Method for preventing spontaneous combustion of coal gangue

Fire prevention and control using gel-stabilization to …

In order to solve the problem of the spontaneous combustion of coal gangue, a coal gangue fire-extinguishing material of gel– was developed. The ing agent was screened by the Waring blender … Expand

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Effect of spontaneous-combustion coal gangue aggregate …

1. Introduction. Pyrite (FeS 2) components oxidize and release heat spontaneously in coal gangue, and due to heat accumulation, the temperature reaches the ignition point where spontaneous combustion occurs and spontaneous-combustion coal gangue (SCG) forms in this process [1].Building materials can use 100 million tons …

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Numerical Simulation of the Dynamic Change Law of …

Combustion of Coal Gangue Mountains. The spontaneous combustion process of coal gangue is continuously advancing under the action of multiphysics coupling, and its formation, development, and evolution mechanism are shown in Figure 1. Among them, after theair diffusesinto interior through pores of the coal gangue mountain, it …

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Experimental study of thermophysical properties of coal gangue …

Li et al. [18] combined the model-free method and model fitting method to determine the kinetic parameters during gangue combustion. They also studied the variation trend of gangue thermophysical ...

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Mechanism and In Situ Prevention of Oxidation in Coal Gangue …

The acid pollution produced from coal gangue piles is a global environmental problem. Terminal technologies, such as neutralization, precipitation, adsorption, ion exchange, membrane technology, biological treatment, and electrochemistry, have been developed for acid mine drainage (AMD) treatment. These …

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Representative coal gangue in China: Physical and chemical …

1.2. Source and distribution of CG in China. CG is a kind of black gray shale rock produced in the process of coal production. China is the world's largest coal producer (Munir et al., 2020) and also the largest coal consumer.Coal provides about 62% of China's energy demand (Mita et al., 2015).In the process of sorting and processing, the production of …

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Environment influences and extinguish technology of spontaneous …

The spontaneous combustion of coal gangue is severely harmful to ecology environment around mining area,so,preventing coal gangue from spontaneous combustion is one of the most important research … Expand

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Effect of Bactericides on Control of Acidification …

Pollution and Spontaneous Combustion of Coal Gangue Dumps in China and Its Mechanism ... preventing pH decreases and ... The disk inhibition zone experiment is an experimental method to determine ...

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Optimization of the Monitoring of Coal …

Coal spontaneous combustion (CSC) in gob not only leads to wasted resources and casualties, but also produces a lot of waste gas that pollutes the underground environment. Mastering the degree of …

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Study on Thermodynamic Characteristics and Heat …

spontaneous combustion of coal gangue mountain, based ... prevention and control methods are carried out focusing on the kinetic characteristics of uncontrolled spontaneous combustion and heat transfer process of coal gangue mountain. †e scientic management of re has important

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Experimental study of the effects of stacking modes on the …

Highlights. •. Four typical coal gangue stacking modes were selected to study. •. Self-heating degree of the coal gangue models was measured. •. Loess …

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Numerical Simulation of the Dynamic Change Law of Spontaneous …

The research results provide a theoretical reference for the prevention and control measures of spontaneous combustion of coal gangue mountains and have certain guiding significance.

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Detection of Spontaneous Combustion Areas of Coal Gangue …

The main fire extinguishing methods for spontaneous combustion of coal gangue dumps include the excavation and cooling method, the grouting method, the overlay compaction method, the combustion control method, the low-temperature inert gas method, the water injection method, etc. 30,31 Zhang and Pan developed a coal …

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Study on Thermodynamic Characteristics and Heat Transfer …

Coal fire disaster caused by the spontaneous combustion of coal has always been one of the serious problems that threaten the safety of coal mining. In our …

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A novel high polymer nanocomposite inhibitor for coal …

First, through scanning electron microscope (SEM), energy-dispersive spectrometer (EDS), and proximate analysis experiments, it was found that the coal …

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Detection of Spontaneous Combustion Areas of Coal …

To prevent spontaneous combustion of coal gangue dumps, Tang and Wang developed a type of bentonite-acrylamide superabsorbent hydrogel, which can be used for cooling,

