Features of the phase and structural transformations in the processing of industrial waste from the production of high­alloyed steels

Authors

DOI:

https://doi.org/10.15587/1729-4061.2020.205779

Keywords:

oxide anthropogenic waste, alloy steel scale, reduction smelting, X-ray phase studies

Abstract

We have investigated the physical and chemical properties of the alloy obtained by reduction smelting using wastes from the production of highly-alloyed steels and alloys. This is necessary to determine the technological aspects that reduce the loss of doping components when obtaining and using a doping alloy. The study results indicate that at the charge's oxygen-to-carbon ratio of 2.25, the alloy consisted mainly of a solid solution of doping elements in γ-Fe. At the charge's oxygen-to-carbon ratio of 1.67, we also observed Fe3C, followed by an increase in the intensity of carbide manifestation at the oxygen-to-carbon ratio of 1.19. Photographs of the microstructure clearly showed several phases with a different ratio of doping elements. The Ni content in the examined sections of various phases changed within 1.38‒46.38 % by weight, Cr ‒ 3.45‒45.32 % by weight, W ‒ 1.51‒27.32 % by weight, Mo ‒ 0.48‒10.38 % by weight. Mo, W, Nb mostly concentrated in individual particles. The Nb content in some inclusions reached 47.62 % by weight. Analysis of the study results has shown that the most beneficial charge's oxygen-to-carbon ratio is 1.67. At the same time, the phase composition is dominated by a solid solution of doping elements in γ-Fe. The proportion of residual carbon, which was in the form of a carbide component, accepted values in the range of 0.52‒2.32 % by weight while providing the necessary reducing capacity when using the alloy. Our research has identified new technological aspects in the processing of highly-alloyed anthropogenic waste when obtaining an alloy with a relatively low residual carbon content. The resulting parameters of the resource-saving doping material ensure the possibility to replace some of the standard ferroalloys when smelting steels with certain carbon content restrictions.

Author Biographies

Viacheslav Borysov, Donbass Institute of Technique and Management Private Higher Educational Establishment “Academician Yuriy Bugay Internationalscientific and Technical University” Mashynobudivnykiv blvd., 32, Kramatorsk, Ukraine, 84313

Head of Laboratory

Research Laboratory of Applied Materials Science

Andrii Lytvynov, Donbass Institute of Technique and Management Private Higher Educational Establishment “Academician Yuriy Bugay Internationalscientific and Technical University” Mashynobudivnykiv blvd., 32, Kramatorsk, Ukraine, 84313

Senior Researcher

Research Laboratory of Applied Materials Science

Nikolai Braginets, Kharkiv Petro Vasylenko National Technical University of Agriculture Alchevskykh str., 44, Kharkiv, Ukraine, 61002

Doctor of Technical Sciences, Professor

Department of Technical Systems and Technologies of Livestock Breeding named after B. P. Shabelnik

Artem Petryshchev, National University “Zaporizhzhya Polytechnic” Zhukovskoho str., 64, Zaporizhzhya, Ukraine, 69063

PhD, Associate Professor

Department of Labour and Environment Protection

Sergey Artemev, National University of Civil Defence of Ukraine Chernyshevska str., 94, Kharkiv, Ukraine, 61023

PhD, Associate Professor, Head of Department

Department of Occupational, Technogenic and Environmental Safety

Bohdan Tsymbal, National University of Civil Defence of Ukraine Chernyshevska str., 94, Kharkiv, Ukraine, 61023

PhD

Department of Occupational, Technogenic and Environmental Safety

Anatolii Poliakov, Luhansk National Agrarian University Slobozhanska str., 68, Starobilsk, Ukraine, 92703

PhD, Associate Professor

Department of Machine Repair, Operation of Energy and Labor Protection

Viacheslav Bratishko, National University of Life and Environmental Sciences of Ukraine Heroiv Oborony str., 15, Kyiv, Ukraine, 03041

Doctor of Technical Sciences, Senior Researcher

Department of Transport Technologies and Means in AIC

Volodymyr Kuzmenko, National Scientific Center "Institute of Mechanization and Electrification of Agriculture" Vokzal'na str., 11, smt. Glevaha, Ukraine, 08631

PhD, Senior Researcher, Head of Department

Department of Biotechnical Systems in Animal Husbandry and Harvesting of Forages

Oleksandr Kholodiuk, Vinnytsia National Agrarian University Soniachna str. 3, Vinnytsia, Ukraine, 21008

PhD

Department of Agroengineering and Technical Service

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Published

2020-06-30

How to Cite

Borysov, V., Lytvynov, A., Braginets, N., Petryshchev, A., Artemev, S., Tsymbal, B., Poliakov, A., Bratishko, V., Kuzmenko, V., & Kholodiuk, O. (2020). Features of the phase and structural transformations in the processing of industrial waste from the production of high­alloyed steels. Eastern-European Journal of Enterprise Technologies, 3(10 (105), 48–54. https://doi.org/10.15587/1729-4061.2020.205779

Issue

Vol. 3 No. 10 (105) (2020): Ecology

Section

Ecology

License

Copyright (c) 2020 Viacheslav Borysov, Andrii Lytvynov, Nikolai Braginets, Artem Petryshchev, Sergey Artemev, Bohdan Tsymbal, Anatolii Poliakov, Viacheslav Bratishko, Volodymyr Kuzmenko, Oleksandr Kholodiuk

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