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PROCESSING AND COMPLEX USAGE OF MINERAL RAW MATERIALS
ArticleName Drying and agglomeration of pellets made of red mud
DOI 10.17580/em.2024.01.13
ArticleAuthor Lebedev A. B., Noa H. L., Barinkov V. M.
ArticleAuthorData

Empress Catherine II Saint-Petersburg Mining University, Saint-Petersburg, Russia

Lebedev A. B., Researcher, Candidate of Engineering Sciences, 2799957@mail.ru

Barinkov V. M., Post-Graduate Student

 

Empress Catherine II Saint-Petersburg Mining University, Saint-Petersburg, Russia1 ; Maximo Gomez Baez University of Ciego de Avila, Cuba2

Noa H. L., Post-Graduate Student1, Assistant2

Abstract

Utilization of red mud (RM) is of strategic importance at a scale of a country. It seems to be promising to produce pellets made of red mud. RM pelletizing was carried out with a lab-scale dish pelletizer with a diameter of 30 cm and a side height of 10 mm in rotation at a speed of 30 min–1. Before pelletizing, RM had a moisture content of 10%. Baking was carried out in the oxidizing atmosphere created by the jet feed of a natural gas and oxygen mixture at a ratio of 1 : 1.6 in the reaction cell. In all tests, the gas–air flow rate was 2.5 l/min. The test samples had a weight of 4–6 g. Wet pellets made of RM were placed in a boat and set in a lab-scale tubular kiln. The quality analysis of baked pellets followed a standard flowsheet, with determination of chemical composition, compression strength and reduction strength of pellets in accordance with state standard GOST 19575-84. The baking tests of pellets made of RM were carried out at the varied temperatures in a range of 1000–1400 °C and in the different regimes of heating, dependent on the movement velocity of the tube which pushes the boat with pellets through the reaction zone. The analysis of the result defines the optimal temperature range for baking RM pellets from 1180 to 1250 °C. It is found that for the pellets with the basicity from 1.8 to 3.0, the increase of the heating rate over 20 mm/min leads to a significant decrease in the strength of the test samples. The test pellets baked at the temperature of 1200 °C have a high strength. In reduction, the compression strength is 120–140 kg/pellet. Red mud is found to be well pelletizable. The temperature of fluxing onset and surface melting of the test samples is 1180–1250 °C, and sodium sulfides get totally removed from the composition of the product in this case. For all pellets made of red mud with the basicity from 1.8 to 3.0, the typical fluxing and surface melting temperature ranges from 1180 °C to 1250 °C.

keywords Red mud, pellets, decarbonization, nodulization, balling, strength, baking
References

