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potential of construction rubbish mining gangue

Abstract Iron ore tailings and coal gangue powder are the main sources of industrial solid wastes, the dispose of which has become severe and urgent with the increasing demand of environmental harmony. The present study firstly proposed a reasonable way to deal with the large amount of iron ore tailings and coal gangue powder by making them as the sintered bricks with sewage sludge and shale ...

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Recycling utilization patterns of coal mining waste in

Recycling utilization patterns of coal mining waste in

Oct 01, 2010 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 pyrite rich rocks in the core of a waste rock stack …

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Mine Waste Transfer and Disposal Methods Mine Tailings

Mine Waste Transfer and Disposal Methods Mine Tailings

For example, gangue and tailings from mining heavy metals could have a high concentration of sulfides which could cause acid rock drainage to occur.Fote Mining Machinery Co. Due to the many variables, mining operations will need to develop their own methods of waste disposal in accordance with regulations pertaining to the different types of waste they produce.

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US EPA EPA and Hardrock Mining A Source Book for

US EPA EPA and Hardrock Mining A Source Book for

If the gangue rock at the site consists of several lithologic types that will be mined in sequence, then the resulting waste rock dump could contain vertical or lateral changes in rock type that might impact water quality models and geotechnical stability.

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Feasibility study on the application of coal gangue as

Feasibility study on the application of coal gangue as

Of the total mining waste, coal gangue alone accounts to 20-40% and it is characterised by its diversity in grain size and petrographic composition [1][2][3][4].

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Chemical Modification of Combusted Coal Gangue for U VI

Chemical Modification of Combusted Coal Gangue for U VI

Uranium mining waste causes serious radiation-related health and environmental problems. This has encouraged efforts toward U(VI) removal with low cost and high efficiency.stone crushing equipment manufacturers in uae rock crusher Fote Mining Machinery Co. Typical uranium adsorbents, such as polymers, geopolymers, zeolites, and MOFs, and their associated high costs limit their practical applications. In this regard, this work found that the natural combusted coal gangue (CCG ...

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PDF Recycling Utilization Patterns of Coal Mining Waste

PDF Recycling Utilization Patterns of Coal Mining Waste

Correspondingly, it has produced large quantities of mining waste including coal gangue, coal sludge, fly-ash, coal mine drainage and coal-bed methane (CBM) that are hazardous to the soil, air ..click here..

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Why Recycling of Construction Waste Is Important

Why Recycling of Construction Waste Is Important

Nov 28, 2019 Recycling construction waste is becoming more and more important because of the limit spaces and environmental protection demands. Current estimates show that if we can recycle all concrete and asphalts produced annually in America, we’ll save the energy equivalent of 1 billion gallons of gasoline or the removal of more than 1 million cars from the road.

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Henan Dewo Machinery Mining amp Construction Solutions

Henan Dewo Machinery Mining amp Construction Solutions

Approved by the China National Commerce Ministry, established in 1986, located in Zhengzhou, Henan. We have more than 1000 employees which including Over100 R&D staffs. Henan Dewo is a comprehensive enterprise which integrates researching, manufacturing, market developing and service for mining crushing equipment.

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Characterization studies on coal gangue for sustainable

Characterization studies on coal gangue for sustainable

Feb 05, 2020 From CFA, it can be concluded that a net savings of 1709 CO 2 (kg) is attainable with the utilization of coal gangue in the construction of MSE wall. Practical relevance and potential applications The present study on coal gangue has shown the feasibility of its usage as a potential alternative to natural soils. Utilization of coal gangue has both monetary and environmental benefits …

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Compound utilization of construction and industrial waste

Compound utilization of construction and industrial waste

Jul 01, 2021 Similar to RCP, coal gangue powder is a by-product arising when coal gangue is crushed into aggregates. The utilization of coal gangue powder as supplementary cementitious material will contribute to improving the economic and environmental benefits, by benefiting from the full usage of the potential of coal gangue (Li and Wang, 2019).

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Comprehensive utilization and environmental risks of coal

Comprehensive utilization and environmental risks of coal

Abstract 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 without appropriate utilization has resulted in a squander of resources, waste disposal and environmental pollution issues. Over the past few decades, there has been wide attention in developing strategies for the ...

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Reclaiming Subsidized Land An Evaluation of Coal Gangue

Reclaiming Subsidized Land An Evaluation of Coal Gangue

Jan 20, 2020 Gangue is composed of carbon-bearing rocks and rocks discharged from coal mines in the process of well construction, excavation, coal mining, and coal washing . It refers to the aggregation of solid waste discharged during coal mine construction and production [ 10 ].

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Research on the technology of detection and risk

Research on the technology of detection and risk

Jul 06, 2020 It is the most important solid waste in mining areas and one of the major pollution sources in mines. Generally, coal gangue accounts for approximately 15% of the total coal production. Due to different mining methods and changes in geological conditions, the coal gangue production varies between 10 and 15% (Liang et al. 2014 , Dai et al. 2012 ...

