Skip to main content
SpringerLink
Log in

Using HyperCoal to prepare metallurgical coal briquettes via hot-pressing

  • Published:
International Journal of Minerals, Metallurgy, and Materials Aims and scope Submit manuscript

Abstract

HyperCoal was prepared from low-rank coal via high-temperature solvent extraction with N-methylpyrrolidone as an extraction solvent and a liquid-to-solid ratio of 50 mL/g in a high-temperature and high-pressure reactor. When HyperCoal was used as a binder and pulverized coal was used as the raw material, the compressive strength of the hot-pressed briquettes (each with a diameter of 20 mm and mass of 5 g) under different conditions was studied using a hot-pressing mold and a high-temperature furnace. The compressive strength of the hot-pressed briquettes was substantially improved and reached 436 N when the holding time period was 15 min, the hot-pressing temperature was 673 K, and the HyperCoal content, was 15wt%. Changes in the carbonaceous structure, as reflected by the intensity ratio between the Raman G- and D-bands (IG/ID), strongly affected the compressive strength of hot-pressed briquettes prepared at different hot-pressing temperatures. Compared with cold-pressed briquettes, hot-pressed briquettes have many advantages, including high compressive strength, low ash content, high moisture resistance, and good thermal stability; thus, we expect that hot-pressed briquettes will have broad application prospects.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. C. Xu, G. Xu, S.F. Zhao, L.Y. Zhou, Y.P. Yang, and D.K. Zhang, An improved configuration of lignite pre-drying using a supplementary steam cycle in a lignite fired supercritical power plant, Appl. Energy, 160(2015), p. 882.

    Article  Google Scholar 

  2. W.C. Xia, G.Y. Xie, and Y.L. Peng, Recent advances in beneficiation for low rank coals, Powder Technol., 277(2015), p. 206.

    Article  Google Scholar 

  3. H. Katalambula and R. Gupta, Low-grade coals: A review of some prospective upgrading technologies, Energy Fuels, 23(2009), No. 7, p. 3392.

    Article  Google Scholar 

  4. F.J. Liu, X.Y. Wei, M.H. Fan, and Z.M. Zong, Separation and structural characterization of the value-added chemicals from mild degradation of lignites: A review, Appl. Energy, 170(2016), p. 415.

    Article  Google Scholar 

  5. I.S. Gwak, Y.R. Gwak, Y.B. Kim, and S.H. Lee, Drying characteristics of low rank coals in a pressurized flash drying system, J. Ind. Eng. Chem., 57(2018), p. 154.

    Article  Google Scholar 

  6. X. Li, Z. Zhang, L. Zhang, X.Q. Zhu, Z.Z. Hu, W.X. Qian, R. Ashida, K. Miura, H.Y. Hu, G.Q Luo, and H. Yao, Degradative solvent extraction of low-rank coals by the mixture of low molecular weight extract and solvent as recycled solvent, Fuel Process. Technol., 173(2018), p. 48.

    Article  Google Scholar 

  7. J.N. Yin, F.T. Zhang, L.H. Fan, Y.H. Liang, and L. Wang, Research progress of organic solvent extraction of low rank coal, Clean Coal Technol., 20(2014), No. 6, p. 100.

    Google Scholar 

  8. W.J. He, Z.Y. Liu, Q.Y. Liu, L. Shi, X.G. Shi, J.F. Wu, and X.J. Guo, Behavior of radicals during solvent extraction of three low rank bituminous coals, Fuel Process. Technol., 156(2017), p. 221.

    Article  Google Scholar 

  9. N. Okuyama, N. Komatsu, T. Shigehisa, T. Kaneko, and S. Tsuruya, Hyper-coal process to produce the ash-free coal, Fuel Process. Technol., 85(2004). No. 8–10, p. 947.

    Article  Google Scholar 

  10. L.F. Hao, P. Feng, W.L. Song, W.G. Lin, S.H. Yoon, and I. Mochida, Modification performance of Hypercoal as an additive on co-carbonization of coal, J. Fuel Chem. Technol., 40(2012), No. 9, p. 1025.

    Article  Google Scholar 

  11. T. Takanohashi, T. Shishido, H. Kawashima, and I. Saito, Characterisation of HyperCoals from coals of various ranks, Fuel, 87(2008), No. 4–5, p. 592.

    Article  Google Scholar 

  12. M. Dudeka, P. Tomczyk, R. Socha, and M. Hamaguchi, Use of ash-free “Hyper-coal” as a fuel for a direct carbon fuel cell with solid oxide electrolyte, Int. J. Hydrogen Energy, 39(2014), No. 23, p. 12386.

    Article  Google Scholar 

  13. A. Sharma, T. Takanohashi, K. Morishita, T. Takarada, and I. Saito, Low temperature catalytic steam gasification of HyperCoal to produce H2 and synthesis gas, Fuel, 87(2008), No. 4–5, p. 491.

    Article  Google Scholar 

  14. L. Wang, Preparation and Application of Hyper-coals Based on the Weak Coking Coal [Dissertation], Hebei United University, Tangshan, 2014, p. 35.

    Google Scholar 

  15. X.Y. Zhao, S.S. Huang, J.P. Cao, X.Y. Wei, K. Magarisawa, and T. Takarada, HyperCoal-derived porous carbons with alkaline hydroxides and carbonate activation for electric double-layer capacitor, Fuel Process. Technol., 125(2014), p. 251.

