Coal wastes: handling, pollution, impacts, and utilization. Soheil Jahandari, ... Maroun Rahme, in The Coal Handbook (Second Edition), 2023. 4.9 Common coal wastes for reuse 4.9.1 Waste rock or overburden. Coal mine waste rock (CMWR) generated in coal mining activities is one of the most significant sources of industrial solid waste. Nearly 4.5 …
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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 of coal mining. A thorough understanding of environmental concerns associated with the current model of ...
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This study presents a feasible approach of recovering residual coal from coal mine waste rocks (CMWR) and reusing the derived tailings to produce ecofriendly fired bricks. The first step aims at the production of high grade anthracite coal concentrate …
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DOI: 10.1016/J.PROENG.2016.07.089 Corpus ID: 139066794; Use of Coal-Mining and Processing Wastes in Production of Bricks and Fuel for Their Burning @article{Stolboushkin2016UseOC, title={Use of Coal-Mining and Processing Wastes in Production of Bricks and Fuel for Their Burning}, author={Andrey Yu.
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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 requirements. This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue …
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Environmental conservation and technological innovation and development are the major focus of future sustainable built environment [].Thus sustainable utilization of industrial wastes in civil engineering applications shall be a viable approach to meet the demands of raw materials such as cement, sand, aggregates, backfill soil and gypsum …
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An integrated process has been proposed to recover residual coal from coal mine waste rocks (CMWR) and to reuse the derived tailings to produce ecofriendly fired bricks. The first step aims at the
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Fly-ash and coal gangue are the two main industrial solid waste in China. The chemical compositions (shown in Table 1) were SiO 2, Al 2 O 3, Fe 2 O 3 and some impurities. As the coal gangue is main solid waste for coal mining, one of the most common approaches to waste rock is to stack construction that encapsulate the most …
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This paper presents utilization of waste rock of surface coalmine in making bricks and blocks in place of clay bricks. These bricks and blocks may be used in building construction and as pavement ...
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Utilizing coal waste byproducts formed during mine development or use is important in solving environmental problems and recycling of waste materials. In this …
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As sintering temperatures increase from 1000 °C to 1200 °C, the porosity of thermal insulation bricks gradually decreased from 19.8% to 6.6% (Figure 11a), and the cumulative pore volume ...
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This paper presents utilization of waste rock of surface coalmine in making bricks and blocks in place of clay bricks. These bricks and blocks may be used in building …
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By theoretical basis and experiment, this research determined valid rates of waste rock (from wastes of disposal area of Thong Nhat coal mine), fly ash and cement conforming to standard block ...
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1. Introduction. The rapid growth of industrialization has resulted in a surge in solid waste production, with a particular focus on the challenges posed by various waste types such as coal mine overburden and red mud (Soliman and Moustafa, 2020).Industrial waste, although accounting for a smaller portion of overall waste, contains both …
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The water absorption of bricks gradually increased with increase in treated coal mine tailings (TCMT) and coal mine waste rock (CMWR) percentage (0-100 %) [108]. The water absorption of bricks ...
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This paper presents utilization of waste rock of surface coalmine in making bricks and blocks in place of clay bricks. These bricks and blocks may be used in building construction and as pavement ...
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Coal is defined as having more than 50 percent by weight (or 70 percent by volume) carbonaceous matter produced by the compaction and hardening of altered plant remains—namely, peat deposits. Different varieties of coal arise because of differences in the kinds of plant material (coal type), degree of coalification (coal rank), and range of …
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The coal mining industry creates hundreds of millions of tons of rock, waste coal, and cleaning waste streams comprising coal bed methane (CBM), coal sludge, fine …
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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 … Expand
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overburden rocks and waste coal with traditional for semi-dry pressing mass preparation and according to the developed method are given. It was established that a homogeneous, defect- ... In order to study the structure and properties of ceramic bricks from waste coal and coal enrichment using the developed method of mass preparation, …
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China is the largest coal consumer around the world, and coal accounts for more than 60% of the country's energy mix (Peng et al. 2018; Wang et al. 2019).Coal fly ash (CFA), a solid waste produced by coal-fired thermal power plants during the combustion of pulverized coal, is currently one of the largest solid wastes in China (Yao …
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Waste rock utilization in coal mining area reduce environmental impact, more availability of land resource and reduction in mining cost, which occurs on the maintenance of mine spoil as reclamation, plantation, slope stability etc. ... barrier in making of bricks And those impurities are rocks and lumps of coal because they can create problem ...
