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In view of the characteristics of the high content of SO42−, Fe2+ and Mn2+ in acid mine drainage (AMD) and low pH value, based on adsorption and biological methods, coal gangue was combined with …
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Coal gangue is the largest amount of industrial solid waste in China. It caused serious damage to the ecological environment and waste resources. Therefore, it is of great significance to realize the resource utilization of coal gangue, protecting the environment and realizing the sustainable development of society. This paper …
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The properties of coal gangue. The main chemical compositions of coal gangue are SiO 2, Al 2 O 3, Fe 2 O 3, and CaO, which occupies 58, 24, 7 and 5 wt.%, respectively.According to the basic requirements for brick materials reported by Raut et al 22, these coal gangue accumulated in Huainan Coalfield is a suitable raw materials for …
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This study was conducted at the Suntuan coal mine in the Huaibei mining area, located at 33°33′49.5072″ N and 116°46′3.3852″ E. The coal gangue used in this study was obtained from the Suntuan coal mine and crushed to a size less than 5 mm, with particles below 2 mm, accounting for approximately 70%.
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Combustion of coal gangue is extensively used for power generation in China. In this paper, pyrolysis and combustion characteristics of a low-rank coal gangue have been investigated under oxy-fuel ...
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The environmental geochemistry of trace elements and naturally radionuclides in a coal gangue brick-making plant. Chuncai Zhou, Guijian Liu, Siwei Cheng, Ting Fang, Paul K ... focused on the transformation and distribution behaviors of trace elements and natural radionuclides around a coal gangue brick plant was conducted. Simultaneous sampling ...
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1. Introduction. Separation of coal and gangue is the key to efficient and clean utilization of coal [1].In this context, mineral sorting technology based on computer vision has been the focus of research in recent years [2].The use of image processing to recognize coal and gangue is safer and more convenient than traditional coal washing …
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Coal gangue, as an associated product of coal mining, can cause a large number of piles to undergo slow oxidation and spontaneous combustion, resulting in the production of toxic and harmful gases, leading to casualties, environmental damage, and economic losses. Gel has been extensively employed as a fire-retardant material …
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coal-gangue-based silicon fertilizer, and its reliability veri-ed, thereby providing a theoretical basis for use of coal-gangue-based silicon fertilizer in agriculture. Materials and methods Materials Coal gangue The coal gangue used in the experiment comes from the Shendong mining area in Inner Mongolia, China, with an ash content of~ 85.60%.
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The reuse of coal gangue for energy recovery is developing rapidly in China, due to its advantage in achieving both economic and environmental benefits. Low-quality 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 …
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DOI: 10.1016/J.JCLEPRO.2018.08.331 Corpus ID: 158715169; Co-utilization of spent pot-lining and coal gangue by hydrothermal acid-leaching method to prepare silicon carbide powder
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Explore how Mexican architects use bricks, a traditional and sustainable material, for structural and aesthetic purposes in various projects. See examples of brick facades, …
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Complementary advantages of spent pot lining and coal gangue in the detoxification and valuable components recovery process
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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 the environment, and the production and life of coal-producing areas have been seriously affected, coal gangue has become a heavy burden restricting the sustainable …
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In spite of some advantages of using coal gangue, it is notable that negative environmental problems cannot be ignored, so the scientific utilization is necessary to control the environmental ...
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Coal gangue had a significant effect on TP, soil shrinkage and DIR, which is beneficial to reconstructed soil stability and surface water–groundwater conversion.
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However, previous studies of coal gangue brick making emissions were primarily focused on fluoride (Xie et al., 2003), and little information about the partitioning behaviors of toxic elements from brick making is available. It is thus of great interest to study the structural characteristics and behavior of elements involved in coal gangue ...
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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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Abstract. Among coal mining-related wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase …
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For example, coal gangue containing high calorific value can be used for power generation; low calorific value coal gangue can be used to make brick and …
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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 aggregates.
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Coal gangue is a waste byproduct generated during coal mining and processing. It is harder than coal, has a lower carbon content, and its main components are SiO 2 and Al 2 O 3.. Coal gangue has become a significant industrial solid waste because it pollutes the environment and is prone to spontaneous combustion.
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characteristic of coal gangue, the co-combustion of coal gangue with coal or biomass also has been studied and the results show the co-combustion can lower the ignition and burnout temperature which is beneficial to the combustion of coal gangue (Zhang et al. 2015; Zhou et al. 2015). However, there are fewer studies on the co-combustion
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As a massive solid waste, the high value-added utilization of coal gangue has received more and more attention in China. This study focuses on the utilization of coal gangue aggregate in railway …
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Coal gangue, an industrial solid waste discarded from coal mining and processing, was used as the sole raw material to prepare brick. The coal gangue was …
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The main chemical compositions (Table 1) of coal gangue are SiO 2 (54–60%), Al 2 O 3 (23–27%), Fe 2 O 3 (6–9%) and CaO (7–11%), which are deemed a suitable raw material for brick making (Raut et al., 2011).The high SiO 2 and Al 2 O 3 contents in the coal gangue suggested high compositions of clay minerals and quartz. …
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Coal gangue is one of the largest industrial solid wastes in China; the comprehensive utilization of coal gangue has important social, economic and environmental benefits. In this paper, the coal gangue and comprehensive utilization have been discussed in detail. Through the survey results, expounds the development of the …
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ABSTRACT. Coal gangue has accumulated huge coal gangue piles, occupying lots of land as well as having striking influence on the neighboring …
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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 …
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Coal gangue image recognition is a critical technology for achieving automatic separation in coal processing, characterized by its rapid, environmentally friendly, and energy-saving nature. However, the response characteristics of coal and gangue vary greatly under different illuminance conditions, which poses challenges to the stability of …
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These elements may release from the combusted coal gangue into atmosphere during coal gangue firing in the brick making plant, which may lead to …
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Breathing in coal dust or ash is also known to be a cause for lung cancer development over time. A coal mining disease called "Black Lung" can impact total lung capacity, is incurable, and is often fatal. People with Black Lung literally die of suffocation. 5. Even clean coal still has high levels of methane.
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Using coal gangue to make bricks not only saves land, but also consumes waste from mines. It is a low-carbon building material that is conducive to environmental …
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The high activity of natural radionuclides in the atmosphere around the plant as well as in the made-up bricks will increase the health risk of respiratory system. An investigation focused on the transformation and distribution behaviors of trace elements and natural radionuclides around a coal gangue brick plant was conducted. Simultaneous sampling …
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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 labor-intensive but also can introduce inaccuracies. Coal and …
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The Environmental Geochemistry of Trace Elements and Naturally Radionuclides in a Coal Gangue Brick-Making Plant Chuncai Zhou1,2,3, Guijian Liu1,2, Siwei Cheng 1, Ting Fang & Paul K. S. Lam3 1CAS ...
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