Ural Institute of Metals (Ekaterinburg, Russia):

B. L. Demin, Cand. Eng., Executive Director of SRC Processing and Use of Man-made Wastes, e-mail: b.demin@uim_stavan.ru
L. A. Smirnov, Dr. Eng., Academician of the Russian Academy of Sciences, Research Supervisor, Chief Researcher of the Institute of Metallurgy of the Ural Branch of the Russian Academy of Sciences
Yu. V. Sorokin, Cand. Eng., Senior Researcher, Scientific Consultant
E. N. Shcherbakov, Leading Engineer

Processing of highly basic slags in the liquid state with the use of traditional energy carriers (water, compressed air, steam) is difficult due to the rapid increase in viscosity during cooling of the melt. Variants of processing of liquid metallurgical slags by a stream of compressed air and metal bodies moving in a cavity of a drum on a grate are considered. An experimental installation of rotor (drum) type has been developed. The mechanism of melt stream destruction and cooling of slag by metal bodies has been proposed. According to the results of experiments on the experimental plant, an industrial unit for processing of liquid converter slag was developed, which was successfully implemented at the Baosteel plant (PRC). To study the technology of liquid slag processing, a small experimental-industrial plant was created, which was tested at metallurgical enterprises for processing of blast furnace, steel, ferroalloy and copper smelting slags. Devices for shaping the finished product are proposed. The design of the installation of similar type created in FSUE TsNIIchermet named after I. P. Bardin is considered. The research results and prospects of application of rotary type plants for processing of metallurgical slags in a liquid state are presented.