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Semantic Scholar extracted view of "Leaching and geochemical behavior of fired bricks containing coal wastes." by Y. Taha et al. ... This paper deals with the potential reuse of coal mine waste rocks (CMWR) as an alternative material for road construction to conserve the natural resources and sustainable management of mining … Expand. 35
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Input material for producing special cement, mineral wool Source: (Fan et al., 2014) The use of CMWR in brick making and electricity generation are suitable revenue-generating activities for ...
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Three raw samples were used in this study to manufacture cylindrical brick samples. A reference material consisting of shales for bricks (ShB) and two types of coal wastes; coal waste rocks (CMWR) and corresponding treated coal tailings (TCMT). TCMT is the result of the decarbonation of CMWR by froth flotation process (Taha et al., 2017).
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The studies concerning the usage of coal production reject in the ceramic industry are scarce. Coal mine waste rocks and treated coal mine tailings, containing soil and leftover coal dust, were used to produce 50% or eco-friendly bricks (Abi et al., 2011, Lemeshev et al., 2004, Taha et al., 2016).
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The technology of waste coal recycling is offered that can be used in the production of coal fuel for bricks burning and preparation of the raw material for …
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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 crushed, homogenized, milled and then pressed into green compacts. The dried compacts were sintered at different temperatures for 2 h. The obtained brick samples were …
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Also, the coal mine waste rocks (CMWR) wastes were successfully interred for the production of eco-friendly fired bricks at a laboratory scale [10,11], in the production of cement [12,13] and asphalt …
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Abstract. Coal fly ash (CFA) is a coal ignition buildup at thermal power plants, which has been viewed as a hazardous waste globally. The major problems with CFA are the large volume of land needed for its disposal and poisonous weighty metal sifted to groundwater.
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The goal is to assess the effect of thermal treatment on the leaching quality of fired bricks containing coal wastes. Two types of coal wastes were evaluated: coal waste rock (CMWR) and corresponding treated coal tailings (TCMT). A reference brick containing only natural shales (ShB) is used as a reference material.
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Mineral waste can be defined as a material leftover from exploration, mining and quarrying operation that cannot find a productive use. It is the high-volume material that originates from the excavation and physical and chemical processing of a wide range of metalliferous and non-metalliferous minerals by opencast and deep shaft methods [].The …
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This paper focuses on the possibility of recycling waste rock in coal mining as an aggregate in producing concrete. Accordingly, the waste rock was crushed to …
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This paper deals with the potential reuse of coal mine waste rocks (CMWR) as an alternative material for road construction to conserve the natural resources and sustainable management of mining waste. The investigation was conducted through the determination of the chemical, mineralogical, geotechnical properties, and acid mine …
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Utilisation of coal mine and combustion waste provides an alternative to disposal and waste management, as it imparts benefits to the coal producers and other communities (Hodgkinson & Grigorescu, 2021; US Department of Energy, 2019).The presence of minerals and energy in coal waste offer opportunities as a raw material for …
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DOI: 10.1016/J.RNREC.2013.12.001 Corpus ID: 109838880; Reduction and utilization of coal mine waste rock in China: A case study in Tiefa coalfield @article{Fan2014ReductionAU, title={Reduction and utilization of coal mine waste rock in China: A case study in Tiefa coalfield}, author={Gangwei Fan and Dongsheng Zhang …
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This state-of-the-art review highlights the severity of the problems that are associated with OB dumps and the potential to use OB as geomaterial for construction …
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Abstract Coal flotation wastes from of OOO MMK–UGOL' were studied using a semiquantitative method; air and fire shrinkage, sintering, refractoriness, and tensile strength were determined. It has been proposed to use the wastes in an amount of 10–30% as an inert and combustible additive to clay mixtures for ceramic brick production by a …
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Sustainable management of coal waste is one of the major environmental concerns for coal mining, whether active or legacy, worldwide. Coal dump deposits demand a large physical area or footprint for disposal of solid waste, change the topography, and generate both pyritic dust and acid rock drainage (ARD) where pyritic coal waste is …
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