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·China s total coal production in 2021 exceeded billion tons 52% of the world s total Coal gangue a solid waste of coal mining accounts for 15 20% of coal production when directly discharged on the ground surface as waste heaps it occupies large areas of land and cause environmental pollution This paper summarizes the existing gangue backfilling
·Coal/Gangue Recognition Using Convolutional Neural Networks and Thermal Images MURAD S ALFARZAEAI1 NIU QIANG1 JIAQI ZHAO1 MEMBER IEEE REFAT M A ESHAQ2 AND ERYI HU2
·In China the connection between coal utilization and environmental pollution has been increasingly evident due to the rapid growth in energy consumption Clean coal technology CCT is one of the effective methods to address coal associated pollution However CCT needs the practical and theoretical support of clean coal geology CCG In this paper a
·The change in AP values for both coal and gangue classes AP coal and AP gangue with increasing data size exhibit a similar trend to that of mAP These findings demonstrate that the utilization of DA techniques whether traditional or GAN based DA facilitates the YOLOv4 model learn a more comprehensive and diverse range of target
·This paper provides an overview on the current status of power generation in China using coal gangue The government regulation towards the use of coal gangue for power generation is introduced
·This article proposes a method that can be used to improve the differentiation of coal and gangue via image processing and use of a support vector machine SVM Images of coal and gangue were converted to grayscale in this approach the background was segmented and the contrast was stretched
·The accumulation of coal gangue poses significant environmental challenges due to its massive volume and low reactivity This study investigates the influence of calcium hydroxide Ca OH ₂ and gypsum on the mechanical properties hydration and pore structure of low carbon cementitious materials incorporating high volumes of calcined coal gangue CCG
·The coal gangue as the only source of silicon and aluminum was employed to synthesize sodalite and faujasite using hydrothermal method which directly treated the mixture of pre treated coal gangue and NaOH solution under hydrothermal environment X ray powder diffraction analysis XRD thermogravimetry analysis TG and differential thermogravimetry
·ABSTRACT A greenhouse pot experiment was conducted to investigate the effect of application of coal gangue CG at different rates 0 5 10 20 and 50% and inoculation with two arbuscular mycorrhizal AM fungi Glomus intraradices and Glomus mosseae as mediating plant adaptation to soil amended with CG on the nutrient content of forage maize
DOI / Corpus ID 138501296; Preparation and properties of autoclaved aerated concrete using coal gangue and iron ore tailings article{Wang2016PreparationAP title={Preparation and properties of autoclaved aerated concrete using coal gangue and iron ore tailings} author={Chang An Wang and Wen Ni and
·The purpose of this study was to use coal gangue as a new type of planting substrate component with the goal of replacing soil to solve the increasing shortage of land resources The formulation
·The green and efficient use of coal gangue CG is urgently required in the Chinese coal industry to avoid its adverse environmental impact This study proposed an Al assisted carbothermal reduction method to synthesise SiC Al 2 O 3 ceramics using high C CG The optimised experimental conditions for sintering SiC and their effects on the phase
·The new thermal insulation concrete prepared by Zhang et al [12] using coal gangue can still meet the strength requirements under the condition of large thermal conductivity Wang et al [13 14
·The unique optical texture of coal is the most obvious visual features to distinguish coal and gangue The current research represented the attempt to implement the multifractal analysis in the optical texture of coal and gangue Firstly fractal theory is applied to verify the multiscale characteristics of coal and gangue images
·Coal gangue CG is a type of industrial solid waste produced by the process of coal excavation and separation 1 2 one ton of CG is discarded for every 10 tons of produced coal 4 5
·The sound signals of the collapsed coal and gangue were processed using the APM to obtain the inferior colliculus auditory signals with 48 CFs; subsequently the signals were converted into a 48 channel auditory spectrogram The conversion operation is shown in figure 8 First because the length of the inferior colliculus auditory signal at
·Yuanyuan Pu et al [6] proposed an algorithm to recognize the Coal/Gangue by using the CNN and development has been done based on the VGG16 model transfer learning used to overcome the over
·Chromium VI reduction in aqueous solutions using coal gangue Yan Li Xiaojun Wang Department of Chemistry and Environmental Engineering Xinjiang Institute of Engineering 236 NanChang Road Urumqi 830091 China Tel 86 0991 7736140 email liyan19809743 Y Li Tel 86 0991 7977263
·Adsorption of Cu2 and Co2 from aqueous solution using zeolite synthesized from coal gangue was examined at room temperature Batch experiments were carried out to investigate the effects of contact time initial ion concentration and pH on the adsorption process Under comparable conditions the adsorption greatly depended on initial ion concentration and
·In this paper a new type of autoclaved aerated concrete ACC was developed using coal gangue CGC and iron ore tailings ITOs The material compositions calcination temperatures of the coal
·Coal is one of the primary energy sources in China Due to different mining processes the environmental impact of each mining method varies Traditional mining methods have relatively low costs but a substantial ecological impact For example backfilling mining is environmentally friendly but raises mining costs for surface settlement coal gangue solid
·To discriminate between infrared photos of coal and gangue this study suggests a novel deep learning technique for binary classification that will have higher engineering prospects if the target picture database can be progressively increased Finding and identifying Engineering requires the capacity to distinguish between coal as well as gangue for example
·Although the calcination based activation of coal gangue is important for its valorization in the form of cementitious materials the related works mainly focus on high quality coal gangue neglecting its low quality counterpart To bridge this gap we herein conducted the pilot scale suspension calcination of low quality coal gangue; explored the effects of