1. Panfilov М. I., Shkolnik Ya. Sh., Orininskiy N. V., Kolomiets V. А., Sorokin Yu. V., Grabeklis А. А. Slag processing and waste-free technology in metallurgy. Moscow: Metallurgiya, 1987. 238 p.
2. Engstrom F., Adolfsson D., Yang Q., Samuelsson C., Bjokman B. Features of crystallization of steelmaking slags. Steel Res. Int. 2010. Vol. 81, Iss. 5. pp. 762–776.
3. Jun Zhou, Zhu Shu, Xiaohua Hu, Yanxin Wang. Direct utilization of liquid slag from a phosphorus melting arc furnace to obtain cast stone as a decorative building material. Constr. and Build. Mater. 2010. Vol. 24, Iss. 5. pp. 811–817.
4. Kashiwaya Yoshikai, Akiyama Tomoxiro, In-Nami Yutaro. Latent heat of amorphous slags and the use of slags as high-temperature materials changing their phase state. Int. 2010. Vol. 50, Iss. 9. pp. 1259–1264.
5. Proshkina О. B. Suggestions for improving the scheme of steelmaking slag processing. Proceedings of the international scientific and technical conference. “Scientific bases and practice of processing of ores and technogenic raw materials”, Ekaterinburg, 16–17 April, 2010. Ekaterinburg: Ford-Dialog-Iset, 2010. pp. 55–60.
6. Jianping Liu, Daoging Guo, Juanyue Zhu, Xiaofeng Chen. Current state and prospects of steel slag utilization at Baosteel. Baosteel Tech. res. 2011. Vol. 5, Iss. 2. pp. 15–19.
7. Tells V. B., Alves J. O., Espinoza D. S. R., Tenorio J. A. S. Utilization of waste generated in the steelmaking process. EPD Congress 2011 Proceedings of the Symposia held during the TMS 140 Annual Meeting and Exhibition, San Diego, Calif. 2011. Haboken (N.J.) Wiley; Warrenale (Pa) : TMS. 2011. pp. 967–974.
8. Artificial aging of steelmaking slag. Novosti chernoy metallurgii za rubezhom. 2012. No. 4. pp. 105–107.
9. Mc Donald Ian J., Werner Andred. Environmentally friendly plant for dry slag granulation and its use in cement production. AISTech 2013 Proceedings, Pittsburg, Pa 6–9. May, 2013. Warrendal (Pa) 2013. pp. 649–656.
10. Kovalev V. N. Metallurgical complex for obtaining marketable products from materials of man-made and natural origin. Stal. 2013. No. 4. pp. 78–82, 85.
11. Agafonov S. А., Putintsev V. А., Stratonovich V. N. Development of parameters of the process of dry granulation of slag by low-pressure air flow. Complex processing of slags of metallurgical production: Works of UralTsNIIChermet. Sverdlovsk. 1982. pp. 104–109.
12. Vitkalov V. S. Cheremnykh F. А. Zheleznov V. G. et. al. Influence of thermal stabilization of self-decomposing slags of Oskol Metallurgical Plant on their properties. Slag of ferrous metallurgy, their processing and use: Thematic industry collection. Sverdlovsk. UralNIIChermet, 1990. pp. 74–79.
13. SAP (slag spray plant). Available at: http://www.ecomaister.tradekorea.com. Accessed: 21 September 2020.
14. Shkolnik Ya. Sh., Demin B. L., Sorokin Yu. V. et. al. Method and device for processing of slag. Patent RF, No. 2018494. Applied: 20.04.1992. Published: 30.08.1994. Byulletin No. 16.
15. Shkolnik Ya. Sh., Demin B. L., Sorokin Yu. V. et. al. Patent RF, No.2044712. Installation for processing of metallurgical slags. Applied: 25.09.1992. Published: 27.09.1995.
16. Smirnov L. А., Sorokin Yu. V., Demin B. L. Technological methods of processing slag in the liquid state. Chernaya metallurgiya. Byulleten nauchno-tekhnicheskoy i ekonomicheskoy informatsii. 2008. No. 7. pp. 30–35.
17. Sorokin Yu. V., Demin B. L., Smirnov L. А. Processing of MSP slag in an experimental installation of drum type with a spherical header. Stal. 2012. No. 3. pp. 70–73.
18. Cao Jidong. Installation for treatment of liquid steelmaking slag by the method of application of a rotary cylinder on Baosteel and their production results. Baosteel Org. 2001.
19. Demin B. L., Sorokin Yu. V., Shcherbakov Е. N. et. al. Technical solutions for processing of selfdecomposing slags. Chernaya Metallurgiya. Byulleten nauchno-tekhnicheskoy i ekonomicheskoy informatsii. 2012. No. 12 (1356). pp. 63–71.
20. Sorokin Yu. V., Demin B. L., Rytvin V. М. Processing of slags of aluminothermic production of ferroalloys. Rasplavy. 2011. No. 3. pp. 68–73.
21. GOST 3344–83. Slag crushed stone and slag sand for road construction. Specifications. Introduced; 01.01.1985.
22. Demin B. L., Sorokin Yu. V., Shcherbakov Е. N. et. al. Prospects for the use of drum-type plants for processing of metallurgical slag. Metallurg. 2015. No. 11. pp. 31–33.
23. Sorokin Yu. V., Demin B. L., Smirnov L. A., Shcherbakov Е. N. Possibility of utilization of physical heat of slag on installations of drum type. Proceedings of the congress with international participation and the conference of young scientists “Basic research and applied development of processes for processing and utilization of man-made formations”. TEKhNOGEN 2019. pp. 41–45.
24. Shakurov А. G., Shkolnik Ya. Sh., Zhuravlev V. V., Parshin V. М., Chertov А. D., Kovalev V. N., Fedotov О. V., Morov D. V. The results of development of technology and equipment for processing and stabilization of slag melt into a marketable product. Chernaya Metallurgiya. Byulleten nauchno-tekhnicheskoy i ekonomicheskoy informatsii. 2014. No. 2. pp. 82–86.
25. Shkolnik Ya. Sh., Parshin V. M., Chertov A. D., Shakurov A. G. Device for slag melts processing. Patent RF, No. 2501750. Published: 20.12.2013.
26. Shkolnik Ya. Sh., Shakurov A. G., Chertov A. D., Parshin V. M. Method for complex processing melts and process line for its implementation. Patent RF, No. 2600297. Published: 20.10.2016.
27. Shakurov A. G. Method of innovative technology for processing liquid steelmaking slags based on the study of accelerated solidification processes: Dissertation … of Candidate Engineering Sciences: 05.16.02. TsNIIchermet. Moscow, 2014. 181 p.