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Preparation and characterization of coal gangue geopolymers
Construction and Building Materials, 2018Abstract This paper explores the impacts of sodium hydroxide modulus, alkali lye amount and liquid–solid ratio on the strength and microstructure of coal gangue geopolymer materials, involving a total of five sodium hydroxide moduli, four NH/NS mass ratios and seven liquid–solid ratios.
Yi Cheng +6 more
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Thermal decomposition of selected coal gangue
Journal of Thermal Analysis and Calorimetry, 2017The thermal behavior of two mineral-type coal gangues under different temperature conditions was investigated by heating treatment of kaolinite-type coal gangue and illite-type coal gangue based on thermal analysis, X-ray diffraction (XRD), infrared spectroscopy (IR) and scanning electron microscopy (SEM).
Xu, Bohui +4 more
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Engineering properties of cement with coal gangue
2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011Engineering properties of cement with coal gangue was studied to determine the compressive strength, freeze-thaw and shrinkage characteristics of the material. The composition of coal gangue was determined using the screening test; the liquid limit, plastic limit and water ratio of the cement with coal gangue were measured using the Liquid and Plastic ...
Yan Zhang, Jun Zhang
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Progress of Purification and Applications of Coal Gangue
Advanced Materials Research, 2013coal gangue, as one of the largest industrial solid wastes discharged during coal production has caused serious environmental pollution. However, the utilization level of coal gangue is not the same in different countries. Through purification and activation ,the utilization rate of coal gangue could increase gradually,while bioleaching method can also
Teng Huang +3 more
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Utilization of coal gangue for the production of brick
Journal of Material Cycles and Waste Management, 2016Coal gangue, an industrial solid waste discarded from coal mining and processing, was used as the sole raw material to prepare brick. The coal gangue was crushed, homogenized, milled and then pressed into green compacts. The dried compacts were sintered at different temperatures for 2 h.
Hongliang Xu +7 more
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Discussions of Resource Utilization of Coal Gangue
Advanced Materials Research, 2014The ways of using coal gangue in electricity generation, chemical utilization and building-material production are introduced and national coal gangue utilization status and development trend is analyzed in this paper. Pointing out the main problems in present utilization of coal gangues, suggestions on coal gangue resource utilization are given that ...
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Preparation of Coal Gangue Cement Mortar
Advanced Materials Research, 2013Many researches on coal gangue are aimed at increasing its activity by many methods together such as thermal, mechanical and chemical. The methods are so complex that they are difficult to be adopted by some companies. In this paper, considering the low-strength requirement of cement mortar, the activity of coal gangue is more evidently shown by Ca(OH ...
Wen Xia Li +3 more
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Direct-impact of sieving coal and gangue
Mining Science and Technology (China), 2010Abstract Gangue from underground separation of coal can directly be used for filling mined out areas, saving transport capacity and reducing the amount of waste polluting the environment above the ground. We introduced a structure and operating principle of an underground direct-impact sieving device by which a separation experiment was carried out ...
Jianping LI, Changlong DU, Jianwei BAO
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Identification of Coal Gangue in Coal using YOLO V7
2023 7th International Conference on Trends in Electronics and Informatics (ICOEI), 2023Pavithra D +4 more
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