Journals →  Gornyi Zhurnal →  2021 →  #7 →  Back

ArticleName Improvement of dissociation efficiency of limestone fines using vibration pneumoseparation
DOI 10.17580/gzh.2021.07.12
ArticleAuthor Bardovsky A. D., Gerasimova A. A., Sutupov P. V.

NUST MISIS, Moscow, Russia:

A. D. Bardovsky, Professor, Doctor of Engineering Sciences,
A. A. Gerasimova, Associate Professor, Candidate of Engineering Sciences,
P. V. Sutupov, Student


This paper presents the results of research into dissociation of minerals on a vibro-pneumatic separator composed of a series of cascade sections through which the classified material passes. Formation of the two-phase air flow in the working space of the separator is examined, and the causes of settling of small particles on the walls of the separator housing are analyzed. From the theoretical findings and experimental proof, dissociation efficiency of fines increases exponentially with growing frequency and amplitude of vibration effect on the body of the pneumatic separator. With the increasing amplitude and frequency of vibrations of the separator housing walls, the speed of particle settling on the walls decreases, which enhances the separation efficiency. The greatest effect is achieved when the vibrator is mounted on the front wall of the separator. This can be explained by turbulization of gas flow in the wall area due to the vibration effect exerted on it by the front wall. Vibration of the walls of the pneumatic separator leads to leveling of concentration of particles along the channel section and, consequently, to reduction in the number of fine particles settled. It is established that the maximum efficiency of separation of limestone waste from the Khomyakovsky Deposit by the boundary size of 1 mm is achieved with the following combinations of vibration parameters of the separator body: vibration amplitude A = 2.5 mm; vibration frequency ω = 250 s–1.

keywords Mineral raw materials, pneumatic separator, turbulent pulsations, fine particles, separator body, amplitude, vibration frequency, separation efficiency

1. Federal Target Program : Waste. Approved by the Government of the Russian Federation, Resolution No. 1098 as of Sep 13, 1996 as amended Dec 30, 2000). Available at: (accessed: 15.03.2021).
2. Bardovsky A. D., Gerasimova A. A., Bibikov P. Ya. Principles of improvement of milling equipment. Gornyi Zhurnal. 2020. No. 3. pp. 56–59. DOI: 10.17580/gzh.2020.03.10
3. Kokunko V. V. Generation and expansion of new supply base for the construction material production using associate rocks and waste of the mining industries. Stroitelnye materialy. 1994. No. 4. pp. 4–6.
4. Stepanenko A. A., Stepanenko A. I. Knowledge on pneumatic separation of metallic and nonmetallic materials by SEPAIR technology. Proceedings of XII Congress of Dressers from the CIS Countries. Moscow : ITEP, 2019. pp. 247–253.
5. Basyrov I. I., Bardovskiy A. D. Innovative crushing technique and vertical roll crusher design. GIAB. 2020. No. 2. pp. 121–129.
6. Ponomarev V. B. Dry processing of rock breaking waste. Gornyi Zhurnal. 2015. No. 12. pp. 50–52. DOI: 10.17580/gzh.2015.12.11
7. Xianlin Zhou, Deqing Zhu, Jian Pan, Yanhong Luo, Xinqi Liu. Upgrading of High-Aluminum Hematite-Limonite Ore by High Temperature Reduction-Wet Magnetic Separation Process. Metals. 2016. Vol. 6, Iss. 3. 57. DOI: 10.3390/met6030057
8. Gongmin Li, Xiaodong Yu, Zhifu Cui. The Application and Research on Before-Furnace Coal Desulfurization by ZM Dry Separator in Guizhzou Tongzi Power Plant. Proceedings of the XVIII International Coal Preparation Congress. Cham : Springer International Publishing, 2016. Vol. 1. pp. 1113–1118.
9. Barskiy M. D., Levchenko L. A. Capacities of pneumatic separation of granular materials. Moscow : Nedra, 1974. 231 p.
10. Filippov V. A. Technology of drying and thermo-aero-classification of coal. Moscow : Nedra, 1987. 286 p.
11. Mednikov E. P. Turbulence-based transfer and settling of aerosols. Moscow : Nauka, 1981. 174 p.
12. Bardovskiy A. D., Gerasimova A. A., Keropyan A. M., Bibikov P. Ya. Influence of the mechanical characteristics of harp screen material on screening process. Steel in Translation. 2018. Vol. 61, No. 9. pp. 678–682.
13. Barskiy M. D. Fractionation of powders. Moscow : Nedra, 1980. 327 p.
14. Muktaganov Kh. Kh. Determination and analysis of rational parameters of an air separator with flash layer for classification of engineering material quarrying waste : Dissertation … of Candidate of Engineering Sciences. Moscow, 1981. 142 p.
15. Akbari H., Ackah L. A., Mohanty M. K. Development of a new fine particle dry separator. Minerals & Metallurgical Processing. 2018. Vol. 35, No. 2. pp. 77–86.
16. Buevich Yu. A., Kagan I. B., Lisin F. N. Distribution of suspended particles in a turbulent flow. Journal of Engineering Physics. 1989. Vol. 57, Iss. 4. pp. 1140–1147.
17. Fuks N. A. Mechanics of aerosols. Moscow : Publishing House of USSR Academy of Sciences, 1955. 352 p.
18. Goncharov Yu. A. Justification of basic parameter of vibration pneumoseparator for classification of waste from limestone quarries : Dissertation … of Candidate of Engineering Sciences. Moscow, 1992. 176 p.
19. Gorbatyuk S., Kondratenko V., Sedykh L. Influence of critical speed when working shafts with symmetrically located monolithic weighting on the accuracy of work surfaces. Materials Today: Proceedings. 2019. Vol. 19. pp. 2361–2364.
20. Naumova M., Basyrov I., Aliev K. Reengineering of the ore preparation production process in the context of Almalyk MMC JSC. International Conference on Modern Trends in Manufacturing Technologies and Equipment. 2018. MATEC Web of Conferences. 2018. Vol. 224. 01030. DOI: 10.1051/matecconf/201822401030
21. Li Minghui, Li Zhiyong, Xu Sheng, Yao Kaixuan. Development Trend of China’s Coal Preparation Industry in Critical Process and Equipment. Proceedings of XVIII International Coal Preparation Congress. Cham : Springer International Publishing. 2016. Vol. 1. pp. 175–180.
22. Stepanenko A. I., Stepanenko A. A., Milshin O. N., Ordon S. F., Panov A. V., Pivovarov A. N. Processing of low-grade bauxites by air separation. Non-ferrous Metals and Minerals : Book of papers of the X International congress. Krasnoyarsk : Nauchno-innovatsionnyi tsentr, 2018. pp. 48–54.
23. Arsentev V. A., Vaisberg L. A., Ustinov I. D., Gerasimov A. M. Prospects of water use reduction in coal preparation. Gornyi Zhurnal. 2016. No. 5. pp. 97–101. DOI: 10.17580/gzh.2016.05.15

Language of full-text russian
Full content Buy