Announcement on how to deal with coal gangue

Opportunities, challenges and modification methods of coal

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 elements, resulting in limited efficacy and environmental contaminationTherefore, addressing the water, atmospheric, and soil environmental pollution caused by coal mining and coal gangue accumulation, this paper summarizes the relevant research progress Current situation and progress of coal gangue resource utilization2024年2月1日  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 Representative coal gangue in China: Physical and chemical 2023年12月8日  In order to realize the economical, efficient, and high resource utilization of coal gangue, this paper provides favorable suggestions and support for subsequent indepth Migration transformation, prevention, and control of typical heavy

Comprehensive utilization and environmental risks of coal gangue:

2019年12月1日  In response to the problems in the utilization of coal gangue, following suggestions were proposed: (1) scientific utilization of coal gangue; (2) specific standards 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: 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 Research Progress on Comprehensive Utilization of

Comprehensive utilization and environmental risks of coal gangue:

2019年12月1日  Aiming at the problems of the large storage, complex composition, low comprehensive utilization rate, and high environmental impact of coal gangue, this paper 2024年8月23日  How to effectively deal with coal gangue and improve its properties is vital to achieving the efficient and safe resource utilization of coal gangue in concrete Studies have shown that the crystal structure of gangue can be changed by using methods such as calcination and mechanical grinding to improve its activity [12], [13]Enhancement mechanism of microbial mineralization modified coal gangue 2024年2月15日  To address the lightweight and realtime issues of coal sorting detection, an intelligent detection method for coal and gangue, Ourv8, was proposed based on improved YOLOv8Detection of Coal and Gangue Based on Improved YOLOv8Coal 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

Effect of Gangue Distributions on Cutting Force and Specific

smaller than that of the coal seam, the gangue in the coal seam will be simplified as a single point, as seen in Fig 1a; (II)The gangue minerals, only situated in the same plane, such as Section γ in Fig 1b, will be considered and the amounts of these gangue Fig 1 Simplified model of gangue minerals in a coal seam Fig 2 Gangue positions 2024年3月14日  With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a byproduct encounters certain constraints A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall The leaching effect of acidic solutions, containing heavy metal ions and other Environmental impact assessment of acidic coal gangue2021年7月28日  Coal gangue occupies large swathes of land resources, resulting in ecological fragility and various environmental problems Despite coal gangue having mineral elements similar to those in soil, Influence of coal gangue mulching with various thicknesses and 2021年12月4日  Coal gangue is a kind of industrial waste in the coal mine preparation process Compared to conventional manual or machinebased separation technology, visionbased methods and robotic grasping Coal and Gangue Recognition Method Based on Local Texture

(PDF) Application of Coal Gangue as a Coarse Aggregate in Green

2021年11月11日  Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions2021年5月1日  Coal gangue has become one of the industrial wastes with the largest annual discharge and accumulated stock in China The disorderly accumulation of coal gangue not only occupies a large amount of Review of Coal Gangue Characteristics and Ecological Restoration 2019年12月1日  Coal gangue has a wide range of applications in building material industry, energy industry, agriculture and other emerging industries, which are presented in Fig 3 The recycle of coal gangue is considered as an ecofriendly alternative which not only addresses its disposal, but also contributes to low material costs and sustainable use ofComprehensive utilization and environmental risks of coal gangue: A 2024年5月3日  Coal gangue, the primary solid waste generated during the coal mining process, is typically disposed of on the surface, where it gradually accumulates to form gangue piles that significantly contaminate the Study on UltraLongDistance Transportable

Characterization studies on coal gangue for sustainable geotechnics

2020年2月5日  Global rise in greenhouse gas emissions (GHG) is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage Among the fossil fuels, coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process Coal gangue, a residue produced during the coal mining process, has 2011年5月1日  Coal gangue is a waste from mining coal and it is necessary to use and deal with It is rarely reported that it is not used by grinding or calciningExperimental research on performances of concrete with coal gangue2023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 2022年6月26日  Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications Producing concrete with coal gangue aggregate is one of the green sustainable development Using Chinese Coal Gangue as an Ecological Aggregate and Its

Performance degradation of CO2 cured cementcoal gangue

2022年12月1日  On average, 015 tons of coal gangue is released per ton of coal [12] Coal gangue accumulation can not only consume land resources, but also cause soil and water pollution, urban natural landscape destruction Therefore, how to deal with coal gangue with less environmental impact has become an urgent problem2024年7月16日  With the continuous development of the textile industry, a large amount of dye wastewater is continuously produced Dye wastewater readily causes allergic reactions and cancer risks, which seriously threaten the health of aquatic organisms and humans Aiming at the pollution problem of dye wastewater, the preparation conditions of calciumbased coal gangue Preparation of CalciumBased Coal Gangue Based on Response Coal gangue is kind of discharge materials in process of excavating coal deal of picking coalWith the long time stacking,coal gangue may not only engrosses a great deal of land but also pollutes the air and underground water and induces spontaneous combustionProducing green materials by using coal gangue can save much soil and have a very good benefit in the field of Analysis of Coal Gangue Used to Produce Green Materials2020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

