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Studies on Separation of Macerals from Coal by Froth Flotation

Received: 19 July 2017     Accepted: 1 August 2017     Published: 17 August 2017
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Abstract

In the past coal maceral separation have been carried out based on density difference e. g., sink-float analysis, density gradient centrifugation (DGC) techniques etc. These approaches are of limited success. Froth flotation is a physico-chemical process separating particles on the basis of difference in surface properties in a vessel consisting of two distinct zones viz., pulp and froth zones. Rate of floatability of individual size range particles varies with their ash percent and the maceral content present. Therefore, the flotation rate constant eventually becomes a function of maceral percentage of a coal particle. In the present paper, an attempt has been made by performing size-wise flotation tests using a sub-bituminous rank coal and flotation kinetics have been established based on maceral percentage reporting to concentrate at different time intervals of flotation. These results have been related to the kinetic behaviour of the process.

Published in Journal of Energy and Natural Resources (Volume 6, Issue 3)
DOI 10.11648/j.jenr.20170603.12
Page(s) 38-44
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Coal Flotation, Flotation Kinetics, Macerals

References
[1] Jiménez, A., Iglesias, M. J., Laggoun-Défarge, F., & Suarez-Ruiz, I. (1998). Study of physical and chemical properties of vitrinites. Inferences on depositional and coalification controls. Chemical Geology, 150(3), 197-221.
[2] Yerriswamy, P., Modi, O. P., Rao, K. K., & Rao, T. C. (2000). Characterization of Macerals in Coal Fines using Image Analysis Technique.
[3] Honaker, R. Q., Mohanty, M. K., & Crelling, J. C. (1996). Coal maceral separation using column flotation. Minerals Engineering, 9(4), 449-464.
[4] Sarkar, G. G., Ghose, S., Chaudhuri, S. G., Sakha, S., & Daschowdhury, K. P. (1984). Selectivity of coal macerals during flotation and oil agglomeration: a case study. Coal Perparation, 1(1), 39-52.
[5] Shu, X., Wang, Z., & Xu, J. (2002). Separation and preparation of macerals in Shenfu coals by flotation. Fuel, 81(4), 495-501.
[6] Tempelmeyer, K. E., Crelling, J., Hippo, E., Paul, B., & Yen, M. (1991). Coal refining by maceral liberation and separation. In annual international pittsburgh coal conference (pp. 329-336). University of pittsburgh school of engineering centre for energy.
[7] Crelling, J. C. (1989). Separation and characterization of coal macerals: accomplishments and future possibilities. Prepr. Pap., Am. Chem. Soc., Div. Fuel Chem.; (United States), 34 (CONF-8904170-).
[8] Dyrkacz, Gary R., Carol AA Bloomquist, and Ljiljana Ruscic. "Chemical variations in coal macerals separated by density gradient centrifugation." Fuel 63, no. 8 (1984): 1166-1173.
[9] Jorjani, E., Esmaeili, S., & Khorami, M. T. (2013). The effect of particle size on coal maceral group’s separation using flotation. Fuel, 114, 10-15.
[10] Laskowski, J. S. (2001). Fine-coal utilization. Developments in Mineral Processing, 14, 307-351.
[11] Arnold, B. J., & Aplan, F. F. (1989). The hydrophobicity of coal macerals. Fuel, 68(5), 651-658.
[12] Sahoo, S. K., Suresh, N., & Varma, A. K. (2017). Kinetic studies on petrographic components of coal in batch flotation operation. International Journal of Coal Preparation and Utilization, 1-22.
[13] Hower, J. C., Kuehn, K. W., Parekh, B. K., & Peters, W. J. (2000). Maceral and microlithotype beneficiation in column flotation at the powell mountain coal mayflower preparation plant, Lee County, Virginia. Fuel processing technology, 67(1), 23-33.
[14] Shu, X., Wang, Z., & Xu, J. (2002). Separation and preparation of macerals in Shenfu coals by flotation. Fuel, 81(4), 495-501.
[15] Honaker, R. Q., Mohanty, M. K., & Crelling, J. C. (1996). Coal maceral separation using column flotation. Minerals engineering, 9(4), 449-464.
[16] Jorjani, E., Hower, J. C., Chelgani, S. C., Shirazi, M. A., & Mesroghli, S. (2008). Studies of relationship between petrography and elemental analysis with grindability for Kentucky coals. Fuel, 87(6), 707-713.
[17] Taylor, G. H., Teichmüller, M., Davis, A. C. F. K., Diessel, C. F. K., Littke, R., & Robert, P. (1998). Organic petrology.
[18] ICCP, I. (2001). Handbook Coal Petr. suppl. to 2nd ed. ICCP. 1998. The new vitrinite classification (ICCP System 1994). Fuel, 77, 349-358.
[19] For Coal, I. C. (1998). The new vitrinite classification (ICCP System 1994). Fuel, 77(5), 349-358.
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  • APA Style

