Xugong coal gangue

Comprehensive utilization and environmental risks of coal gangue:

2019年12月1日  Coal gangue, a solid waste generated during coal mining and washing, accounts for approximately 10%–15% of the total coal production The accumulative amount 2024年9月7日  The direct application of raw coal gangue faces challenges of low active beneficial ingredients, inadequate water and fertilizer retention, presence of potentially toxic Opportunities, challenges and modification methods of coal 2024年6月4日  The origin, type, composition and geological characteristics of coal gangue should be discussed from the aspects of coal accumulation, diagenetic characteristics and Characteristics of Coal Gangue and Present Situation and Prospect 2019年12月1日  The amount of coal gangue, a byproduct of coal mining and washing, is rapidly increasing with the growing trend of energy consumption The accumulated coal gangue Comprehensive utilization and environmental risks of coal gangue:

Research Progress on Comprehensive Utilization of

Starting from the resource characteristics of coal gangue, this paper systematically discusses the ways and research status of coal gangue resource utilization, mainly including: extracting and recovering useful components such 2022年12月26日  The objectives of this review are to discuss the automated identification of coal rock during the process of coal release in China and other countries, analyze the current A review of coal gangue identification research—application to 2022年4月6日  Among coal miningrelated wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining A The Sustainable Utilization of Coal Gangue in Geotechnical and 2020年1月15日  Therefore, coal gangue can be used as a substitute for the soil currently used The optimum composition ratio of the coal gangue planting substrate is as follows: coal ganguetosoil ratio of 1:1 (500 g:500 g), maize straw content of 50 g kg −1, fly ash content of 37 g kg −1, and water retention agent content of 1 g kg −1Optimizing the formulation of coal gangue planting substrate

Lowcarbon utilization of coal gangue under the

2023年5月25日  Coal gangue, produced during coal mining and processing [1, 2], is one of the most extensively produced solid wastes in China [1, 3], accounting for approximately 10%‒20% of raw coal production []The 2024年3月6日  Some studies have used preenrichment methods, including gravity separation (eg, density fraction) 17 and flotation 18, 19, 20 to extract REY in coal These methods can somewhat preenrich REY, but the results are relatively low, and the recovery ratio is low 21 Wet leaching is an effective method of extracting REY from coal and coal gangueCharacterization and acid leaching of rare earth elements in coal 2024年3月11日  Although the calcinationbased activation of coal gangue is important for its valorization in the form of cementitious materials, the related works mainly focus on highquality coal gangue, neglecting its lowquality counterpart To bridge this gap, we herein conducted the pilotscale suspension calcination of lowquality coal gangue; explored the effects of Activation of LowQuality Coal Gangue Using Suspension MDPI2024年4月15日  Coal gangue is a byproduct of coal mining and processing, and according to incomplete statistics, China has amassed a substantial coal gangue stockpile exceeding 2600 large mountains, which poses a serious threat to the ecological environment Utilizing gangue as a coarse aggregate to produce gangue concrete (GC) presents a promising avenue for Enhancing Fatigue Performance of Coal Gangue Concrete (CGC

Synergistic performance of microwaveactivated coal gangue with

2024年11月1日  Coal gangue, which is abundant and often considered a waste material, poses significant environmental challenges due to its disposal issues Utilizing coal gangue in cement production not only addresses the raw material shortage but also offers a sustainable solution for managing industrial waste2023年9月21日  In this study, the research aim is to enhance the activity index of activated coal gangue and study its activation mechanism The activation process of coal gangue was optimized through orthogonal tests, and the BackPropagation (BP) neural network model was improved using a genetic algorithm With the effects of grinding duration, calcination temperature, and Study on the Reactivity Activation of Coal Gangue for Efficient2023年8月31日  The coal gangue is crushed and screened in the coal preparation plant to form small particles (less than 6 cm) These particles are then paved into a roadbed with a thickness of about 35 cm After compaction, the density can reach 18 t/m 3 so that the roadbed has good waterproof performance and durability and is more costeffectiveHow to Recycle and Process Coal Gangue: 7 Effective Ways2023年12月8日  During the extraction and processing of coal, a large amount of solid waste, collectively known as gangue, is produced This gangue has a low carbon content but a high ash content, accounting for approximately 15 to 20% of the total coal yield Before coal is used, coal and gangue must be effectively separated to reduce the gangue content in the raw coal and Coal and Gangue Classification Based on LaserInduced

