Wasteless processing of ladle furnace and electric arc furnace slag
https://doi.org/10.17073/0368-0797-2021-3-192-199
Abstract
The actual problem of mineral resources depletion in ferrous metallurgy can be effectively solved by complex reuse of technogenic waste. That waste is mostly presented by EAF (electric arc furnace) slag and LF (ladle furnace) slag. These two kinds of slag have no complex full utilization. The residues of slag are going to the dump and then the slag dump locations pollute the environment. However, the residues of EAF and LF slag can be transformed into the valuable industrial product by interaction of the slag components. This work presents the research for joint wasteless processing of EAF and LF slag with production of Portland clinker and cast iron. The article describes disadvantages of known methods of each slag processing; the paper also shows the significance of LF slag utilization. Design and calculations of the research are presented as well as its experiment methodology. The final results show five chemical compositions for the mixtures, which allow the complex processing of this slag without any waste left. Such processing provides the production of cast iron and Portland clinker both meeting requirements of normative documents. The paper also describes the results of viscosity measurements of slag compositions, the obtained slag phases, and presents the final temperature conditions. The work also considers the results of industrial tests for the developed processing technology and a complete technological chain involving the use of tilt rotary furnaces.
Keywords
ladle furnace slag,
electric arc furnace slag,
Portland clinker,
cast iron,
chemical composition,
phase composition,
technogenic formations
Supporting agencies: The work was performed according to the state assignment of the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences.
About the Authors
O. Yu. Sheshukov
Institute of New Materials and Technologies, Ural Federal University named after the First President of Russia B.N. Yeltsin; Institute of Metallurgy, UB RAS
Russian Federation
Russian Federation
Oleg Yu. Sheshukov, Dr. Sci. (Eng.), Prof., Director; Chief Researcher of the Laboratory “Pyrometallurgy of Ferrous Metals”
28 Mira Str., Yekaterinburg 620002
101 Amundsena Str., Yekaterinburg 620016
D. K. Egiazar’yan
Ural Federal University named after the First President of Russia B.N. Yeltsin; Institute of Metallurgy, UB RAS
Russian Federation
Russian Federation
Denis K. Egiazar’yan, Cand. Sci. (Eng.), Assist. Prof. of the Chair “Metallurgy of Iron and Alloys”; Senior Researcher
28 Mira Str., Yekaterinburg 620002
101 Amundsena Str., Yekaterinburg 620016
D. A. Lobanov
Institute of Metallurgy, UB RAS
Russian Federation
Russian Federation
Daniil A. Lobanov, Research Associate of the Group of Technogenic
Waste Problems
101 Amundsena Str., Yekaterinburg 620016
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For citations:
Sheshukov O.Yu., Egiazar’yan D.K., Lobanov D.A. Wasteless processing of ladle furnace and electric arc furnace slag. Izvestiya. Ferrous Metallurgy. 2021;64(3):192-199. (In Russ.) https://doi.org/10.17073/0368-0797-2021-3-192-199
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