High sulfur gangue anti-spontaneous combustion measures

A Simplified Model for SO2 Generation during Spontaneous Combustion of

In 2024 approximately Mt sulfur was released to the atmosphere due to the spontaneous combustion of coal gangue More attention is being focused on the harmful gases released from the spontaneous combustion of coal gangue [ 3 10 13 ]

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Influence of air supply on coal spontaneous combustion during Nature

The spontaneous combustion of coal is detrimental to the safe operation of coal mines This phenomenon not only causes wastage of resources and equipment damage but can also lead to gas

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Experimental and theoretical study on kinetic behaviour of coal gangue

CG is a complex mixture with a low calorific value that tends to easily oxidize as it contains sulphide and phosphate substances The mechanism of spontaneous CG combustion differs to that of RC due to its unique microstructure and combustion characteristics

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Spontaneous Combustion Examples Affected Materials and FAQs VEDANTU

The term Spontaneous Combustion refers to the occurrence of fire without the application of heat from an outside source This combustion may take place when combustible matter such as coal or hay is stored in bulk It begins with a slow oxidation process as atmospheric oxidation or bacterial fermentation under conditions not permitting

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CN103473878A Spontaneous combustion monitoring and early warning

The invention discloses a spontaneous combustion monitoring and early warning system for a coal pile gangue hill Multiple temperature sensors are arranged in different layers of the coal pile gangue hill to establish a remote control system temperature data of all layers of the coal pile gangue hill are collected and wirelessly transmitted back to a main control computer to monitor the

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Numerical Simulation of the Dynamic Change Law of Spontaneous

In the spontaneous combustion process of coal gangue mountains the main substance that reacts is carbon which reacts with oxygen in the pores to form CO and CO 2 The exothermic heat of chemical reaction provides the reaction heat source for the temperature field and the generated heat is expressed as 5 where H is the reaction enthalpy

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Effects of organic sulfur on oxidation spontaneous combustion

The high sulfur coking coal samples used in our experiments were extracted from Shuiyu Coal Mine in Shanxi Province To avoid the interference of inorganic sulfur on the process of oxidation spontaneous combustion of coal it was removed from the coal by performing flotation in Taiyuan Coal Preparation Plant

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Ambient PM and Related Health Impacts of Spontaneous Combustion of

gangue is the major solid waste produced during mining and coal washing processes normally containing approximately 15% coal or organic matter 15 Due to its intrinsic low heat value

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Effects of a proline solution cover on the geochemical and

Batch experiments were conducted to comparatively evaluate the inhibition effects and mechanisms of a low concentration 1% proline solution cover on the release of pollutants from high sulfur coal gangue High sulfur coal gangue was continuously immersed in a proline solution and in deionized water as a control treatment for 540 days The results showed that the coal gangue in the control

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Estimate of sulfur arsenic mercury fluorine emissions due to

A rough estimate of the annual amount of sulfur arsenic mercury and fluoride emission from spontaneous combustion of coal gangue in China was determined The weighted mean concentrations of S As Hg and F in coal gangue are % and mg/kg respectively Amounts of S As Hg …

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Materials Free Full Text Study of Mechanical Properties and MDPI

The coal gangue was produced by the Tangshan mining area was tested for non spontaneous combustion The coal gangue powder was calcined in a muff furnace at a constant temperature of 700 °C for 2 h The main chemical compositions of precursors were analyzed by X ray fluorescence spectrometry XRF The median sizes d 50 of the coal gangue and

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Numerical Simulation of the Dynamic Change Law of Spontaneous

To further study the problem of spontaneous combustion of coal gangue mountains a multifield coupled simulation model was established based on the mathematical models of temperature field gas concentration field and seepage velocity field In addition the dynamic development law of these three physical fields in the process of spontaneous combustion is numerically simulated and the

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Characteristics of polycyclic aromatic hydrocarbon release during

It was used to simulate the spontaneous combustion process of coal gangue The product pretreatment part consists of Soxhlet extractor rotary evaporator and chromatography device The Soxhlet extractor was used to the extract aromatic hydrocarbons after spontaneous combustion gas has been adsorbed by the resin in the adsorbed gas device

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What is the effect of sulphur in coal when used in coal Quora

Answer 1 of 3 Your question sounds as if you believe we add sulfur to the coal which is wrong Sulfur to some degree is present in coal naturally Just as coal is the natural product of organic material stored for long periods of time below ground under heat and pressure Some coal has

