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Comprehensive utilization and environmental risks of coal gangue:
2019/12/1 The amount of coal gangue, a by-product of coal mining and washing, is rapidly increasing with the growing trend of energy consumption. The accumulated coal gangue احصل على السعر
Representative coal gangue in China: Physical and chemical
2024/2/1 In the traditional coal mining practice, gangue waste is piled up on the surface to form a gangue hill. The distribution of CG is characterized by being more abundant in the احصل على السعر
Opportunities, challenges and modification methods of coal
2024/9/7 However, a substantial amount of coal gangue was generated and discharged during the coal mining, washing and processing processes. Coal gangue, a black-gray rock احصل على السعر
Technology and engineering test of filling goaf with coal gangue
2023/11/23 The source of coal gangue in the coal mine includes the ground-washed gangue, the ground gangue dump, the underground sorted gangue, and the underground احصل على السعر
Underground Disposal of Coal Gangue Backfill in China
2022/11/25 China’s total coal production in 2021 exceeded 4.13 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 احصل على السعر
Characteristics of Coal Gangue and Present Situation and Prospect
2024/6/4 The coal industry is an important pillar industry of economic development in China (Xiaonan et al. 2016), along with coal mining produces a lot of coal gangue, which احصل على السعر
The Sustainable Utilization of Coal Gangue in
2022/4/6 Among coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining. A thorough understanding of environmental concerns احصل على السعر
Low-carbon utilization of coal gangue under the
2023/5/25 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 احصل على السعر
Research Progress on Comprehensive Utilization of
Coal 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 احصل على السعر
Comprehensive utilization and environmental risks of coal gangue: A ...
2019/12/1 The amount of coal gangue, a by-product of coal mining and washing, is rapidly increasing with the growing trend of energy consumption. The accumulated coal gangue احصل على السعر
Precise detection of coal and gangue based on natural γ-ray
2024/1/13 The developed mine intrinsic safe coal and gangue natural ray real-time detection system includes two parts: detector and data acquisition display terminal. The احصل على السعر
Integrated green mining technology of “coal mining-gangue
2021/8/24 In Tangshan Mine, there are four engineering problems, including the layout of multiple seam mining system, serious environmental damages caused by gangue احصل على السعر
Study on the macro–micro evolution of compaction ... - Nature
2024/2/28 Fill mining, as a green mining technology, utilises coal gangue underground for filling in order to reduce problems such as difficulty in accumulating coal gangue on the احصل على السعر
Research and engineering practice on space characteristics of gangue
2023/12/12 The issue of gangue emissions accompanying coal production is one of the key factors currently hindering the green and efficient development of the coal industry احصل على السعر
Characterization studies on coal gangue for sustainable geotechnics
2020/2/5 The coal mining activity involves the release of waste at different levels of its execution, and the largest among such wastes is coal gangue, which accounts for 15% of the احصل على السعر
Effects of Fine Gangue on Strength, Resistivity, and Microscopic ...
The cemented coal gangue backfill (CGB) in coal mining is normally made of gangue (particle size of 0–15 mm), fly ash, cement, and water. In this study, the effects of the weight content احصل على السعر
Diffusion law of coal gangue slurry and the application of
2023/8/14 Diffusion test of coal gangue slurry middling coal gangue is taken from a mine of Ningxia Coal Industry Co., LTD. From the appearance, it is dark gray. After screening, it is in احصل على السعر
Comprehensive utilization and environmental risks of coal gangue
China’s total coal production in 2021 exceeded 4.13 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 احصل على السعر
Research Progress on Comprehensive Utilization of Coal Gangue
Coal 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 احصل على السعر
A review of coal gangue identification research ... - Springer
2022/12/26 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 احصل على السعر
Gangue grouting filling in subsequent space of coal green mining ...
2024/3/27 Underground backfilling stands out as a crucial technological strategy for the eco-friendly and effective management of solid waste in mining operations. However, existing احصل على السعر
Characteristics of Coal Gangue and Present Situation and
2024/6/4 The coal industry is an important pillar industry of economic development in China, with coal mining produced a lot of coal gangue, which is occupied land, and pollution of احصل على السعر
The use of coal gangue as a planting substrate in arid mining
2024/11/24 Coal gangue is a black solid waste generated during the extraction and refinement of coal resources (Luo et al., 2020) that is increasingly being accumulated at احصل على السعر
A review of coal gangue identification research ... - Springer
2022/12/26 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 احصل على السعر
Gangue grouting filling in subsequent space of coal green mining ...
2024/3/27 Underground backfilling stands out as a crucial technological strategy for the eco-friendly and effective management of solid waste in mining operations. However, existing احصل على السعر
Characteristics of Coal Gangue and Present Situation and
2024/6/4 The coal industry is an important pillar industry of economic development in China, with coal mining produced a lot of coal gangue, which is occupied land, and pollution of احصل على السعر
The use of coal gangue as a planting substrate in arid mining
2024/11/24 Coal gangue is a black solid waste generated during the extraction and refinement of coal resources (Luo et al., 2020) that is increasingly being accumulated at احصل على السعر
Separation and Recovery of Valuable Carbon ... - ACS Publications
2024/3/13 Coal gangue, a solid waste of coal mining accounts for 15-20% of coal prodn., when directly discharged on the ground surface as waste heaps, it occupies large areas of احصل على السعر
Environmental hazards and comprehensive utilization of solid waste coal
2024/4/1 Coal mining and washing is accompanied by the production of large amounts of coal gangue, which exerts a notable influence on the natural environment. However, as a form احصل على السعر
Explanation of heavy metal pollution in coal mines of china from
2021/7/7 In the process of coal gangue surface accumulation and underground filling disposal, the heavy metals contained in coal gangue will inevitably precipitate out and migrate, احصل على السعر
Preventing water inrush hazards in coal mines by coal gangue
2023/9/13 The backfilling mining method that fills gobs with coal gangue can prevent water inrush hazards, protect groundwater resources, and protect the ecological environment of the احصل على السعر
Life cycle assessment of coal mines of diverse scales over time in ...
2024/2/20 Coal mining has important detrimental effects on the environment and human health. By the end of 2022, China mined more than 4 billion tons of raw coal, and coal mining احصل على السعر
Environmental impact assessment of acidic coal gangue
2024/3/14 In contrast with coal, gangue, characterized by a lower carbon content and higher hardness, constitutes approximately 20 percent of raw coal production and is co احصل على السعر
A review of intelligent coal gangue separation technology and
2023/11/6 In coal mining, the automatic removal of coal gangue is an important link in modern coal production and processing. The majority of coal mining and production in China احصل على السعر
Analysis of Composition of Coal Gangue Based on Deep
2022/12/5 Coal gangue is the main solid waste in coal mining areas, and its annual emissions account for about 10% of coal production. The composition information of coal احصل على السعر
Study on mechanical properties of coal gangue and fly ash
2023/10/11 Backfill mining can effectively alleviate the problems of surface collapse and ecological water pollution, in which the mechanical properties of backfill materials, including احصل على السعر
Co-combustion and emission characteristics of coal gangue and
2015/2/18 Coal gangue is a problematic by-product generated from the process of mining and beneficiation of coal. It approximately accounts for 10–15 mass % of coal production احصل على السعر
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