    Article  Google Scholar 

  16. J.X. Yang, K. Nakabayashi, J. Miyawaki, and S.H. Yoon, Preparation of pitch based carbon fibers using Hyper-coal as a raw material, Carbon, 106(2016), p. 28.

    Article  Google Scholar 

  17. J.X. Yang, K. Nakabayashi, J. Miyawaki, and S.H. Yoon, Preparation of isotropic pitch-based carbon fiber using hyper coal through co-carbonation with ethylene bottom oil, J. Ind. Eng. Chem., 34(2016), p. 397.

    Article  Google Scholar 

  18. Q. Zhong, Y.B. Yang, Q. Li, B. Xu, and T. Jiang, Coal tar pitch and molasses blended binder for production of formed coal briquettes from high volatile coal, Fuel Process. Technol., 157(2017), p. 12.

    Article  Google Scholar 

  19. S. Nomura, M. Mahoney, K. Fukuda, K. Kato, A.L. Bas, and S. McGuire, The mechanism of coking pressure generation I: Effect of high volatile matter coking coal, semi-anthracite and coke breeze on coking pressure and plastic coal layer permeability, Fuel, 89(2010), No. 7, p. 1549.

    Article  Google Scholar 

  20. M. Mahoney, S. Nomura, K. Fukuda, K. Kato, A.L. Bas, D.R. Jenkins, and S. McGuire, The mechanism of coking pressure generation II: Effect of high volatile matter coking coal, semi anthracite and coke breeze on coking pressure and contraction, Fuel, 89(2010), No. 7, p. 1557.

    Article  Google Scholar 

  21. V. Zubkova, A. Strojwas, M. Strojanowska, and J. Kowalczyk, The influence of composition of coal briquettes on changes in volume of the heated coal charge, Fuel Process. Technol., 128(2014), p. 265.

    Article  Google Scholar 

  22. Y.L. Guo, W.R. Xu, J.M. Zhu, and J.Y. Zhang, The burden structure and its consumption in the melter gasifier of the Corex process, Metall. Mater. Trans. B, 44(2013), No. 5, p. 1078.

    Article  Google Scholar 

  23. T.H. Sun, Y.F. Shen, and J.P. Jia, Gas cleaning and hydrogen sulfide removal for COREX coal gas by sorption enhanced catalytic oxidation over recyclable activated carbon desulfurizer, Environ. Sci. Technol., 48(2014), No. 4, p. 2263.

    Article  Google Scholar 

  24. S.F. Zhang, F. Zhu, C.G. Bai, L.Y. Wen, and C. Zou, Thermal behavior and kinetics of the pyrolysis of the coal used in the COREX process, J. Anal. Appl. Pyrolysis, 104(2013), p. 660.

    Article  Google Scholar 

  25. H.F. Shui, H.P. Li, H.T Chang, Z.C. Wang, Z. Gao, Z.P. Lei, and S.B. Ren, Modification of sub-bituminous coal by steam treatment: Caking and coking properties, Fuel Process. Technol., 92(2011), No. 12, p. 2299.

    Article  Google Scholar 

  26. A. Leemann, Raman microscopy of alkali-silica reaction (ASR) products formed in concrete, Cem. Concr. Res., 102(2017), p. 41.

    Article  Google Scholar 

  27. M. Souibgui, H. Ajlani, A. Cavanna, M. Oueslati, A. Meftah, and A. Madouri, Raman study of annealed two-dimensional heterostructure of graphene on hexagonal boron nitride, Superlattices Microstruct., 112(2017), p. 394.

    Article  Google Scholar 

  28. F. Gao, L.Z. Xu, Y.J. Zhang, Z.L. Yang, L.J. Han, and X. Liu, Analytical Raman spectroscopic study for discriminant analysis of different animal-derived feedstuff: Understanding the high correlation between Raman spectroscopy and lipid characteristics, Food Chem., 240(2018), p. 989.

    Article  Google Scholar 

  29. X.B. Su, Q. Si, and J.X. Song, Characteristics of coal Raman spectrum, J. China Coal Soc., 41(2016), No. 5, p. 1197.

    Google Scholar 

  30. M.J. Wang, D.G. Roberts, M.A. Kochanek, D.J. Harris, L.P. Chang, and C.Z. Li, Raman spectroscopic investigations into links between intrinsic reactivity and char chemical structure, Energy Fuels, 28(2014), No. 1, p. 285.

    Article  Google Scholar 

  31. H. Liu, Z.X. Feng, and F.R. Bi, Technology of coal briquetting for COREX and its application in China, Res. Iron Steel, 41(2013), No. 4, p. 51.

    Google Scholar 

Download references

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (No. 51574023) and the National Key Research and Development Program of China (No. 2016YFB0600701).

Author information

Authors and Affiliations

  1. State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China

    Ya-jie Wang, Hai-bin Zuo, Jun Zhao & Wan-long Zhang

Authors
  1. Ya-jie Wang
    View author publications

    You can also search for this author in PubMed Google Scholar

  2. Hai-bin Zuo
    View author publications

    You can also search for this author in PubMed Google Scholar

  3. Jun Zhao
    View author publications

    You can also search for this author in PubMed Google Scholar

  4. Wan-long Zhang
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Hai-bin Zuo.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Wang, Yj., Zuo, Hb., Zhao, J. et al. Using HyperCoal to prepare metallurgical coal briquettes via hot-pressing. Int J Miner Metall Mater 26, 547–554 (2019). https://doi.org/10.1007/s12613-019-1763-3

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12613-019-1763-3

Keywords

Search

Navigation