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Heap storage method for preventing spontaneous combustion of coal

The invention relates to a coal gangue hill control technology, in particular to a heap storage method for preventing spontaneous combustion of a coal gangue hill, thereby solving the problems that the existing heap storage way is easy to cause the spontaneous combustion of the free surface and the edge of a hill body, and once one …

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Study on Thermodynamic Characteristics and Heat Transfer Method …

The spontaneous combustion of coal gangue is a complex physical and chemical reaction process, which has been an important subject of human exploration and research for centuries. ... and prevention and control methods of coal gangue mountains at home and abroad, however, the research on the spontaneous combustion …

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Study on Thermodynamic Characteristics and Heat Transfer Method …

Coal fire disaster caused by the spontaneous combustion of coal has always been one of the serious problems that threaten the safety of coal mining. In our study, we first solved the dynamic parameters and mechanical functions of coal gangue using the Achar differential method and Coats-Redfern inte …

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Detection of Spontaneous Combustion Areas of Coal Gangue …

Spontaneous combustion of coal gangue dumps not only releases toxic and harmful gases, polluting the environment, but also leads to explosion accidents and casualties due to improper handling. This paper focuses on delineating the fire area, constructing a comprehensive fire prevention and extinguishing system, and restoring …

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Ambient PM2.5 and Related Health Impacts of …

Coal and coal gangue spontaneous combustion (CGSC) emits large amounts of greenhouse gases, which are of crucial ... METHODS Study Area. Wuhai (39°29′N, 106°42′E) is located in the

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Temperature Distribution Regularity and Dynamic Evolution …

The serious environmental pollution caused by the spontaneous combustion of coal gangue has become a problem which cannot be ignored in the world mining industry. It is urgently necessary to clarify the law of the temperature distribution of spontaneous combustion in gangue dumps and to grasp its future dynamic evolution …

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Numerical Simulation of the Dynamic Change Law of …

Article Recommendations. ABSTRACT: To further study the problem of spontaneous combustion of coal gangue mountains, a multifield coupled simulation model was …

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Low-carbon utilization of coal gangue under the carbon …

The treatment and utilization of coal gangue, one of the main solid wastes produced during coal mining, are of great significance in environmental protection and resource development. In the contemporary context of the carbon neutralization strategy, due to the property of the carbon in coal gangue, it is necessary to be cautious of the …

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Study on Thermodynamic Characteristics and Heat …

spontaneous combustion of coal gangue mountain, based on the research idea of "heat transfer and cooling," the prevention and control methods are carried out focusing

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Fire and Materials

The spontaneous combustion characteristics of coal gangue from the Yangquan mining area were studied through proximate analysis, scanning electron microscope/energy dispersive spectrometer (SEM/EDS), and thermogravimetric analysis. As a result, the coal gangue was found to be prone to spontaneous combustion.

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Opportunities, challenges and modification methods of coal gangue …

The persistent reliance on coal has resulted in the accumulation of substantial coal gangue, a globally recognized problematic solid waste with environmental risks. Given the coal gangue properties and global land degradation severity, the resourceful utilization of coal gangue as soil conditioners is believed to be a universally applicable, cost …

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A novel high polymer nanocomposite inhibitor for coal gangue

In order to prevent spontaneous combustion of coal from the source, based on the study on the mechanism of spontaneous combustion of coal, especially the process of coal to self-ignite and ...

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Study on the secondary oxidation behavior and …

combustion characteristics of CG hills and their prevention by traditional covering method. Keywords Coal gangue · Secondary oxidation · Spontaneous combustion · Reactive functional groups · Kinetic analysis Introduction Coal is the most abundant and low-cost fossil fuel on earth. With the emergence of new technologies such as coal gasi ...

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Isotope radon measurement method to identify spontaneous combustion …

In China alone, coal gangue inventory reaches 4.5–5 Gt, with an annual increase of 0.37–0.55 Gt. Coal gangue is commonly stored as gangue hills and known for the inclination to spontaneous ...

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