Recognition of Coal and Gangue Based on XRay ResearchGate

2013年1月1日  Therefore, many coal mining companies prefer fully automated methods to the manual approach In fully automated coal preparation plants, two main techniques are used to separate gangue from coal 2023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 Back Study on the Reactivity Activation of Coal Gangue for 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 is more than 90% In contrast, that value in the largest coal gangue production country, namely China, is only about 60 70%, while the coal gangue utilization of China through combustion and calcination normally results in secondary pollution [4,6] How to deal with the accumulation of coal gangue and improve its utilization rate has become one ofApplication of Coal Gangue as a Coarse Aggregate in Green

Using Chinese Coal Gangue as an Ecological Aggregate and Its

2022年6月26日  DOI: 103390/ma Corpus ID: ; Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review @article{Hao2022UsingCC, title={Using Chinese Coal Gangue as an Ecological Aggregate and Its Modification: A Review}, author={Ying Hao and Xiaoning Guo and Xianhua Yao and Ruicong Han and Lielie Li and Min 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 wasteSynergistic performance of microwaveactivated coal gangue with 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 2024年2月1日  Coal is not only the most abundant fossil fuel on earth, but also an indispensable energy source in the industrial age According to the data of “2021 National Mineral Resources Reserve Statistics Table”, the cities with the most coal reserves in China's energy minerals are Inner Mongolia, Xinjiang, Shanxi, Hebei, Chongqing, Gansu, Shaanxi and other regionsRepresentative coal gangue in China: Physical and chemical

Comprehensive utilization and environmental risks of coal gangue

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 without appropriate utilization 2018年3月17日  The separation of coal and gangue is an important process of the coal preparation technology The conventional way of manual selection and separation of gangue from the raw coal can be replaced by (PDF) Extraction of Coal and Gangue Geometric Features with 2021年11月11日  2 Utilization of Coal Gangue For years, researchers have been working on the effective utilization of the enormous stocked coal gangue In China, more than a half of discharged coal gangue is used for land reclamation—one third of that is used for power generation and the rest is used for producing building materials [2,4]However, the main Application of Coal Gangue as a Coarse Aggregate in Green 2024年8月23日  How to effectively deal with coal gangue and improve its properties is vital to achieving the efficient and safe resource utilization of coal gangue in concrete Studies have shown that the crystal structure of gangue can be changed by using methods such as calcination and mechanical grinding to improve its activity [12], [13]Enhancement mechanism of microbial mineralization modified coal gangue

Detection of Coal and Gangue Based on Improved YOLOv8

2024年2月15日  To address the lightweight and realtime issues of coal sorting detection, an intelligent detection method for coal and gangue, Ourv8, was proposed based on improved YOLOv8Coal 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 smaller than that of the coal seam, the gangue in the coal seam will be simplified as a single point, as seen in Fig 1a; (II)The gangue minerals, only situated in the same plane, such as Section γ in Fig 1b, will be considered and the amounts of these gangue Fig 1 Simplified model of gangue minerals in a coal seam Fig 2 Gangue positions Effect of Gangue Distributions on Cutting Force and Specific 2024年3月14日  With the continual advancement of coal resource development, the comprehensive utilization of coal gangue as a byproduct encounters certain constraints A substantial amount of untreated coal gangue is openly stored, particularly acidic gangue exposed to rainfall The leaching effect of acidic solutions, containing heavy metal ions and other Environmental impact assessment of acidic coal gangue

Influence of coal gangue mulching with various thicknesses and

2021年7月28日  Coal gangue occupies large swathes of land resources, resulting in ecological fragility and various environmental problems Despite coal gangue having mineral elements similar to those in soil, 2021年12月4日  Coal gangue is a kind of industrial waste in the coal mine preparation process Compared to conventional manual or machinebased separation technology, visionbased methods and robotic grasping Coal and Gangue Recognition Method Based on Local Texture 2021年11月11日  Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green concrete productions(PDF) Application of Coal Gangue as a Coarse Aggregate in Green 2021年5月1日  Coal gangue has become one of the industrial wastes with the largest annual discharge and accumulated stock in China The disorderly accumulation of coal gangue not only occupies a large amount of Review of Coal Gangue Characteristics and Ecological Restoration

Comprehensive utilization and environmental risks of coal gangue: A

2019年12月1日  Coal gangue has a wide range of applications in building material industry, energy industry, agriculture and other emerging industries, which are presented in Fig 3 The recycle of coal gangue is considered as an ecofriendly alternative which not only addresses its disposal, but also contributes to low material costs and sustainable use of

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