Results 11 to 20 of about 9,578 (228)
Study on mechanical properties and microstructure of steel-polypropylene fiber coal gangue concrete
Frontiers in Materials, 2023 Incorporating coal gangue into the concrete matrix can realize the utilization of solid waste and reduce the use of natural aggregate. To improve the mechanical properties of coal gangue concrete, this paper designs four-level and four-factor orthogonal ...
Jiuyang Li +5 more
doaj +1 more source
Study on the Failure Characteristics of Coal Wall Spalling in Thick Coal Seam with Gangue
Advances in Civil Engineering, 2020 Coal wall spalling is one of the main factors restricting the safe and efficient mining of thick coal seam, and the gangue has an important impact on the coal wall spalling.
Guosheng Li +3 more
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Scientific Reports, 2023 In order to deeply study the basic characteristics, diffusion laws, and flow laws of coal gangue and coal gangue slurry, the basic characteristic parameters of coal gangue and coal gangue slurry were obtained through particle size distribution test ...
Ji-qiang Zhang +5 more
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Test Study on Combustion Adjustment of 330 MW Circulating Fluidized Bed Boiler
发电技术, 2019 A circulating fluidized bed (CFB) boiler of the 330 MW unit have problems such as nonuniform bed temperature, heating surface wear, tube burst and so on. Combustion optimizing adjustment test was carried out to solve these problems.
Xianbin SUN +7 more
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Quantitative determination of modal content and morphological properties of coal sulphides by digital image analysis as a tool to check their flotation behaviour [PDF]
, 2003 An efficient depression of coal sulphides in the flotation process means a healthier environment and may be essential for the sustainability of a coal operation.
Alvarez +13 more
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矿业科学学报, 2022 Natural aggregate is increasingly scarce, and the reuse of solid waste is highly valued. Application of coal gangue aggregate has been drawing broad attention.
Wang Yan, Zuo Zhen, Wen Bo, Gao Guanyi
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Shock and Vibration, 2022 In the process of top coal caving mining, the caving time and the tail beam swing angle have an important impact on the evolution of the coal gangue boundary, which determines the top coal recovery rate and gangue content rate. Therefore, it is necessary
Qingliang Zeng +4 more
doaj +1 more source
Coal gangue recognition based on spectral imaging combined with XGBoost.
PLoS ONE, 2023 The identification of coal gangue is of great significance for its intelligent separation. To overcome the interference of visible light, we propose coal gangue recognition based on multispectral imaging and Extreme Gradient Boosting (XGBoost).
Minghao Zhou, Wenhao Lai
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Mechanism on Activation of Coal Gangue Admixture
Advances in Civil Engineering, 2021 Coal gangue, an industrial waste, is rich in silicon and aluminum phase and may be used as a mineral admixture in concrete after moderately stimulating activity, allowing for efficient solid waste utilization. This study used a mortar strength and activity evaluation method to investigate single or compound activation methods to find the optimum ...
Jixi Chen +3 more
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Experimental Study on Properties of Rock‐Cemented Coal Gangue‐Fly Ash Backfill Bimaterials with Different Coal Gangue Particle Sizes [PDF]
Advances in Civil Engineering, 2020 Properties of rock‐cemented coal gangue‐fly ash backfill (CGFB) bimaterials determine the effects of strip CGFB mining on controlling the surface subsidence in coal mines, which are affected by the coal gangue particle size in CGFB. In this paper, uniaxial compression tests were conducted on the coarse sandstone‐CGFB composite samples with different ...
Yabo Wang +5 more
openaire +2 more sources