Coal gangue

Representative coal gangue in China: Physical and chemical

2024年2月1日  This paper studies the representative coal gangue (CG) samples in China, analyzes their chemical composition, heavy metal coupling mechanism and risk assessment It 2024年9月7日  Coal gangue, a blackgray rock with lower carbon content and heat value compared to coal, accounts for about 15%20% of coal production (Li et al 2006) The Opportunities, challenges and modification methods of coal 2019年12月1日  This paper summarizes the literature on coal gangue, a byproduct of coal mining and washing, and its applications in building material, energy, agriculture and other Comprehensive utilization and environmental risks of coal gangue: 2023年5月25日  This article summarizes the research progress of coal gangue treatment and utilization under the carbon neutralization strategy It analyzes the carbon emission risks and effects of coal gangue itself, its treatment process, Lowcarbon utilization of coal gangue under the

Characteristics of Coal Gangue and Present Situation and Prospect

2024年6月4日  This paper analyzes the characteristics, composition and status of coal gangue, a solid waste produced in coal mining, and discusses the current policies and prospects of coal 2019年12月1日  Therefore, the main objective of this paper is to provide a comprehensive literature review of coal gangue utilization in building material production, energy generation, Comprehensive utilization and environmental risks of coal gangue: 2021年5月1日  In this paper, the physical, chemical and pollution characteristics of coal gangue are summarized, and the ecological restoration mode is divided into two modes: traditional Review of Coal Gangue Characteristics and Ecological Restoration 2024年9月7日  Coal gangue is a complex industrial solid waste mixed with organic compounds, inorganic compounds and minerals (Fabiańska et al 2013)Its major chemical compositions are SiO 2, Al 2 O 3 and Fe 2 O 3, with traces of CaO, P 2 O 5, MgO and MnO 2The chemical composition of coal gangue from various sources and its comparison with soil reference Opportunities, challenges and modification methods of 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, 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 Characterization studies on coal gangue for sustainable geotechnics2022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 2022年12月26日  Top coal caving is a process for the rational extraction of large amounts of coal resources However, this process readily causes release of excessive amounts of gangue during the coal release process The conventional technique, which involves visual inspection, is not only laborintensive but also can introduce inaccuracies Coal and gangue identification methods A review of coal gangue identification research—application to

Excess sulfur and Fe elements drive changes in soil and Nature

2020年6月26日  Coal gangue piles accumulate outside mines and can persist for years, negatively impacting the regional environment To determine the main cause of soil pollution at coal gangues, several coal 2023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 Against the backdrop of achieving the goals of “peak carbon emissions and carbon neutrality”, coal, as the cornerstone of national energy security, plays a crucial role in the green development of our country’s economic construction and social development However, during the process of coal mining and washing, coal gangue, as the primary associated byproduct of coal, has Current situation and progress of coal gangue resource utilization2015年2月18日  Coal gangue is a problematic byproduct generated from the process of mining and beneficiation of coal It approximately accounts for 10–15 mass % of coal production []Huge quantities of coal gangue has been stockpiled during decades of coal production and cause severe environmental impacts, such as acid drainage, heavy metals leaching as well as Cocombustion and emission characteristics of coal gangue and

Environmental effects of coal gangue and its utilization

2016年11月1日  Coal gangue has accumulated huge coal gangue piles, occupying lots of land as well as having striking influence on the neighboring environmental effects This paper seeks a new way of coal gangue treatment in which the coal gangue blended with shale and sludge was sintered in rotary kiln to form lightweight aggregates2023年11月23日  Coal gangue refers to the carboncontaining solid waste discharged from the coal mine during the development and excavation, coal mining, raw coal washing, and other production processesTechnology and engineering test of filling goaf with coal gangue 2021年9月1日  Coal gangue is the solid waste produced during coal mining and accounting for about 10–20% of total coal output It is estimated that about 08–16 billion tons of coal gangue is produced globally in 2019 However, only less than 30% of coal gangue is utilized Mineral phase transformation in coal gangue by high temperature 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 Research progress of highvalue utilization of coal

Preparation of coal gangue ceramsite highstrength concrete and

2022年9月30日  Coal gangue (CG) is a type of industrial solid waste produced by the process of coal excavation and separation 1,2,3 Generally, one ton of CG is discarded for every 10 tons of produced coal 4 , 5 2023年11月6日  Traditional Coal Gangue Separation Process and Equipment Water washing and dry coal preparation are the main parts of coal preparation Spiral separation, jigging, heavy medium separation, and other processes are water washing processes, which have the advantages of mature technology, high separation accuracy, and large processing capacity Full article: A review of intelligent coal gangue separation 2024年3月13日  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 Preenrichment of Li and Ga by flotation was carried out with a view to improving the comprehensive utilization of CG Mineral composition, timeofflight secondary ion mass Separation and Recovery of Valuable Carbon ACS Publications2023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 Ways

