Kravchenko V.P., Gankevich V.F., Taranina O.V., Moskalova T.V. The latest technology trends for slag processing in steel industry

Details

Parent Category: Geo-Technical Mechanics, 2020

Category: Geo-Technical Mechanics, 2020, Issue 150

Geoteh. meh. 2020, 150, 156-166

https://doi.org/10.15407/geotm2020.150.156

 

THE LATEST TECHNOLOGY TRENDS FOR SLAG PROCESSING IN STEEL INDUSTRY

¹Kravchenko V.P., ²Gankevych V.F., ¹Taranina O.V., ²Moskalova T.V.

¹Pryazovskyi State Technical University MES of Ukraine, ²National Technical University “Dnipro Polytechnic”

UDC  622.24+669.054.82

Language: English

Annotation.

Accumulation of metallurgical slag caused a number of heavy environmental problems, which led to a significant withdrawal of valuable land from use. The objective of this work was to identify the main directions for the development of new technological processes for the complete and waste-free processing and recycling of melted slags, gravel slags, dump slags and to outline the main directions for the research. To this end, works of the Ukrainian and foreign scientists in the field of metallurgical slag processing were analyzed, and the conclusion was made about the environmental and economic efficiency of metallurgical slag processing. The modern principle is formulated for the metallurgical industry, according to which slag should not be considered as waste. On the contrary, slag, like metal, should be considered as one more product of the blast furnace. This principle requires to develop a set of new technological approaches for the melted slag and solid (granular) slag processing into the cheap and valuable materials for industry. This approach will significantly reduce cost of the iron output. The thematic focus of research and technological developments for solving the designated modern principle in metallurgy are determined. For solving the problem of reducing negative impact of metallurgical enterprises on the environment and increasing profitability of their production, the following issues were researched and solved:

1. Determination of the heat content of fire-liquid slag (the melts). Calculation of generating capacity of the equipment, which uses the utilized heat of the melted slags. The calculations were carried out for the conditions of the Ilyich Iron And Steel Plant, Mariupol. Temperature of the melted slag discharged from the blast furnace of the plant is 1400-1450ºС.

2. Usage of dump waste for producing binder materials and micro-fillers for additives into the high-strength concrete. The technological scheme for processing and technological line for obtaining Portland cement clinker are presented.

Implementation of these developments allows to reduce energy consumption at the enterprise, to use slag for obtaining valuable raw materials, and to solve the environmental problem.

Keywords:

recycling, metallurgical slug processing, clinker, melted slug, environmental protection.

References

1. Kravchenko, V. and Strutynskyi, V. (2007), “Hydraulic activity of blast-furnace slags”, Stal, no. 1, pp. 94-95.

2. Kravchenko, V., Fentosov, I., Strutinsky, V. and Cherkasin, A. (2006), Sposіb pererobki vіdval’nikh metalurgіinikh shlakіv. [Method of processing of dump metallurgical slags], Kyiv, Ukraine, Patent No 18107 UA.

3. Kravchenko, V. (2011), Results of experiments of receipt of clinker from wastes of metallurgical production”, Vestnik Priazovskogo gosudarstvennogo tekhnicheskogo universiteta Sbornik nauchnykh Trudov, no. 22,  pp. 50-54.

About the authors

Kravchenko Volodymyr Petrovych, Candidate of Technical Sciences (Ph.D), Sinior Researcher, Sinior Researcher in Pryazovskyi State Technical University, Mariupol, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Gankevych Valentyn Feodosiiovych, Candidate of Technical Sciences (Ph.D.), Associate Professor, Associate Professor, Associate Professor in Department of Mining Machines and Engineering, National Technical University «Dnipro Polytechnic» (NTU «DP»), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Taranina Olena Volodymyrivna, Master of Science, Senior Lecturer in Pryazovskyi State Technical University, Mariupol, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Moskalova Tetiana Vitaliivna, Candidate of Technical Sciences, Associate Professor, Associate Professor in Department of Mining Machines and Engineering of National Technical University «Dnipro Polytechnic» (NTU «DP»), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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