Журналы →  Gornyi Zhurnal →  2022 →  №5 →  Назад

Название Justification of manufacturing parameters for extrusion smelt-and-fuel briquetting
DOI 10.17580/gzh.2022.05.05
Автор Aleksandrov B. M., Grevtsev N. V., Gorbunov A. V., Oleinikova L. N.
Информация об авторе

Ural State Mining University, Yekaterinburg, Russia:

B. M. Aleksandrov, Professor, Doctor of Engineering Sciences
N. V. Grevtsev, Head of Department, Professor, Doctor of Engineering Sciences, n.v.grevtsev@mail.ru
A. V. Gorbunov, Associate Professor, Candidate of Engineering Sciences
L. N. Oleinikova, Senior Lecturer


Extrusion smelt-and-fuel briquettes represent an agglomerate of fine disperse metal and fuel component. The fuel and, simultaneously, binding component is peat. The peat mix is recommended to be compacted using stiff extrusion. Two methods are proposed to improve stiff extrusion of peat composite mixes. The first method is to make a jacket from disperse plastic peat as a surface layer of a briquette. The second method is to use heating equipment, in particular, a thermal snout which allows reducing friction between the formed mass and the internal surface of the equipment. Stiff extrusion agglomeration of peat mineral composite mixtures and induced oscillatory drying of wet briquettes allows production of high-quality smelt-and-fuel briquettes. Such technology of disperse material agglomeration is applicable to various metallurgy waste (dust, slag, etc.). The studies into properties of extrusion smelt-and-fuel briquettes including peat and disperse metalcontaining waste at a ratio from 1:3 to 1:7 by dry weight allowed drawing some conclusions. The composition density in blending varies within the ranges of 1370–1390 kg/m3, and their density after ex trusion ranges as 1836–2160 kg/m3. The porosity factor of the composite mix during extrusion drops by 1.5 times, which contributes to denser compaction of peat and aggregate and improves the structure of briquettes. Extrusion is carried out by two methods: making of a disperse peat jacket and using heating snouts with moulding equipment.

Ключевые слова Extrusion briquettes, composite mixtures, stiff extrusion, disperse peat, pressing, jacket, thermal snout
Библиографический список

1. Bizhanov А., Kurunov I. Extrusion briquettes is a new stage in raw materials agglomeration in iron and steel metallurgy. Moscow : ООО Metallurgizdat, 2017. 234 p.
2. Wang H., Chu M., Zhao W., Wang R., Liu Z. et al. Fundamental research on iron coke hot briquette – A new type burden used in blast furnace. Ironmaking & Steelmaking. 2016. Vol. 43, Iss. 8. pp. 571–580.
3. Bustan A., Arsyad M. Are Peat and Sawdust Truly Improve Quality of Briquettes as Fuel Alternative? Journal of Sustainable Development. 2017. Vol. 10, No. 5. pp. 61–70.
4. Kurunov I. F., Chizhikova V. M., Bizhanov A. M. Best Available Technology for Production of Agglomerate Raw Material for Blast Furnaces. Chernaya metallurgiya. Byulleten nauchnotekhnicheskoy i ekonomicheskoy informatsii. 2018. No. 4. pp. 62–66.
5. Hycnar J. J., Borowski G., Józefiak T. Conditions for The Preparation of Stable Ferrosilicon Dust Briquettes. Inżynieria Mineralna. 2014. Vol. 15, No. 1. pp. 155–162.
6. Huber-Kasberger H., Fleischanderl A., Hötzinger S. Briquetting of ferrous fines – saving resources, creating value. AISTech 2017 : Proceedings of the Iron and Steel Technology Conference and Exposition. Nashville, 2017. Vol. 1. pp. 973–978.
7. Ozerov S. S. Briquetting technologies for sulfide copper–nickel concentrate and silicate flux : Dissertation … of Candidate of Engineering Sciences. Saint-Petersburg, 2016. 223 p.
8. Dorofeev G. A., Barsukova E. Yu. About the Selection of the Rational Method of Pelletizing the Fine Fraction Materials of the Technology-Related and Natural Origins. Chernaya metallurgiya. Byulleten nauchno-tekhnicheskoy i ekonomicheskoy informatsii. 2015. No. 12. pp. 73–80.
9. Bizhanov A. M., Podgorodetskiy G. S. On the Movement of Briquetted Mass in Extruder. Exact Solutions. 1. Steel in Translation. 2020. Vol. 50, Iss. 1. pp. 1–5.
10. Nath S. K., Rajshekar Y., Alex T. C., Venugopalan T., Sanjay Kumar. Evaluation of the Suitability of Alternative Binder to Replace OPC for Iron Ore Slime Briquetting. Transactions of the Indian Institute of Metals. 2017. Vol. 70, Iss. 8. pp. 2165–2174.
11. DIFCO Pro 14 (Sod Peat Extruder). Difco, 2022. Available at: https://www.difcoequipment.com/difco-product-range/difco-pro-14-sod-peat-extruder/ (accessed: 12.04.2022).
12. Mikhaylov A. V., Bolshunov A. V., Kremcheev E. A., Epifantsev K. V. For raw materials for lump fuel production. GIAB. 2012. No. 4. pp. 59–63.
13. Fedorov A. S., Kazakov Yu. A., Fadeev D. V. Parameters of the screw press mouthpiece on the basis of requirements to the peat formed products. GIAB. 2020. No. 3. Special issue 9. Parameters of the screw press mouthpiece on the basis of requirements to the peat formed products. pp. 3–15.
14. Bogatov B. A., Kuptel G. A., Yakovets A. I., Senkevich V. I. Fuel briquettes manufactured from mixture of organogenous materials. Torfyanaya promyshlennost. 1989. No. 3. pp. 24–26.
15. Bizhanov A. M. Validation of production technology selection and analysis of metallurgical properties of briquettes toward their enhanced efficiency in extractive processes in the iron industry : Dissertation … of Candidate of Engineering Sciences. Moscow, 2016. 152 p.
16. Grevtsev N. V., Tyabotov I. A., Nazarychev N. A. Screw press. Patent SSSR, No.1779614. Applied: 21.03.1991. Published: 07.12.1992. Bulletin No. 45.
17. Terentev A. A. Structure formation control in peat system in domestic fuel production : thesis of Dissertation … of Doctor of Engineering Sciences. Minsk, 1989. 45 p.
18. Grevtsev N. V. Scientific framework for the composite peat materials technology : thesis of Dissertation … of Doctor of Engineering Sciences. Tver, 1998. 44 p.
19. Ranskiy O. B., Aleksandrov B. M., Grevtsev N. V. et al. Lump material drying unit. Patent RF, No. 2172908. Applied: 15.10.1999. Published: 27.08.2001.

Language of full-text русский
Полный текст статьи Получить