Research on the Identification Mechanism of Coal Gangue Based

2022年12月20日  For coal and gangue, intelligent sorting processes for separation, the use of coal and gangue mineral components with different fundamental differences, and the study of different properties of minerals and coal with different scales and density regarding the gray value change law are presented The results show that the gray value of single minerals and mixed 2024年1月13日  To address the technical limitations of automatic coal and gangue detection technology in fully mechanized top coal caving mining operations, the low radiation level radioactivity measurement Precise detection of coal and gangue based on natural γray2017年12月20日  Coal gangue is one of the largest industrial residues It has high ash content, low carbonaceous content, and heating value Meanwhile, it has some trace elements Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land Now, coal gangue utilization is a Trace Elements in Coal Gangue: A Review IntechOpen2024年2月28日  Currently the main method of mine solid waste disposal and utilization is to apply gangue to underground filling For the grading characteristics of coal gangue in the hollow zone in underground Study on the macro–micro evolution of compaction Nature

Review Highcapacity utilization of coal gangue as supplementary

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 %2019年12月1日  Coal gangue (CG) is an associated product in the process of coal mining and washing, accounting for approximately 1015% of the raw coal production, Comprehensive utilization and environmental risks of coal gangue2021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 2024年1月18日  Coal gangue is a fixed coal mining, washing, and processing product It is a blackgray rock with lower carbon content and harder than coal associated with coal seams during the coal formation process And its chemical composition Coal Gangue: Composition, Processing, Use And Recycling

Coal Gangue Recognition during Coal Preparation Using an

2023年2月26日  The recognition of coal and gangue is the premise and foundation of coal gangue intelligent sorting Adaptive boosting (AdaBoost) algorithmbased coal gangue identification has not been studied in depth This paper proposed a coal gangue image recognition algorithm and a strong classifier based on the AdaBoost algorithm with a genetic 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 Coal is the main energy in our country and the ballast stone of energy security As an inevitable product in the process of coal mining and coal washing, coal gangue has an annual output of more than 700 million tons, which is in urgent need of largescale and ecological utilization to solve the problem of coal gangue as a stumbling block in enterprise developmentPrinciples and key technologies for the largescale ecological 2023年9月21日  Coal is one of the important nonrenewable resources and related to global energy security In recent years, coal consumption has accounted for over 50% of the onetime energy consumption in China []Coal gangue is the main solid waste generated during the coal mining and washing process, which accounts for 15% to 20% of the coal production []Study on the Reactivity Activation of Coal Gangue for Efficient

Design and application of coal gangue sorting system based on

2024年7月17日  With the advancement of science and technology, coalwashing plants are transitioning to intelligent, informationbased, and professional sorting systems This shift accelerates the construction a 2024年9月7日  Coal gangue is a complex industrial solid waste mixed with organic compounds, inorganic compounds and minerals (Fabiańska et al 2013)Its major chemical compositions are SiO 2, Al 2 O 3 and Fe 2 O 3, with traces of CaO, P 2 O 5, MgO and MnO 2The chemical composition of coal gangue from various sources and its comparison with soil reference Opportunities, challenges and modification methods of coal gangue 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, Influence of coal gangue mulching with various thicknesses and 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 Characterization studies on coal gangue for sustainable geotechnics

The Sustainable Utilization of Coal Gangue in Geotechnical and

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, 107–1142022年12月26日  Top coal caving is a process for the rational extraction of large amounts of coal resources However, this process readily causes release of excessive amounts of gangue during the coal release process The conventional technique, which involves visual inspection, is not only laborintensive but also can introduce inaccuracies Coal and gangue identification methods A review of coal gangue identification research—application to 2020年6月26日  Coal gangue piles accumulate outside mines and can persist for years, negatively impacting the regional environment To determine the main cause of soil pollution at coal gangues, several coal Excess sulfur and Fe elements drive changes in soil and Nature2023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

Current situation and progress of coal gangue resource utilization

Against the backdrop of achieving the goals of “peak carbon emissions and carbon neutrality”, coal, as the cornerstone of national energy security, plays a crucial role in the green development of our country’s economic construction and social development However, during the process of coal mining and washing, coal gangue, as the primary associated byproduct of coal, has 2015年2月18日  Coal gangue is a problematic byproduct generated from the process of mining and beneficiation of coal It approximately accounts for 10–15 mass % of coal production []Huge quantities of coal gangue has been stockpiled during decades of coal production and cause severe environmental impacts, such as acid drainage, heavy metals leaching as well as Cocombustion and emission characteristics of coal gangue and 2016年11月1日  Coal gangue has accumulated huge coal gangue piles, occupying lots of land as well as having striking influence on the neighboring environmental effects This paper seeks a new way of coal gangue treatment in which the coal gangue blended with shale and sludge was sintered in rotary kiln to form lightweight aggregatesEnvironmental effects of coal gangue and its utilization

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