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10.3390/min13091115
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Article

Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit

by
Chao Ni
1,2,
Guangqian Xu
3,
Jing Chang
4 and
Bo Liu
5,*
1
Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining & Technology, Xuzhou 221116, China
2
School of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
3
Shandong Energy Xinwen Mining Group Co., Ltd., Tai’an 271000, China
4
College of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Yanta Middle Road No. 58 (Jin Saga It Mall), Xi’an 710054, China
5
Department of Mechanical and Power Engineering, East China University of Science and Technology, No. 130 Meilong Road, Lingyunlu Street, Xuhui District, Shanghai 200237, China
*
Author to whom correspondence should be addressed.
Minerals 2023, 13(9), 1115; https://doi.org/10.3390/min13091115
Submission received: 2 August 2023 / Revised: 17 August 2023 / Accepted: 21 August 2023 / Published: 24 August 2023
(This article belongs to the Section Mineral Processing and Extractive Metallurgy)
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Abstract

The separation of fine coal has been widely discussed in the coal preparation industry due to its high economic potential. Dense medium cyclone (DMC) is the most efficient equipment available for fine coal separation. However, the industrial application of DMC is far from satisfactory due to operational difficulties and maintenance. In this research, particle settling behavior in a dense medium cyclone was analyzed for improved separation. The calculation result about feed pressure and separation lower limit, which fits the experimental data well, might be a guidance for industrial DMC design and operation. According to the calculation result, it is highly recommended that the separation lower limit be set at 0.2 mm rather than 0.1 mm, because the feed pressure head required for the latter (50 D) is three times higher than the former (15 D).
Keywords: dense medium cyclone; fine coal; separation lower limit dense medium cyclone; fine coal; separation lower limit

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MDPI and ACS Style

Ni, C.; Xu, G.; Chang, J.; Liu, B. Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit. Minerals 2023, 13, 1115. https://doi.org/10.3390/min13091115

AMA Style

Ni C, Xu G, Chang J, Liu B. Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit. Minerals. 2023; 13(9):1115. https://doi.org/10.3390/min13091115

Chicago/Turabian Style

Ni, Chao, Guangqian Xu, Jing Chang, and Bo Liu. 2023. "Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit" Minerals 13, no. 9: 1115. https://doi.org/10.3390/min13091115

APA Style

Ni, C., Xu, G., Chang, J., & Liu, B. (2023). Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit. Minerals, 13(9), 1115. https://doi.org/10.3390/min13091115

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