gangue production process
A facile green and cost-effective manufacturing process
2023.3.1 Abstract. Utilization of high-filler coal gangue (CG) to produce cost-effective composites is a promising strategy. To clarify the impact of high-filled CG on composite
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Comprehensive utilization and environmental risks of coal gangue: A ...
2019.12.1 In China, the production of coal gangue has accumulated more than 5 billion tons and is still rising at an annual rate of 300–350 million tons. The total gangue
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Using Chinese Coal Gangue as an Ecological
2022.6.26 This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue aggregate on concrete properties and the prediction model of gangue
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Sustainable and clean utilization of coal gangue: activation
2022.5.12 Coal gangue, a by-product produced during the coal processing, has a serious impact on the environment. Using coal gangue as a fertilizer has been proven
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Exploring calcined coal gangue fines as the total substitute
2022.12.1 Coal gangue, a waste produced during coal mining, has been regarded as the largest source of industrial waste in China. It is estimated that the production of 1 t
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Biodegradation of organic compounds in the coal gangue by
2023.1.3 Coal gangue (CG), a solid waste generated during coal mining and washing, accounts for about 10–15% of the total coal production (Li and Wang 2019).The amount
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Low-carbon utilization of coal gangue under the carbon
2023.5.25 Abstract. The treatment and utilization of coal gangue, one of the main solid wastes produced during coal mining, are of great significance in environmental
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Research on Coal Gangue Recognition Based on Multi
2023.7.5 First, the process of coal gangue symbiosis and the harm of gangue in top coal caving are analyzed, and the fundamental method of comprehensive treatment of
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(PDF) i) Direct Reduced Iron: Production
2016.3.30 In book: Encyclopedia of Iron, Steel, and Their Alloys (pp.pp 1082-1108) Chapter: i) Direct Reduced Iron: Production; Publisher: CRC Press, Taylor and Francis Group, New York.
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Comprehensive utilization and environmental risks of coal gangue: A ...
2019.12.1 The total gangue production in China is expected to approximately 729 million tons by 2020, becoming a primary environmental concern (Ge et al., 2010). ... The heat continues to accumulate during the accumulation process, which leads to spontaneous combustion with the oxidization of coal gangue (Ozdeniz et al., 2010), releasing a large
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Optimization Production Scheduling of Underground
2022.5.23 In the green backfilling mining of underground coal mines, gangue in a coal seam is used to replace and fill goafs. However, the gas drainage time changes in the amount of gangue output and order in the extraction sequence of stope blocks, thereby changing the production output. A multi-objective integer programming model was
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(PDF) Underground Disposal of Coal Gangue Backfill in
2022.11.25 The annual coal gangue production in different provinces of China from 2017 to 2021. Appl. Sci. 2022, 12, x FOR PEER REVIEW 5 ... process and technology of aboveground gangue disposal, and the ...
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Study on Preparation of Coal Gangue-Based Geopolymer
2021.5.7 Silicate cement has high energy consumption and serious pollution in the production process. The emergence of geopolymer prepared from coal gangue waste, a new environmental production material, undoubtedly provides a value-added method for such industrial while overcoming the shortcomings of traditional concrete such as high energy
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Preparation of porous cordierite ceramic with acid-leached coal gangue ...
2020.3.19 Coal gangue is a complex industrial solid waste discharged during excavation and washing of coal in the course of production. The amount of coal gangue accumulated in China has exceeded 5 billion tons [1,2,3]; moreover, the stockpile of gangue is still increasing at the rate of approximately 0.3 billion tons per year [4, 5].The disposal
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In-situ preparation of coal gangue-based catalytic material
2022.11.10 Coal gangue belongs to coal sedimentary rock, which is a useless mineral produced in the process of coal mining and washing, accounting for about 10%–15% of the total coal output. With the increase of coal mining activities in recent years, the accumulated coal gangue has become the largest source of solid waste in industrial
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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 surface as waste heaps, it occupies large areas of land and cause environmental pollution. This paper summarizes the
اObtener precioUnderground 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 surface as waste heaps, it occupies large areas of land and cause environmental pollution. This paper summarizes the
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Feasibility study on the application of coal gangue as landfill
2017.5.1 The production of industrial solid wastes in China has been increased by 230% from 1.0 ... Three isotherm models were used to analyze the equilibrium isothermal sorption process of Pb 2+ and Zn 2+ on the coal gangue: Langmuir, Freundlich and Dubinin-Radushkevich (D-R) models. The Langmuir model assumed a monomolecular layer
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Exploring calcined coal gangue fines as the total substitute
2022.12.1 1. Introduction. Coal gangue, a waste produced during coal mining, has been regarded as the largest source of industrial waste in China. It is estimated that the production of 1 t coal generates 0.1–0.25 t coal gangue [1], and the total stockpile of coal gangue exceeds 6 billion tons in China [2], [3].The coal gangue not only occupies
اObtener precioUnderground 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 surface as waste heaps, it occupies large areas of land and cause environmental pollution. This paper summarizes the
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Research on Coal Gangue Recognition Based on Multi
2023.7.7 Under the background of China’s carbon peaking and carbon neutrality goals, 4 it is of extreme significance to realize clean coal production by strengthening scientific and technological support. Gangue is a common solid waste in the process of geological mineral mining. 5,6 In the actual coal production process, coal and gangue
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Coal and Gangue Separating Robot System Based on
2021.2.14 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, and reduce consumption and make rational use of resources. The separated gangue can also be reused. Robots with computer vision
اObtener precioProcessing the ores of rare-earth elements SpringerLink
2022.3.21 Significant academic research and moderate commercial process innovation on rare-earth element (REE) processing have been underway for decades. The last several years have seen exponential growth in research due to growth in demand of REE that is threatened by supply risks and environmental obstacles. The REE industry
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Sensors Free Full-Text Multi-Arm Global Cooperative Coal Gangue ...
2022.10.19 Coal gangue accounts for about 15% of coal content, and burning it produces harmful substances and affects the efficiency of coal combustion. The existence of coal gangue seriously restricts coal selection rates and quality, so the separation of coal gangue is a vital step in coal production and is an important method of improving coal
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Rapid Analysis of Composition of Coal Gangue Based on
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 gangue is the basis of reasonable utilization of coal gangue, and according to the composition information of coal gangue, one can choose the appropriate application
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Development of the vanadium industry - ScienceDirect
2021.1.1 This production process was designed based on that for processing pig iron and vanadium slag, which was successfully demonstrated in 1949. An intermediate test was carried out in 1961. After the ore is prereduced, vanadium slag and molten iron are obtained by deep reduction in an electric furnace. This method was first used for production in 1968.
اObtener precioGangue Source Reduction Technology and Process
2023.8.22 The precise identification of damp, sticky coal gangue; efficient jet nozzle separation; and process layout in a narrow, restricted space are essential technologies for gangue source reduction based on underground gangue photoelectric separation, which is critical for the long-term growth of coal mines. In this paper, the X-ray absorption fine
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(PDF) Calcined Coal Gangue Fines as the Substitute for Slag
2022.8.8 In typical gangue production, CGF accounts for about 20% of the total. Processes 2022, 10, 1557. https: ... the mixing process, the formation of carbonate can be attributed to the carbonation of.
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