    Saroj Kumar Sahoo, Nikkam Suresh, Atul Kumar Varma. (2017). Studies on Separation of Macerals from Coal by Froth Flotation. Journal of Energy and Natural Resources, 6(3), 38-44. https://doi.org/10.11648/j.jenr.20170603.12

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    ACS Style

    Saroj Kumar Sahoo; Nikkam Suresh; Atul Kumar Varma. Studies on Separation of Macerals from Coal by Froth Flotation. J. Energy Nat. Resour. 2017, 6(3), 38-44. doi: 10.11648/j.jenr.20170603.12

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    AMA Style

    Saroj Kumar Sahoo, Nikkam Suresh, Atul Kumar Varma. Studies on Separation of Macerals from Coal by Froth Flotation. J Energy Nat Resour. 2017;6(3):38-44. doi: 10.11648/j.jenr.20170603.12

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  • @article{10.11648/j.jenr.20170603.12,
      author = {Saroj Kumar Sahoo and Nikkam Suresh and Atul Kumar Varma},
      title = {Studies on Separation of Macerals from Coal by Froth Flotation},
      journal = {Journal of Energy and Natural Resources},
      volume = {6},
      number = {3},
      pages = {38-44},
      doi = {10.11648/j.jenr.20170603.12},
      url = {https://doi.org/10.11648/j.jenr.20170603.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.jenr.20170603.12},
      abstract = {In the past coal maceral separation have been carried out based on density difference e. g., sink-float analysis, density gradient centrifugation (DGC) techniques etc. These approaches are of limited success. Froth flotation is a physico-chemical process separating particles on the basis of difference in surface properties in a vessel consisting of two distinct zones viz., pulp and froth zones. Rate of floatability of individual size range particles varies with their ash percent and the maceral content present. Therefore, the flotation rate constant eventually becomes a function of maceral percentage of a coal particle. In the present paper, an attempt has been made by performing size-wise flotation tests using a sub-bituminous rank coal and flotation kinetics have been established based on maceral percentage reporting to concentrate at different time intervals of flotation. These results have been related to the kinetic behaviour of the process.},
     year = {2017}
    }
    

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    T1  - Studies on Separation of Macerals from Coal by Froth Flotation
    AU  - Saroj Kumar Sahoo
    AU  - Nikkam Suresh
    AU  - Atul Kumar Varma
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    DO  - 10.11648/j.jenr.20170603.12
    T2  - Journal of Energy and Natural Resources
    JF  - Journal of Energy and Natural Resources
    JO  - Journal of Energy and Natural Resources
    SP  - 38
    EP  - 44
    PB  - Science Publishing Group
    SN  - 2330-7404
    UR  - https://doi.org/10.11648/j.jenr.20170603.12
    AB  - In the past coal maceral separation have been carried out based on density difference e. g., sink-float analysis, density gradient centrifugation (DGC) techniques etc. These approaches are of limited success. Froth flotation is a physico-chemical process separating particles on the basis of difference in surface properties in a vessel consisting of two distinct zones viz., pulp and froth zones. Rate of floatability of individual size range particles varies with their ash percent and the maceral content present. Therefore, the flotation rate constant eventually becomes a function of maceral percentage of a coal particle. In the present paper, an attempt has been made by performing size-wise flotation tests using a sub-bituminous rank coal and flotation kinetics have been established based on maceral percentage reporting to concentrate at different time intervals of flotation. These results have been related to the kinetic behaviour of the process.
    VL  - 6
    IS  - 3
    ER  - 

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Author Information
  • Department of Fuel and Mineral Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, India

  • Department of Fuel and Mineral Engineering, Indian Institute of Technology (Indian School of Mines), Dhanbad, India

  • Department of Applied Geology, Indian Institute of Technology (Indian School of Mines), Dhanbad, India

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