Research and prospect of underground intelligent coal gangue

2024年9月1日  As a byproduct of coal production, coal gangue, if not handled properly, will pose an important hidden danger to the environment and safety Using underground intelligent coal gangue sorting technology can increase efficiency, protect the environment, and enhance safety, which is essential for achieving efficient and ecofriendly coal productionCoal 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 of coal gangue, this paper Research Progress on Comprehensive Utilization of 2024年9月20日  Coal gangue contains a portion of clay minerals, and after thermal activation of about 700 ℃, the kaolinite in calcined coal gangue (CCG) can be transformed into metakaolin, which has pozzolanic activity and can be used as supplementary cementitious materials (SCMs) [10], [11], [12]This can not only consume a large portion of discharged coal gangue, but also Improvement of strength and microstructure of lowcarbon 2023年2月1日  1 Introduction Coal gangue is a byproduct of coal mining and washing process (Li et al, 2006)In China, there are 5 billion tons of coal gangue accumulated as residual waste, and this value continues to grow at the rate of 300–350 tons per year (Li and Wang, 2019; Moghadam et al, 2019)Large amount of coal gangue not only occupies farmland, but also Enhancement of coal gangue performance by surface micro

Cocombustion and emission characteristics of coal gangue and

2015年2月18日  The reuse of coal gangue for energy recovery is developing rapidly in China, due to its advantage in achieving both economic and environmental benefits Lowquality coal is often added to elevate the calorific value of the fuel In this paper, the combustion characteristics as well as pollutant emissions (SO2 and NO) of coal gangue, lowquality coal and their blends 2022年4月6日  “Effect of coal gangue particle size on its leaching characteristics” In GeoCongress 2020: GeoSystems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics, Geotechnical Special Publication 319, edited by J P Hambleton, R Makhnenko, and A S Budge, 107–114The Sustainable Utilization of Coal Gangue in Geotechnical and 2024年9月28日  Coal gangue (CG) can be a potential aggregate for concrete production considering its huge production However, its porous structure and high water absorption significantly impact the workability of concrete, restricting its comprehensive utilization This paper proposed a straightforward presoaking technique for CG, where the presoaked CG (PCG) is Internal Curing for Tunnel SelfCompacting Concrete Using Pre Coal gangue, a byproduct produced during the coal processing, has a serious impact on the environment Using coal gangue as a fertilizer has been proven helpful in potentially reducing its environmental impact and improving its value In this study, the formation mechanism and influencing factors of coalganguebased silicon fertilizer was studied using XRD and FTIR Sustainable and clean utilization of coal gangue: activation and

Research on Recognition of Coal and Gangue Based on Laser

2023年11月11日  Coal gangue image recognition is a critical technology for achieving automatic separation in coal processing, characterized by its rapid, environmentally friendly, and energysaving nature However, the response characteristics of coal and gangue vary greatly under different illuminance conditions, which poses challenges to the stability of feature extraction 2020年2月20日  A large amount of coal gangue buildup may be a potential fire hazard associated with the heat released by microorganisms accumulating to the point of spontaneous combustion in the presence of unburned coal, pyrite (FeS 2) and oxygenCoal gangue is likely to cause largescale fire and blast disasters, and produce a significant amount of toxic emissions Reactivity activation of waste coal gangue and its impact on the 2019年5月8日  The coal gangue classification precision reaches 997% when tested on 1479 images Compared with YOLOv5 series, YOLOv7 series, SSD and FasterRCNN, Image Recognition of Coal and Coal Gangue Using a 2024年7月19日  The occurrence of gallium in galliumenriched coal gangue and the migration of gallium during thermal treatment were systematically studied The phase and chemical composition of galliumenriched coal gangue were determined, and the gallium content was determined by inductively coupled plasma mass spectrometer (ICPMS) The mineralogical Study on the Occurrence of Gallium in GalliumEnriched Coal Gangue

Air and oxyfuel combustion characteristics of coal gangue and

2023年12月1日  Coal gangue, characterized by high ash content and low heating value, is an undesired but inevitable byproduct of coal mining [[1], [2], [3]]Based on the fuel flexibility advantage of circulating fluidized bed combustion (CFBC) technology and increasing demand for electricity, coal gangue is widely used in CFBC power plants for power generation in some 2024年10月9日  The coalgangue recognition technology plays an important role in the intelligent realization of fully mechanized caving face and the improvement of coal quality Although great progress has been Coalgangue sound recognition using hybrid multibranch CNN 2012年7月2日  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(PDF) Power Generation from Coal Gangue in China2023年11月23日  Process of filling goaf with coal gangue slurry The process of filling goaf with coal gangue slurry is shown in Fig 2Specifically: the coal gangue is crushed by a multistage crusher and enters Technology and engineering test of filling goaf with coal gangue

