##tihuan2##The application of coal gangue as a soil amendment shows promise in increasing silicon availability, potentially serving as a silicon fertilizer in agriculture. However, the rapid release of silicon from coal gangue compared to the slow absorption by plants hinders its effective use. This study explored the formation of iron-containing …
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##tihuan2##The excessive accumulation of coal gangue leads to significant land resource depletion, resulting in soil erosion, landslides, mudslides, and other geological hazards. …
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##tihuan2##This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue aggregate on concrete properties and the prediction model of gangue concrete, …
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##tihuan2##Introduction. Mulching can prohibit the loss of soil water by wind, reduce soil evaporation, and improve the soil hydrothermal status and ecological activity; moreover, …
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##tihuan2##Cationic release, surface microstructure, and pore size distribution of coal gangue during the acid-based chemical solution corrosion were investigated. Results showed that during the interactions of gangue and chemical solution, the acidity and alkalinity of mixed solutions first decrease quickly, and then stabilize. The concentrations …
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##tihuan2##The chemical reactivity of coal gangue mainly contributes to the transformation of kaolinite to metakaolinite, while illite plays a minor role and quartz is inert. The combustion of carbon may ...
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##tihuan2##The coal gangue used in this study was obtained from Shuozhou, Shanxi province, China. The chemical composition of the raw coal gangue as well as the residue ash were quantified by an inductively coupled plasma optical emission spectrometer (ICP-OES, Pekin-Elmer, Optima 5300DV) and X-ray fluorescence spectrometry (XRF, …
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##tihuan2##The mineral petrological properties of gangue are heavily influenced by the location of the coal mine. In terms of chemical makeup, coal gangue is a mixture of organic and inorganic components. The major components of gangue are SiO 2 and Al 2 O 3. The substance additionally contains trace amounts of elements including Fe, Ca, Mg, …
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##tihuan2##Coal gangue hill, a significant anthropogenic interference, can cause various forms of land degradation. The promoting effect of coal gangue on soil qualities has …
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##tihuan2##Coal gangue is an industrial waste produced during coal mining and washing processes [1,2] and presents environmental challenges.The extraction of aluminum, iron, and other elements from it represents a significant method for resource utilization [3,4,5].However, the extraction process results in the formation of acid …
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##tihuan2##Semantic Scholar extracted view of "Chemical inertness conversion of carbon fraction in coal gangue via N-doping for efficient benzo(a)pyrene degradation." by Chao Liang et al. Skip to search form Skip to main content Skip to account menu. Semantic Scholar's Logo. Search 221,033,617 papers from all fields of science ...
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##tihuan2##Coal gangue occupies large swathes of land resources, resulting in ecological fragility and various environmental problems. ... X. Y., Cao, Y. G. & Bai, Z. K. The soil chemical properties of ...
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##tihuan2##Based on the source and distribution of coal gangue (CG) in China, this study introduces the current situation of CG storage in China and the problems existing in the process of CG utilization.
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##tihuan2##Coal gangue (CG) is a hard rock produced during coal formation, which is formed at the same time as coal seam formation. CG may enter coal from the …
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##tihuan2##It indicates that the chemical reactions between coal gangue and different biomass during the pyrolysis process directly affect the physicochemical properties, element composition, specific surface area, and porosity of biochar. Download: Download high-res image (850KB) Download: Download full-size image; Fig. 1.
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##tihuan2##Coal gangue is an underused resource and there is a lack of its utilization in the green economy. This work aims at the clean recovery of critical metals in coal gangue, with the development of a recycling extraction process through repeated utilization of ammonia and ammonium salts, and development of delamination pretreatment methods …
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##tihuan2##To reveal the mechanism of CO gas generation and adsorption in coal gangue slits at the microscopic level, a new composite kaolinite–coal–kaolinite (KCK) slit model was constructed by combining the…
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##tihuan2##Coal gangue is one of the largest mine solid wastes in China, and its discharge and stockpiling have caused resource waste, environmental pollution and other problems. Starting from the resource characteristics …
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##tihuan2##Efficient degradation of organic pollutants in complex media via advanced oxidation processes (AOPs) is still critical and challenging. Herein, nitrogen (N)-doped coal gangue (CG) catalysts (N-CG) with economic competitiveness and environmental friendliness were successfully synthesized to activate peroxymonosulfate (PMS), …
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##tihuan2##The chemical composition varies with the place of origin, stratum, cause of formation and mining method. 2.4 The Status of Coal Gangue Discharge. In recent years, the output of coal has been increasing, and the output of coal gangue has been increasing significantly. According to statistics, in 2020, the coal gangue produced in China is 729 ...
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##tihuan2##An eco-friendly way to improve the engineering properties of lower-strength soils becomes attractive. This study investigates the feasibility of two industrial by-products, i.e., coal gangue (CG) and calcium carbide residue (CCR), as a sustainable CG–CCR geopolymer binder for soil stabilization. The geomechanical properties, compressibility, …
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##tihuan2##To gauge the feasibility of using coal gangue for geotechnical and geoenvironmental applications, comprehensive characterization study was performed …
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##tihuan2##In this paper, the influence of calcium on coal gangue and fly ash geopolymer is explored, and the problem of low utilization of unburned coal gangue is analyzed and solved. The experiment took uncalcined coal gangue and fly ash as raw materials, and a regression model was developed with the response surface …
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##tihuan2##Coal gangue (CG), an industrial solid waste with high contents of Li and Ga, has attracted the attention of researchers. However, the utilization of CG remains an economic challenge. Pre-enrichment of Li and Ga by flotation was carried out with a view to improving the comprehensive utilization of CG. Mineral composition, time-of-flight …
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##tihuan2##Results showed that mechanical ball milling, microwave, and chemical activator could activate coal gangue, and the composite activation effect was the best. The fineness of the coal gangue powder ...
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##tihuan2##All the CGs in the figure are dried in an oven at 60 °C and ground. CG1 is Hebei coal gangue, which comes from a coal gangue processing plant in Xingtai, Hebei Province. It is brownish black powder after drying and grinding. CG2 is Shanxi coal gangue, from Shanxi Geology Group Co., Ltd.
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##tihuan2##coal-gangue-based silicon fertilizer, and its reliability veri-ed, thereby providing a theoretical basis for use of coal-gangue-based silicon fertilizer in agriculture. Materials and methods Materials Coal gangue The coal gangue used in the experiment comes from the Shendong mining area in Inner Mongolia, China, with an ash content of~ 85.60%.
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##tihuan2##The chemical reactivity of coal gangue mainly contributes to the transformation of kaolinite to metakaolinite, while illite plays a minor role and quartz is inert. The combustion of carbon may ...
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##tihuan2##Equations (1)–(3) show the kaolinite calcined chemical reaction. Coal gangue has a low-temperature activation zone between 500 °C and 800 °C [39,57,58,59,60], and it has the highest activity when the calcination temperature is 700–750 °C. As the continuous temperature increased, mullite appeared at 1000 °C, …
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