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Occurrence of Iron in the Minerals of Carboniferous Coal Gangue of the Pingshuo Open-pit Mine, North China

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Clays and Clay Minerals

Abstract

The state of iron in coal gangue minerals is an important factor in determining the potential for value-added utilization of this solid waste; this is especially true for the coal gangue coming from the Pingshuo open-pit mine in China. The objective of the present study was to characterize the petrological, mineralogical, and chemical states of Fe in the coal gangue from the Carboniferous Taiyuan Formation. Methods used included polarizing microscopy, X-ray diffraction (XRD), scanning electron microscopy–energy-dispersive spectroscopy (SEM–EDS), X-ray fluorescence, micro-Fourier-transform infrared (micro-FTIR) spectroscopy, and Mössbauer spectroscopy. The coal gangues are mudstones, silty mudstones, and pelitic siltstones, which are composed primarily of kaolinite, quartz, feldspar, pyrite, illite, and magnesite. In coal gangue, the Fe was found to occur in ferruginous minerals, in crystal-lattice substitutions, or in a colloidal state. The ferruginous minerals in the coal gangue are pyrite and marcasite, and the pyrite morphologies are framboidal, euhedral octahedral crystals, subhedral granular crystals, and irregular crystals. The results of SEM–EDS and micro-FTIR confirmed that the lattice substitution of Fe in the coal gangue minerals occurred mainly in kaolinite, resulting in two types of kaolinite: iron-containing and iron-free kaolinite. The former may be transformed from volcanic biotite and the latter from volcanic feldspar. The Mössbauer spectra of kaolinite showed intense doublets with isomer shift and quadrupole splitting values consistent with tetrahedrally coordinated Fe3+ and ocahedrally coordinated Fe2+, suggesting the presence of two types of substitution sites: (1) Fe2+ replacing Al3+ in the octahedral sheet; and (2) Fe3+ replacing Si4+ in the tetrahedral sheet. This study has important theoretical significance for the high-value utilization of coal gangue.

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References

  • Ambikadevi, V. R., & Lalithambika, M. (2000). Effect of organic acids on ferric iron removal from iron-stained kaolinite. Applied Clay Science, 16(3–4), 133–145.

    Article  Google Scholar 

  • Bertolino, L. C., Rossi, A. M., Scorzelli, R. B., & Torem, M. L. (2010). Influence of iron on kaolin whiteness: An electron paramagnetic resonance study. Applied Clay Science, 49, 170–175.

    Article  Google Scholar 

  • Brindley, G. W. (1980). Quantitative X-ray analysis of clays. In G. W. Brindley & G. Brown (Eds.), Crystal structures of clay minerals and their X-ray identification (pp. 411–438). Mineralogical Society.

    Chapter  Google Scholar 

  • Cao, Y., Ma, B., & Fu, G. (2021a). Research progress of high value utilization of coal gangue. Refractories & Lime, 46, 35–39.

    Google Scholar 

  • Cao, Z., Jia, Y., Wang, Q., & Cheng, H. (2021b). High-efficiency photo-fenton Fe/g-C3N4/kaolinite catalyst for tetracycline hydrochloride degradation. Applied Clay Science, 212, 106213.

    Article  Google Scholar 

  • Chen, J., Min, F., Liu, L., & Cai, C. (2020). Systematic exploration of the interactions between Fe-doped kaolinite and coal based on DFT calculations. Fuel, 266, 117082.

    Article  Google Scholar 

  • Cheng, H., Liu, Q., Huang, M., Zhang, S., & Frost, R. L. (2013). Application of TG-FTIR to study SO2 evolved during the thermal decomposition of coal-derived pyrite. Thermochimica Acta, 555, 1–6.

    Article  Google Scholar 

  • Dai, S., Ren, D., Tang, Y., Shao, L., & Li, S. (2002). Distribution, isotopic variation and origin of sulfur in coals in the Wuda coalfield, Inner Mongolia, China. International Journal of Coal Geology, 51, 237–250.

    Article  Google Scholar 

  • Dai, S., Hou, X., Ren, D., & Tang, Y. (2003). Surface analysis of pyrite in the no. 9 coal seam, Wuda coalfield, Inner Mongolia, China, using high-resolution time-of-flight secondary ion mass-spectrometry. International Journal of Coal Geology, 55, 139–150.

    Article  Google Scholar 

  • Devic, G., Pfendt, P., Jovancicevic, B., & Popovic, Z. (2010). Pyrite formation in organic-rich clay, calcitic and coal-forming environments. Acta Geologica Sinica, 80, 574–588.