1. Boikov A. V., Savelyev R. V., Payor V. A., Erokhina O. O. Evaluation of bulk material behavior control method in technological units using DEM. Part 1. CIS Iron and Steel Review. 2020. Vol. 19, No. 1. pp. 4–7.
2. Sizyakov V. M., Litvinova T. E., Brichkin V. N., Fedorov A. T. Modern physicochemical equilibrium description in Na2O–Al2O3–H2O system and its analogues. Journal of Mining Institute. 2019. Vol. 237. pp. 238–306.
3. Nasifullina A. I., Gabdulkhakov R. R., Rudko V. A., Pyagay I. N. Petroleum coking additive is a raw material for production of metallurgical coke. Part 1. Formation of sintering properties of petroleum coking additive (review). Chernye Metally. 2022. No. 9. pp. 13–20.
4. Frolov Yu. A. Agglomeration. Technology. Heat Engineering. Control, Ecology. Moscow : Metallurgizdat, 2016. 672 p.
5. Bersenev I. S., Gorbachev V. A., Klein V. I., Petrishev A. Yu., Yaroshenko Yu. G. Relationship of limit stresses in agglomerate and its strength in revolving drum. Stal. 2013. No. 1. pp. 6–8.
6. Shiryaeva E. V., Podgorodetskiy G. S., Malysheva T. Y., Gorbunov V. B., Detkova T. V. Influence of low-alkali red mud on the composition and structure of sintering batch consisting of heterogeneous iron-ore concentrates. Steel in Translation. 2014. Vol. 57, No. 9. pp. 625–628.
7. Aydin S., Aydin M. E., Beduk F., Ulvi A. Removal of antibiotics from aqueous solution by using magnetic Fe3O4/red mud-nanoparticles. Science of the Total Environment. 2019. Vol. 670. pp. 539–546.
8. Trushko V. L., Utkov V. A., Bazhin V. Yu. Topicality and possibilities for complete processing of red mud of aluminous production. Journal of Mining Institute. 2017. Vol. 227. pp. 547–553.
9. Khalifa A. A., Bazhin V. Y., Ustinova Y. V., Shalabi M. E. Study of the kinetics of the process of producing pellets from red mud in a hydrogen flow. Journal of Mining Institute. 2022. Vol. 254. pp. 261–270.
10. Zubkova O., Alexeev A., Polyanskiy A., Karapetyan K., Kononchuk O., Reinmöller M. Complex processing of saponite waste from a diamond-mining enterprise. Applied Sciences. 2021. Vol. 11, No. 14. ID 6615.
11. Hoang M. D., Do Q. M., Le V. Q. Effect of curing regime on properties of red mud based alkali activated materials. Construction and Building Materials. 2020. Vol. 259. ID 119779.
12. Litvinenko V., Naumov I., Bowbriсk I., Zaitseva Z. Global guidelines and requirements for professional competencies of natural resource extraction engineers: Implications for ESG principles and sustainable development goals. Journal of Cleaner Production. 2022. Vol. 338. ID 130530.
13. Bersenev I. S., Petryshev A. Yu., Kolyasnikov A. Yu., Milokhin E. A., Semenov O. A. et al. Improving sinter at PAO NLMK. Steel in Translation. 2018. Vol. 48, No. 9. pp. 585–592.
14. Bobkov V. I., Dli M. I., Fedulov A. S. Simulation of pellet drying process from apatite–nepheline ores wastes. Bulletin of the Saint Petersburg State Institute of Technology (Technical University). 2020. No. 55. pp. 109–115.
15. Cheng S., Shevchenko M., Hayes P. C., Jak E. Experimental phase equilibria studies in the FeO-Fe2O3-CaO-SiO2 system in air: Results for the iron-rich region. Metallurgical and Materials Transactions B. 2020. Vol. 51, No. 4. pp. 1587–1602.
16. Shao F., Zhuang Y., Ni J., Sheng J. et al. Comparison of the microstructural characteristics and electrical properties of plasma sprayed Al2O3 and Al2O3–Ca2SiO4 coatings immersed in deionized water. Surface and Coatings Technology. 2021. Vol. 422. ID 127530.
17. Piirainen V. Yu., Barinkova A. A. Development of composite materials based on red mud. Obogashchenie rud. 2023. No. 3. pp. 37–43.
18. Krylova S. A., Sysoev V. I., Alekseev D. I., Sergeev D. S., Dudchuk I. A. Physical and chemical characteristics of high-magnesian siderites. Bulletin of the South Ural State University. Series ‘Metallurgy. 2017. Vol. 17, No. 2. pp. 13–21.
19. Grudinskii P. I., Dyubanov V. G., Zinoveev D. V., Zheleznyi M. V. Solid-phase reduction and iron grain growth in red mud in the presence of alkali metal salts. Russian Metallurgy (Metally). 2018. Vol. 2018, No. 11. pp. 1020–1026.
20. Mardashov D. V., Bondarenko A. V., Raupov I. R. Design procedure of technological parameters of non-Newtonian fluids injection into an oil well during workover operation. Journal of Mining Institute. 2022. Vol. 258. pp. 881–894.
21. Feshchenko R. Yu., Erokhina O. O., Litavrin I. O., Ryaboshuk S. V. Improvement of oxidation resistance of arc furnace graphite electrodes. Chernye Metally. 2023. No. 7. pp. 31–36.
22. Polyakov A. A., Gorlanov E. S., Mushihin E. A. Analytical modeling of current and potential distribution over carbon and low-consumable anodes during aluminum reduction process. Journal of the Electrochemical Society. 2022. No. 5. pp. 22–29.
23. Efimenko G. G., Kovalev D. A. Control of agglomerate structure formation with a view of its strengthening. Izvestiya Akademii Nauk SSSR, Metally. 1966. No. 6. pp. 3–10.
24. Karpov K. S., Karpov A. V. Solid-phase reduction of iron oxides at a laboratory scale. Sovremenniye materialy, tehnika i tehnologii. 2018. No. 1(16). pp. 27–32.
25. Kudinova A. A., Poltoratckaya M. E., Gabdulkhakov R. R., Litvinova T. E., Rudko V. A. Parameters influence establishment of the petroleum coke genesis on the structure and properties of a highly porous carbon material obtained by activation of KOH. Journal of Porous Materials. 2022. Vol. 29, No. 5. pp. 1599–1616.
26. Sharikov Yu. V., Sharikov F. Yu., Titov O. V. Optimal control of annealing during the preparation of aluminum hydroxide and cement clinker in tubular rotary kilns. Theoretical Foundations of Chemical Engineering. 2017. Vol. 51, No. 4. pp. 503–507.
27. Korzhayeva E. A., Voischev A. E., Hoshafyan S. O. et al. Study of the influence of prescription factors on the formation of the fusion structure and properties of heavy concrete. The Eurasian Scientific Journal. 2019. Vol. 11, No. 6.
28. Maksimov L. I., Mirinov V. V. Technology improvement of high-dispersive metallic iron powders based on sediments of iron removal station. Vestnik Tomskogo gosudarstvennogo arkhitekturno-stroitel’nogo universiteta. Journal of  Construction and Architecture. 2020. Vol. 22, No. 2. pp. 162–173.
29. Puzanov V. P., Kobelev V. A. The introduction into the metallurgical structure formation technologies. Yekaterinburg : UrO RAN, 2005. 501 p.
30. Malysheva T. Ya., Dolitskaya O. A. Petrography and mineralogy of crude iron ore : University textbook. Moscow : MISIS, 2004. 424 p.
31. Jin J., Liu X., Yuan S., Gao P., Li Y. et al. Innovative utilization of red mud through co-roasting with coal gangue for separation of iron and aluminum minerals. Journal of Industrial and Engineering Chemistry. 2021. Vol. 98. pp. 298–307.
32. Su Z., Li L., Liu Z. et al. Fabrication, microstructure, and hydration of nano β-Ca2SiO4 powder by co-precipitation method. Construction and Building Materials. 2021. Vol. 296. ID 123737.
33. Kovalskaya K. V., Gorlanov E. S. Al–Ti–B master alloys: Structure formation in modified alloys. Tsvetnye Metally. 2022. No. 7. pp. 57–64.
34. Ortega J. M., Cabeza M., Tenza-Abril A. J., Real-Herraiz T., Climent M. Á. Effects of red mud addition in the microstructure, durability and mechanical performance of cement mortars. Applied Sciences. 2019. Vol. 9, Iss. 5. pp. ID 984.
35. Aleksandrov V. I., Vasileva M. A. Hydraulic transportation of thickened tailings of iron ore processing at Kachkanarsky GOK based on results of laboratory and pilot tests of hydrotransport system. Journal of Mining Institute. 2018. Vol. 233. pp. 471–479.

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