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Testing of fine classification sifter in the processing and disposal of mining waste

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Category: Content №2 2025

Last Updated on 26 April 2025

Published on 30 November -0001

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Authors:

O.Vasylchuk*, orcid.org/0000-0002-5467-3222, National University of Water and Environmental Engineering, Rivne, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

D.Lozin, orcid.org/0009-0006-0139-3944, Scientific and Manufacturing Company “PRODECOLOGIA”, Rivne, Ukraine

V.Zaiets, orcid.org/0000-0003-0659-7402, National University of Water and Environmental Engineering, Rivne, Ukraine

M.Kucheruk, orcid.org/0000-0002-0443-9139, National University of Water and Environmental Engineering, Rivne, Ukraine

V.Korniienko, orcid.org/0009-0007-5226-4752, University of Comenius, Bratislava, Slovak Republic

* Corresponding author e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

повний текст / full article

Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2025, (2): 096 - 105

https://doi.org/10.33271/nvngu/2025-2/096

Abstract:

Purpose. To study the efficiency of fine classification in the processes of enrichment and disposal of industrial waste and to implement modern equipment for improving material separation efficiency in mining industry.

Methodology. Experimental research was conducted at industrial facilities in Ukraine, specifically at the laboratories of Chervonohradska CEF (Lviv region), PJSC “Rafalivskyi Quarry,” and LLC “KKNK TECHNOBUD” (Rivne region). The experiments utilized a sieve with direct excitation operating in intensive vibration mode. The classification efficiency of materials of different fractions was studied under dry, wet, and pulp conditions. The integration of fine classification with auxiliary equipment, such as hydrocyclones and magnetic separators, was explored to simulate complete industrial circuits, providing insights into the potential for scaling these technologies to industrial applications.

Findings. The research showed that fine classification using a sieve with direct excitation achieved a separation efficiency of over 90 %. For particles larger than 100 µm, an efficiency of 75–85 % was achieved, while particles in the +40–100 m range reached 65–70 %. The final moisture content of the materials amounted to 18 % on an absolute scale. The developed technologies can be integrated into enrichment schemes for the second magnetic separation stage and other processes.

Originality. For the first time, the efficiency of fine classification using a sieve with direct excitation in waste enrichment processes of the mining industry has been theoretically substantiated and experimentally confirmed. Optimal vibration mode parameters have been established to ensure high separation efficiency for particles up to 50 m. The application of the technology in closed grinding circuits and before magnetic separation has been proposed.

Practical value. A fine classification technology using a direct excitation vibration mode has been developed and tested, providing a high fine fraction material separation level. The proposed technology enhances the efficiency of processing mining waste, ensuring more rational resource utilization by reducing waste volumes.

Keywords: fine classification, sieve with direct excitation, industrial waste, magnetic separation, vibration modes

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