    Article  Google Scholar 

  • Frankie, K., & Hower, J. (1987). Variation in pyrite size, form, and microlithotype association in the springfield (no. 9) and herrin (no. 11) coals, Western Kentucky. International Journal of Coal Geology, 7, 349–364.

    Article  Google Scholar 

  • Fysh, S. A., Cashion, J. D., & Clark, P. E. (1983). Mössbauer effect studies of iron in kaolin. II. Surface iron. Clays and Clay Minerals, 31, 293–298.

    Article  Google Scholar 

  • Gonzalez, J. A., & Ruiz, M. (2006). Bleaching of kaolins and clays by chlorination of iron and titanium. Applied Clay Science, 33, 219–229.

    Article  Google Scholar 

  • Häusler, W. (2004). Firing of clays studied by X-ray diffraction and Mössbauer spectroscopy. Hyperfine Interactions, 154, 121–141.

  • Hosseini, M. R., & Ahmadi, A. (2015). Biological beneficiation of kaolin: A review on iron removal. Applied Clay Science, 107, 238–245.

    Article  Google Scholar 

  • Kortenski, J., & Kostova, I. (1996). Occurrence and morphology of pyrite in Bulgarian coals. International Journal of Coal Geology, 29, 273–290.

    Article  Google Scholar 

  • Kramer, M. J., Mendelev, M. I., & Napolitano, R. E. (2010). In situ observation of antisite defect formation during crystal growth. Physical Review Letters, 105, 245501.

    Article  Google Scholar 

  • Li, J., & Wang, J. (2019). Comprehensive utilization and environmental risks of coal gangue: A review. Journal of Cleaner Production, 239.

  • Liu, D., Yang, Q., Zhou, C., Tang, D., & Kang, X. (1998). Occurrence and geological genesis of pyrites in Late Paleozoic coals in North China. Chinese Journal of Geochemistry, 28, 340–350.

    Google Scholar 

  • Liu, Q., Li, X., & Cheng, H. (2016). Insight into the self-adaptive deformation of kaolinite layers into nanoscrolls. Applied Clay Science, 124–125, 175–182.

    Article  Google Scholar 

  • Liu, Y., Yu, L., & Wang, H. (2013). Study on countermeasures of coal gangue pollution prevention and regional sustainable development in China. In Applied Mechanics and Materials (Vol. 307, pp. 510–513). Trans Tech Publications, Ltd.

  • Lu, Y., Li, J., & Liu, Q. (2015). Effect of grain size and crystallinity of kaolinite from coal on kaolinite intercalation. Acta Mineralogica Sinica, 35, 209–213.

    Google Scholar 

  • Meng, F., Yu, J., Tahmasebi, A., & Han, Y. (2013). Pyrolysis and combustion behavior of coal gangue in O2/CO2 and O2/N2 mixtures using TGA and drop tube furnace. Energy & Fuels, 27, 2923–2932.

    Article  Google Scholar 

  • Moore, D. M., & Reynolds, R. C., Jr. (1989). X-ray diffraction and the Identification and Analysis of Clay Minerals. Oxford University Press.

  • Ozdeniz, A. H., Corumluoglu, O., & Kalayci, I. (2010). The relationship between the natural compaction and the spontaneous combustion of industrial-scale coal stockpiles. Energy Sources, 22, 121–129.

    Article  Google Scholar 

  • Pierre, T. G. S., Singh, B., Webb, J., & Gilkes, B. (1992). Mössbauer spectra of soil kaolins from South-Western Australia. Clays and Clay Minerals, 40, 341–346.

    Article  Google Scholar 

  • Pone, J. D. N., Hein, K. A. A., Stracher, G. B., Annegarn, H. J., Finkleman, R. B., Blake, D. R., Mccormack, J. K., & Schroeder, P. (2007). The spontaneous combustion of coal and its by-products in the Witbank and Sasolburg coalfields of South Africa. International Journal of Coal Geology, 72, 124–140.

    Article  Google Scholar 

  • Qin, Y., Wang, W., Song, D., & Zhang, X. (2005). Geochemistry characteristics and sedimentary micro-environments of no. 11 coal seam of the Taiyuan Formation of upper Carboniferous in Pingshuo mining district, Shanxi Province. Journal of Palaeogeography, 7, 249–260.

    Google Scholar 

  • Querol, X., Chinchon, S., & Lopez-Soler, A. (1989). Iron sulfide precipitation sequence in Albian coals from the Maestrazgo basin, southeastern Iberian range, Northeastern Spain. International Journal of Coal Geology, 11, 171–189.

    Article  Google Scholar 

  • Querol, X., Zhuang, X., Font, O., Izquierdo, M., Alastuey, A., Castro, I., Drooge, B. L. V., Moreno, T., Grimalt, J. O., & Elvira, J. (2011). Influence of soil cover on reducing the environmental impact of spontaneous coal combustion in coal waste gobs: A review and new experimental data. International Journal of Coal Geology, 85, 2–22.

    Article  Google Scholar 

  • Ribeiro, J., Silva, E. F. D., Li, Z., Ward, C., & Flores, D. (2010). Petrographic, mineralogical and geochemical characterization of the serrinha coal waste pile (Douro coalfield, Portugal) and the potential environmental impacts on soil, sediments and surface waters. International Journal of Coal Geology, 83, 456–466.

    Article  Google Scholar 

  • Shao, Q. (2007). The impact of heavy metals transfer from coal waste rock to soil in Xinzhuangzi subsidence area. Coal Geology & Exploration, 6, 34–37.

    Google Scholar 

  • Shi, L., Liu, Q., Zhang, Z., & Yu, X. (2011). Characteristics and genesis of coal measures kaolinite in late Paleozoic of Pingshuo mining area. In Proceedings of the Proceedings of the 13th annual meeting of the Chinese society of mineral and rock geochemistry (pp. 322).

  • Soliman, M. F., & Goresy, A. E. (2012). Framboidal and idiomorphic pyrite in the upper Maastrichtian sedimentary rocks at Gabal Oweina, Nile Valley, Egypt: Formation processes, oxidation products and genetic implications to the origin of framboidal pyrite. Geochimica et Cosmochimica Acta, 90, 195–220.

  • Spears, D. A., Tarazona, M., & Lee, S. (1994). Pyrite in UK coals: Its environmental significance. Fuel, 73, 1051–1055.

    Article  Google Scholar 

  • Stracher, G. B., & Taylor, T. P. (2004). Coal fires burning out of control around the world: Thermodynamic recipe for environmental catastrophe. International Journal of Coal Geology, 59, 7–17.

    Article  Google Scholar 

  • Tang, Y., & Ren, D. (1993). Research on different pyrites in late Permian coal of Sichuan Province, southwestern China. Coal Science and Technology, 21, 37–45.

    Article  Google Scholar 

  • Tang, Y., & Ren, D. (1996). The genesis of pyrites in coal. Geological Review, 42, 64–70.

    Google Scholar 

  • Waanders, F. B., Vinken, E., Mans, A., & Mulaba-Bafubiandi, A. F. (2003). Iron minerals in coal, weathered coal and coal ash–SEM and mössbauer results. Hyperfine Interactions, 148–149, 21–29.

    Article  Google Scholar 

  • Yang, X., & Ding, S. (2005). Study on kaolin in coal measures of west Beijing by mössbauer spectroscopy. Journal of Hebei Institute of Architectural Science and Technology, 22, 73–75.

    Google Scholar 

  • Yani, S., & Zhang, D. (2010). An experimental study into pyrite transformation during pyrolysis of Australian lignite samples. Fuel, 89, 1700–1708.

    Article  Google Scholar 

  • Zhou, C., Liu, G., Yan, Z., Fang, T., & Wang, R. (2012). Transformation behavior of mineral composition and trace elements during coal gangue combustion. Fuel, 97, 644–650.

    Article  Google Scholar 

  • Zhou, Y., LaChance, A. M., Smith, A. T., Cheng, H., Liu, Q., & Sun, L. (2019). Strategic design of clay-based multifunctional materials: From natural minerals to nanostructured membranes. Advanced Functional Materials, 29, 1807611.

    Article  Google Scholar 

  • Zhuang, X., Zeng, R., & Xu, W. (1998). Trace elements in no. 9 coal from Antaibao open pit mine, Pingshuo, Shanxi province. Earth Science-Journal of China University of Geosciences, 23, 40–45.

    Google Scholar 

Download references

Acknowledgements

This authors are grateful for financial support by the National Key R&D Program of China (No. 2019YFC1904903) and the Science and Technology Major Projects of Shanxi Province of China (No. 20181101003).

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Authors and Affiliations

  1. School of Geosciences and Surveying Engineering, China University of Mining &Technology (Beijing), Beijing, 100083, China

    Lihui Liu, Qinfu Liu, Yakui Li, Haiyue Cao & Xingjian Kang

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  1. Lihui Liu
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Liu, L., Liu, Q., Li, Y. et al. Occurrence of Iron in the Minerals of Carboniferous Coal Gangue of the Pingshuo Open-pit Mine, North China. Clays Clay Miner. 70, 695–711 (2022). https://doi.org/10.1007/s42860-022-00211-7

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