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Environmental Geochemistry and Health
With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a by-product encounters certain constraints. A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall.
Yanwen, Guo +3 more
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With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a by-product encounters certain constraints. A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall.
Yanwen, Guo +3 more
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Activity and structure of calcined coal gangue
Journal of Wuhan University of Technology-Mater. Sci. Ed., 2007Coal gangue was activated by means of calcination in seven temperature ranges. Systematic research was made about activation mechanism and structural evolution. Glycerin-ethanol method, SEM, MIP and XRD were used to determine the variation of structure and activation of coal gangue during the calcination.
Gong, Chenchen +3 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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Research on a Coal Gangue Identification Device
Applied Mechanics and Materials, 2013The paper designed a coal gangue identification device. It firstly proposed to use the guide groove to guide, grayscale sensor to recognize and the corresponding mechanical actuators to realize automatic separation of coal and waste rocks. Compared with other separation device, it firstly put forward solutions to realize the linear arrangement of ...
Gang Feng Zheng +3 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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Synthesis of SiC Ceramics from Coal Gangue
Materials Science Forum, 2005The synthesis and the sintering of SiC from coal gangue by carbothermal synthesized in N2 atmosphere are studied. The material, 5 percent carbon black added and sintered at 1400°C for 2 hours, had good properties and a bending strength of 137.8MPa. Too high temperature or too long holding time made the properties of the material to decrease.
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Identification and Activation of Coal Gangue and Performance of Limestone Calcined Gangue Cement
2020Gangue, a typical waste associated with the coal mining process in northern China, was characterized before and after thermal treatment by XRF, XRD, TGA-DSC, and SEM. The pozzolanic reactivity of calcined gangue with different calcined temperature was tested by standard mortar strength and R3 calorimetry test.
Bin Wang, Tongbo Sui, Hao Sui
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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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