Comprehensive utilization and environmental risks of coal gangue: A

2019年12月1日  Coal gangue, a solid waste generated during coal mining and washing, accounts for approximately 10%–15% of the total coal production The accumulative amount of coal gangue is largely increasing associated with coal mining activities, becoming one of the largest industrial residuesPDF On Jan 1, 2021, 增澳 董 published Research Progress on Comprehensive Utilization and Resourceful Treatment of Coal Gangue Find, read and cite all the research you need on ResearchGateResearch Progress on Comprehensive Utilization and Resourceful 2023年12月1日  Online intelligent recognition of coal and gangue is an important aspect of coal mine intelligent development Current research focuses more on improving recognition accuracy through optimizing image processing algorithms, but there is limited research on the characteristics of coal gangue materials themselves, particularly the comparative analysis of Investigating comparisons on the coal and gangue in various The coal gangue in China is the core field of bulk solid waste comprehensive utilization due to its massive stock and emission, high concentration of output, small proportion of highvalueadded utilization, and outstanding environmental impact Hence, the prospect of resource utilization of coal gangue is broad The existing disposal capacity and scale of coal gangue obviously Research progress of highvalue utilization of coal gangue

Feasibility Analysis of BacterialTreated Coal Gangue for Soil

2024年6月28日  The longterm storage of coal gangue (CG) mountains causes serious environmental problems such as water and air pollution Thus, sustainable reclamation practices are urgently needed to minimize the environmental impacts brought by CG mountains Pikovskaya medium was employed to screen microorganisms, which were subsequently 2018年8月19日  To evaluate the release and transformation characteristics of different forms of Cl in coal gangue during combustion, the effect factors of combustion temperature, combustion time and air flux Release and Transformation Characteristics of Modes of 2024年7月12日  Coal gangue (CG), which accounts for about 10–20 % of coal output, is a kind of solid waste generated during the coal mining and washing processes According to Fig 2, the annual output of CG in China fluctuates between 600–800 million tons, with a utilization rate hovering around 70 %Review Highcapacity utilization of coal gangue as supplementary 2024年9月13日  The cement used is CEM I 425 N, with its principal characteristics outlined in Table 1The fine aggregate used in this study comprises natural river sand with a fineness modulus of 23, and its gradation curve is illustrated in Fig 1The coarse aggregate is coal gangue obtained from a coal mine in Wuhai City, Inner Mongolia, China, crushed and sieved to The impact of microwave curing on the strength and

Detection of coal and gangue Download Scientific Diagram

In coal production, the raw coal contains a large amount of gangue, which affects the quality of coal and pollutes the environment Separating coal and gangue can improve coal quality, save energy 2023年2月27日  Synthesis and development of highefficiency and lowcost adsorbents for treating of the wastewater containing heavy metal ions and/or dyes has been aroused worldwide attention in recent years In this study, the coal gangue as the only supply of Si and Al was adopted to synthesize sodalite using hydrothermal method Both the gangue and the Characterization of coal gangue and coal ganguebased sodalite 2016年2月26日  Ore sorting is a useful tool to remove gangue material from the ore and increase the quality of the ore The vast developments in the area of artificial intelligence allow fast processing of fullcolor digital images for the preferred investigations The associated gangue minerals from limestone and coal mines were identified using three different approaches All Novel Methods for Separation of Gangue from Limestone and Coal 2021年1月25日  In China, coal gangue accounting for 1/10, even 1/5 of coal production, is one of the major industrial and mineral residues The stock of coal gangue in China has reached a billion level, with an increasing rate of 150–200 million per year [7], [8]How to utilize the stacked coal gangue is a serious topic in mining industry and construction industryUtilization of coal gangue as coarse aggregates in structural

Characteristics of Coal Gangue and Present Situation and

2024年6月4日  Coal gangue is a kind of solid waste produced in the process of coal production and processing, which accounts for about 10–20% of coal output on average (Liangji et al 2014), it is the solid waste with the largest output and land occupation in industrial production (Qi 2019)2024年2月23日  To address the issues of complex algorithm models, poor accuracy, and low realtime performance in the coal industry's coal gangue sorting, a lightweight realtime detection method called YOLOv8sGSC is proposed based on the characteristics of coal gangue This method incorporates the ghost module into the YOLOv8s backbone network to reduce the The realtime detection method for coal gangue based on2020年6月20日  NACG has potential pozzolanic activity after spontaneous combustion due to reactive SiO 2 and Al 2 O 3 (Yang et al, 2018)At present, there are two major ways to utilize of coal gangue: coal gangueburning electricity generation (Liu and Liu, 2010) and construction industry materials (Cao et al, 2016)Zhang, C S (2006) proposed that an optimal pozzolanic Research on shotcrete in mine using nonactivated waste coal gangue

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