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The Effect of Acid Mine Drainage Corrosion on the Creep

The Effect of Acid Mine Drainage Corrosion on the Creep

Oct 20, 2020 Acid mine drainage (AMD) is a hazardous by-product of coal mining, which may intensify the creep deformation of cemented gangue backfill (CGB) in solid backfill mining. In this study, the long-term stability and creep property of CGB soaked in AMD were quantitatively measured by experimental and theoretical analysis. The uniaxial compressive strength, elastic modulus, and mass …

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Materials Free Full Text Evaluation of Mechanical

Materials Free Full Text Evaluation of Mechanical

Coal gangue, a solid waste produced in coal production, had caused serious environmental pollution due to accumulation on dumps. Embankment filling can solve the problem while significantly consuming the amount of coal waste for mining. The main purpose of this study is to investigate the mechanical properties and microscopic structure of coal gangue when it is subjected to erosion from water ...

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Anglo and Eriez developing record International Mining

Anglo and Eriez developing record International Mining

Jun 04, 2020 During its ‘Concentrating the Mine’ workshops held in 2015 and 2016, Anglo American first identified coarse particle recovery (CPR) as a key enabling technology. CPR is one of many significant breakthrough technology initiatives that has the potential to increase throughput and productivity, while simultaneously reducing environmental footprint, through rejection of coarse gangue …

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Urban Mining and Metal Recycling emewCorporation

Urban Mining and Metal Recycling emewCorporation

Urban mining is a relatively new concept which gets people to recycle not just e-waste, but also industrial and municipal garbage, construction waste and furniture. All these contain copper, tin, zinc, gold, silver, platinum, iridium and various other metals. Today we are standing at the breaking point where recovering metal becomes cheaper ...

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Environmental friendly coal gangue biochar composites

Environmental friendly coal gangue biochar composites

Mar 01, 2021 Coal gangue, as a solid waste generated during coal mining and washing, not only encroaches on a large number of land resources but also poses certain risks to the environment. It is reported that the cumulative amount of coal gangue piled up in China has reached 6 billion tons, and the annual discharge amount is about 500–800 million tons.

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Tailoring pore structure and properties of waste derived

Tailoring pore structure and properties of waste derived

waste from coal mining and has caused an increasingly worrying pollution in mines and agriculture. Therefore, the disposal of coal gangue is an urgent issue that needs to be quickly solved. Currently, most of the coal gangue is used a er processing in construction eld in the form of cement and

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Reactivity activation of waste coal gangue and its impact

Reactivity activation of waste coal gangue and its impact

Abstract Coal gangue is the main industrial solid waste that is physically separated from bulk coal during coal preparation. In China, the deposition amount of coal gangue is over 500 million tons with an annual production of more than 70 million tons. Extensive studies have been carried out to find a feasible way to reuse coal gangue in cement-based material in order to reduce its ...

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Mining Engineering amp Mineral Exploration Economics

Mining Engineering amp Mineral Exploration Economics

Feb 19, 2018 Usually in mining it is not possible to separate the ore from the gangue, and this has to be done later in an industrial process. Associated cost include; the cost of breaking, moving and storing the ore in waste rock, which are cost to equipment fuel and labor. And the cost of concentrating the ore, by separating it from the gangue.

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Valorization of waste from coal mining pyrite

Valorization of waste from coal mining pyrite

Aug 01, 2021 The coal mining industries generate a considerable volume of pyrite-rich tailings (FeS 2).However, pyrite waste is potentially reusable. Therefore, this study aimed to evaluate possible ways of waste and effluent valorization that are generated during the processing of coal mining pyrite (R1).

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Experimental Study on the Characteristics of Activated

Experimental Study on the Characteristics of Activated

May 15, 2020 various industrial solid wastes, such as slag, fly ash, red mud, waste glass, and coal gangue [15–18]. The silica and alumina components account for 60–95% of coal gangue so that coal gangue has potential characteristics as a raw material to prepare geopolymer. However, the coal gangue structure is stable.

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Dynamic substance flow analysis of lead in the fossil fuel

Dynamic substance flow analysis of lead in the fossil fuel

From 1980 to 2018, the unused gangue in landfills and the gangue used for road construction, land reclamation, and filling subsidence areas accumulated 156 kt and 90 kt of lead. Since 2000, with the formulation and implementation of a series of regulations and policies, flue gas desulphurization facilities have been rapidly implemented in China ...

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Potentially useful elements Al Fe Ga Ge U in coal

Potentially useful elements Al Fe Ga Ge U in coal

Feb 14, 2018 Coal gangue has become one of the largest industrial solid waste in China, but it is also a kind of reserve resources. Representative coal gangue samples from different coal mines (mainly in Permo-Carboniferous and Jurassic) in Weibei area in Shaanxi Province are collected, and potentially useful elements (Al, Fe, Ga, Ge, U) in coal gangue are analyzed. The results show that the reserves …

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