International Scientific Journal


The differences in the structure and thermal behavior of two coal gangues samples (Z-1 and Z-2) obtained from Inner Mongolia in China were investigated through thermogravimetry-derivative thermogravimetry (TG-DTG), X-ray diffraction (XRD), and Fourier-transform infrared (FT-IR) spectroscopy. The TG-DTG results indicate that the two coal gangue samples present different dehydroxylation temperatures and loss on ignition values. The mineralogy of the Z-1 sample consisted of kaolinite and quartz, whereas that of the Z-2 sample consisted of kaolinite, boehmite and quartz. The XRD and FT-IR spectra revealed the thermal transmission behavior of the two coal gangue samples when temperature was increased from 300 °C to 1000 °C. The coal gangue samples lost hydration water at a temperature of up to 500°C, and the layer structure collapsed completely as the temperature increased. The typical bands in the FT-IR spectra of the two coal gangue samples are similar, but several differences were observed in the intensity and positions of bands. The intensity of the characteristic bands of boehmite in the samples at 3090 and 3280cm-1 decreased as the temperature increased, and the bands disappeared at 600 °C. The thermal behavior of the coal gangue samples differed because of impurities and mineralogical compositions.
PAPER REVISED: 2016-08-04
PAPER ACCEPTED: 2016-10-18
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2018, VOLUME 22, ISSUE Issue 2, PAGES [1111 - 1119]
  1. Chen, X. Y., et al., Thermal Analyses of the Lignite Combustion In Oxygen-Enriched Atmosphere, Thermal Science, 19 (2015), 3, pp. 801-811
  2. Liu, H. B., Liu, Z. L., Recycling Utilization Patterns of Coal Mining Waste in China, Resources Conservation & Recycling, 54 (2010), 12, pp. 1331-1340
  3. Zhang, Y. Y., et al., Co-Combustion and Emission Characteristics of Coal Gangue and Low-Quality Coal, Journal of Thermal Analysis & Calorimetry. 120 (2015), 3, pp. 1883-1892
  4. Cao, Z., et al., Effect of Calcination Condition on the Microstructure and Pozzolanic Activity of Calcined Coal Gangue, International Journal of Mineral Processing, 146 (2016), Jan., pp. 23-28
  5. Ye, J. W., et al., Hazards and Comprehensive Utilization of Coal Gangue, China Resources Comprehensive Utilization, 28 (2010), 5, pp.32-34
  6. Li, Y., et al., Improvement on Pozzolanic Reactivity of Coal Gangue by Integrated Thermal and Chemical Activation, Fuel. 109 (2013), 7, pp.527-533
  7. Querol, X., et al. Environmental Characterization of Burnt Coal Gangue Banks at Yangquan, Shanxi Province, China, International Journal of Coal Geology, 75 (2008), 2, pp. 93-104
  8. Chugh, Y. P., Patwardhan, A., Mine-Mouth Power and Process Steam Generation Using Fine Coal Waste Fuel, Resources Conservation & Recycling , 40 (2004), 3, pp. 225-43
  9. Zhou, C. C., et al. Transformation Behavior of Mineral Composition and Trace Elements during Coal Gangue Combustion, Fuel 97 (2012), July, pp. 644-650
  10. Xiao, H. M., Ma, X. Q., Co-Combustion Kinetics of Sewage Sludge with Coal and Coal Gangue under Different Atmospheres, Energy Conversion & Management, 51 (2010), 10, pp. 1976-1980
  11. Frias, M., et al., Effect of Activated Coal Mining Wastes on the Properties of Blended Cement, Cement Concrete Composites 34 (2012), 5, pp. 678-683
  12. Hao, Z. F., et al., The Mineralogical Analysis and Thermal Activation Research on Coal Gangue of Zhungeer Laosangou Coalfield. Bulletin of the Chinese Ceramic Society, 35 (2016), 4, pp. 1198-1199
  13. Li, C., et al., Investigation on the Activation of Coal Gangue by a New Compound Method, Journal of Hazardous Materials, 179 (2010), 1-3, pp. 515-520
  14. Li, Z., et al., Preparation and Characterization of Glass-Ceramic Foams with Waste Quartz Sand and Coal Gangue in Different Proportions, Journal of Porous Materials, 23 (2015), 1, pp. 231-238
