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

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 operati...

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Main Authors: Chao Ni, Guangqian Xu, Jing Chang, Bo Liu
Format: Article
Language:English
Published: MDPI AG 2023-08-01
Series:Minerals
Subjects:
Online Access:https://www.mdpi.com/2075-163X/13/9/1115
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author Chao Ni
Guangqian Xu
Jing Chang
Bo Liu
author_facet Chao Ni
Guangqian Xu
Jing Chang
Bo Liu
author_sort Chao Ni
collection DOAJ
description 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).
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spelling doaj.art-4aa6ddd35f3d414183ef0aa699a060632023-11-19T12:04:33ZengMDPI AGMinerals2075-163X2023-08-01139111510.3390/min13091115Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower LimitChao Ni0Guangqian Xu1Jing Chang2Bo Liu3Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining & Technology, Xuzhou 221116, ChinaShandong Energy Xinwen Mining Group Co., Ltd., Tai’an 271000, ChinaCollege of Chemistry and Chemical Engineering, Xi’an University of Science and Technology, Yanta Middle Road No. 58 (Jin Saga It Mall), Xi’an 710054, ChinaDepartment of Mechanical and Power Engineering, East China University of Science and Technology, No. 130 Meilong Road, Lingyunlu Street, Xuhui District, Shanghai 200237, ChinaThe 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).https://www.mdpi.com/2075-163X/13/9/1115dense medium cyclonefine coalseparation lower limit
spellingShingle Chao Ni
Guangqian Xu
Jing Chang
Bo Liu
Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit
Minerals
dense medium cyclone
fine coal
separation lower limit
title Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit
title_full Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit
title_fullStr Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit
title_full_unstemmed Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit
title_short Dense Medium Cyclone Separation of Fine Coal: A Discussion on the Separation Lower Limit
title_sort dense medium cyclone separation of fine coal a discussion on the separation lower limit
topic dense medium cyclone
fine coal
separation lower limit
url https://www.mdpi.com/2075-163X/13/9/1115
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AT guangqianxu densemediumcycloneseparationoffinecoaladiscussionontheseparationlowerlimit
AT jingchang densemediumcycloneseparationoffinecoaladiscussionontheseparationlowerlimit
AT boliu densemediumcycloneseparationoffinecoaladiscussionontheseparationlowerlimit