmitriev, R.V. Petukhov, G.Yu. Vitkina, S.A. Petrova, Yu.A. Chesnokov, Defect and Diffusion Forum, 391 (2019) 221-225.

SESSION: MetalsTueAM-R3	Dmitriev International Symposium (6th Intl. Symp. on Sustainable Metals & Alloys Processing)
Tue. 29 Nov. 2022 / Room: Arcadia 1
Session Chairs: Madali Naimanbayev; Session Monitor: TBA

11:30: [MetalsTueAM01] OS Plenary
PHYSICOCHEMICAL BASES OF PYROMETALLURGICAL PROCESSING OF TITANOMAGNETITE ORES CONTAINING VARIOUS AMOUNTS OF TITANIUM DIOXIDE
Andrey Dmitriev¹ ; Galina Vitkina² ; Roman Alektorov³ ; Elena Vyaznikova³ ; ¹Russian Academy of Sciences - Ural, Ekaterinburg, Russian Federation; ²Institute of Metallurgy of Ural Branch of Russian, Amundsen st., Russia; ³Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences, Ekaterinburg, Russian Federation;
Paper Id: 187 [Abstract]

The results of laboratory, industrial and calculation researches of physical, chemical and thermophysical processes at the oxidizing roasting (sintering and pelletizing) of the titaniferous raw materials are considered. The estimation of influence of metallurgical properties (reducibility, durability, softening and melting temperatures of roasting ores) on processes heat and mass exchange at the reduction in the blast furnace is executed [1]. Titan-bearing ores with the various TiO2 content are investigated. Tests of ores are provided by ores of the current production in the Gusevogorsky deposit (Russian Federation, average test), and also ores from separate production of ores - is low titanium and is high titanium. Ores of the Kuranakhsky deposit (Russian Federation), the Tebinbulaksky deposit (Republic of Uzbekistan) and high titanium ores of the Medvedevsky deposit and the Yaregsky deposit (both Russian Federation) allowing receive pigmentary titanium dioxide are also considered. Processing of the specified ores assumes so-called schemes «blast furnace - converter» and «metallization - electrosmelting», including oxidizing roasting of ore concentrate with receiving agglomerate and pellets [2, 3]. The micro X-ray diffraction phase analysis and magnetic characteristics of samples is made. The results of industrial tests on change of metallurgical properties of agglomerate and its influence on blast furnace indices are given. Technical and economic indices of blast furnace smelting of agglomerate and pellets (coke consumption and productivity, chemical composition of cast iron and slag), received from a concentrate of the Kachkanarsky deposit, are calculated [4]. As a whole possibility and reasonability of processing of titaniferous ores with the different content of titanium dioxide and receiving vanadium containing cast iron and the slag containing titanium dioxide is shown. Possibility of processing the pigmentary titanium dioxide from titaniferous minerals is introduced [5].

References:
[1] A.N. Dmitriev, G.Yu. Vitkina, Yu.A. Chesnokov, Advanced Materials Research. 602-604 (2013) 365-375.
[2] A.N. Dmitriev, G.Yu. Vitkina, R.V. Petukhov, et al, Advanced Materials Research. 834-836. (2014) 364-369.
[3] A.N. Dmitriev, O.Yu. Sheshukov, G.I. Gazaleeva, et al, Applied Mechanics and Materials. 670-671 (2014) 283-289.
[4] A.N. Dmitriev, G.Yu. Vitkina, R.V.Petukhov, Pure and Applied Chemistry, 89, 10 (2017) 1543-1551.
[5] A.N. Dmitriev and L.I. Leontiev, Journal of Materials Science and Engineering B, 7, 11-12 (2017) 268-271.