  15. Zhang, S. G., et al., Study on Mineralogical Characteristics of Coal Gangue in the Central Area of Hnnan, Hunan Geology, 22 (2003), 2, pp. 96-100
  16. Zhang, Y. Y., et al., Effects of Chemistry and Mineral on Structural Evolution and Chemical Reactivity of Coal Gangue during Calcination: Towards Efficient Utilization, Materials & Structures, 48 (2014), 9, pp. 1-15
  17. Cordeiro Lopes, P., Dias. F. A., Decomposition Kinetics by Thermogravimetry for the Intercalation of Kaolin with Dimethylsulphoxide, Materials Letters, 57 (2003), 22-23. pp. 3397-3401
  18. Matusik, J., Klapyta, Z., Characterization of Kaolinite Intercalation Compounds with Benzylalkylammonium Chlorides Using XRD, TGA/DTA and CHNS Elemental Analysis, Applied Clay Science 84 (2013), Oct., pp. 433-440
  19. Zhang, Y. M., et al., Thermal Behavior Analysis of Two Bentonite Samples Selected from China, Journal of Thermal Analysis & Calorimetry,121 (2015), 3, pp. 1-9
  20. Vyas, A, Iroh, J., Thermal Behavior and Structure of Clay/Nylon-6 Nanocomposite Synthesized by in Situ Solution Polymerization, Journal Thermal Analysis & Calorimetry, 117 (2014), 1, pp. 39-52
  21. Kaljuvee, T., et al., Thermal Behavior of some Estonian Clays and their Mixtures with Oil Shale Ash Additives, Journal Thermal Analysis & Calorimetry, 118 (2014), 2, pp. 891-899
  22. Ji, H. P., et al., Phase Transformation of Coal Gangue by Aluminothermic Reduction Nitridation: Influence of Sintering Temperature and Aluminum Content, Applied Clay Science, 101 (2014), Nov., pp. 94-99
  23. Zhang, Y., et al., Thermal Behavior Analysis of Two Bentonite Samples Selected from China, Journal of Thermal Analysis & Calorimetry, 121 (2015), 3, pp. 1-9
  24. Zhang, Y, et al., Investigation of Combustion Characteristics and Kinetics of Coal Gangue with Different Feedstock Properties by Thermogravimetric Analysis, J. Thermochimica Acta, 614 (2015), 8, pp. 137-148
  25. Varma, A. K., et al., Petrographic Controls on Combustion Behavior of Inertinite Rich Coal and Char and Fly Ash Formation, Fuels, 128 (2014), July, pp. 199-209
  26. Zhang, H., et al., Influence of Mineral Matters on the Calorific Value of an Anthracite under Oxygen Bomb Conditions, Energy Fuels, 18 (2004), 6, pp. 1883-1887
  27. Wang, H. M., You, C. F., Experimental Investigation into the Spontaneous Ignition Behavior of Upgraded Coal Products, Energy Fuels, 28 (2014), 3, pp. 2267-2271
  28. Bayram, H., et al., Thermal Analysis of a White Calcium Bentonite, Journal of Thermal Analysis & Calorim, 101 (2010), 3, pp. 873-879
  29. Alex, T. C., An Insight into the Changes in the Thermal Analysis Curves of Boehmite with Mechanical Activation, Journal of Thermal Analysis & Calorimetry, 117 (2014), 1, pp. 163-171
  30. Guzman-Castillo, M. L., et al., Effect of Boehmite Crystallite Size and Steaming on Alumina Properties, Journal of Physical Chemistry B, 105 (2001), 11, pp. 2099-2106
  31. Cheng, Y. F., et al., Insight into the Thermal Decomposition of Kaolinite Intercalated with Potassium Acetate: An Evolved Gas Analysis, Journal of Thermal Analysis & Calorimetry, 117 (2014), 3, pp. 1231-1239
  32. Cheng, H. F., et al., A New Method for Determining Platy Particle Aspect Ratio: A Kaolinite Case Study, Applied Clay Science, 97-98 (2014), 8, pp. 125-131
  33. Gao, Y. J., et al., Preparation and Characterization of a Novel Porous Silicate Material from Coal Gangue, Microporous & Mesoporous Materials, 217 (2015), Nov., pp. 210-218
  34. Cheng, H. F., et al., Insight into the Thermal Decomposition of Kaolinite Intercalated with Potassium Acetate: An Evolved Gas Analysis, Journal of Thermal Analysis & Calorimetry, 117 (2014), 3, pp. 1231-1239

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence