IDEAS home Printed from https://ideas.repec.org/a/gam/jeners/v15y2022i19p6922-d921348.html
   My bibliography  Save this article

Development and Properties of a Similar Material to Coal

Author

Listed:
  • Keliang Zhan

    (College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710000, China)

  • Junhua Xue

    (College of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710000, China)

Abstract

In the mining process, protective-seam mining is one of the most effective measures to prevent and control coal and gas outburst accidents across the world. To accurately obtain the fracture development characteristics for protected coal in a similar physical simulation (to two-dimensional (2D) protective-seam mining), a novel and similar material to coal was developed. The similar material was prepared by mixing pulverized coal with a certain particle-size distribution and a water solution of sodium humate, which were separately taken as the aggregate and binder, followed by pressing and drying. Numerous orthogonal proportioning tests revealed that, under the molding pressure of 15 MPa, the unit weight and porosity of the similar material tended to be stable and approach that of raw coal. The similar material has a high compressive strength that is regulatable over a range as wide as 0.5~2.8 MPa and has an approximately linear direct proportional relation with the binder concentration. The adsorption and desorption tests revealed that the similar material features favorable adsorption properties, and its adsorption isotherm agrees with that of raw coal. The similar material is also characterized by a low price for its raw materials, no toxic or side effects, simple proportioning, stable properties, and the convenient regulation of various physical and mechanical parameters. Therefore, it can be used to simulate raw coal with different strengths.

Suggested Citation

  • Keliang Zhan & Junhua Xue, 2022. "Development and Properties of a Similar Material to Coal," Energies, MDPI, vol. 15(19), pages 1-10, September.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:6922-:d:921348
    as

    Download full text from publisher

    File URL: https://www.mdpi.com/1996-1073/15/19/6922/pdf
    Download Restriction: no
    File URL: https://www.mdpi.com/1996-1073/15/19/6922/
    Download Restriction: no
    ---><---

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:gam:jeners:v:15:y:2022:i:19:p:6922-:d:921348. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: MDPI Indexing Manager (email available below). General contact details of provider: https://www.mdpi.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.