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PDF Study on Thermodynamic Characteristics and Heat Transfer Method of

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 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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Spontaneous combustion Wikipedia

Spontaneous combustion or spontaneous ignition is a type of combustion which occurs by self heating increase in temperature due to exothermic internal reactions followed by thermal runaway self heating which rapidly accelerates to high temperatures and finally autoignition [1] Contents 1 Cause and ignition 2 Affected materials Confirmed

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Effects of organic sulfur on oxidation spontaneous combustion

Historically research has focused on the occurrence of inorganic sulfur in coal the influence of inorganic sulfur on spontaneous combustion characteristics and the spontaneous combustion period of coal Deng et al 2015b However the role of organic sulfur groups in the process of spontaneous combustion of coal have often been ignored

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XLS

Mechanism of mine acidic waste water treated by high density sludge Yang Xiao Song 1 Shao Li Nan 2 Liu Feng Biao 2 He Xu Wen 1 1 School of Chemical and Environment Engineering China University of Mining and Technology Beijing 100083 China 2 Beijing General Research Institute of Mining and Metallurgy Beijing 100044 China

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XLS

B $ $ $ $ d$ $ $ $ $ $ $ ut issn ҳ λ WOS 000366227100090 1 Zhao Jihui Wang Dongmin

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Spontaneous Combustion Mechanism and Influencing Factors of Sulfur

The spontaneous combustion characteristics of sulfur corrosion products are simulated under working conditions The prevention and control technology can be divided into raw material desulfurization equipment anti corrosion corrosion monitoring and industrial prevention and treatment

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PDF Spontaneous Combustion Mechanism and Influencing Factors of Sulfur

The spontaneous combustion process of FeS is divided into three stages oxidation stage medium speed oxidation stage and accelerated oxidation stage The reaction process with oxygen is divided into physical adsorption chemical adsorption and chemical reaction [8] Figure 1

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Study on the sequestration capacity of fly ash on CO2 and employing the

Request PDF Study on the sequestration capacity of fly ash on CO2 and employing the product to prevent spontaneous combustion of coal An innovative approach of utilizing fly ash waste to

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Spontaneous Combustion Management Earth Systems

At the elevated temperatures induced via the spontaneous combustion of iron sulfides various carbon phases can ignite and burn in the presence of oxygen This process can generate what is regarded as a more conventional fire the production of carbon dioxide and carbon monoxide from the oxidation of carbon

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Spontaneous combustion of sulfur in a steel barrel

2 Sulfur is used in horticulture to lower soil pH There is a bacteria that makes it s living turning S into SO3 and so creates dilute sulfuric acid Normally applied at a rate of 1 2 pounds per square meter to drop soil pH by one pH unit Used it at heavier applications you can drop soil pH down to about 4

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Experimental study of the effects of stacking modes on the spontaneous

The #3 coal seam has been found to demonstrate low spontaneous combustion propensity Meanwhile the #15 coal seam which has a high sulfur content has been observed to show high spontaneous combustion tendencies In the gangue field of the Chengzhuang Coal Preparation of the samples

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Estimate of sulfur arsenic mercury fluorine emissions due to

Weighted mean contents of sulfur arsenic mercury and fluoride in coal gangue are % mg/kg mg/kg and mg/kg respectively which are close to or higher than those in Chinese coal Furthermore we provide a rough estimate of the total annual amount of these elements emissions from spontaneous combustion of coal gangue

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Experimental study of the effects of stacking modes on the spontaneous

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Experimental research on the spontaneous combustion of Yangquan coal

The labeled coal sample H 0 is a high sulfur coal The detection shows that the inorganic sulfur content of the H 0 high sulfur coal accounts for 93% of the total sulfur content

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PDF Sulfur of Mixed Coal and Gangue during Combustion in a CFB Boiler

low‐temperature combustion and long combustion time which is very suitable for burning low‐ calorie coal with a high sulfur content [1] However with the country s stricter requirements for SO2 emissions most CFB units cannot meet the SO2 control requirements specified in the standard [5 6] The existence of sulfur in coal has

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PDF Spontaneous Combustion of Coal Practical Maintenance

4 Spontaneous combustion of coal subtracting the percentages of moisture volatile matter and ash from a sample Since gas to solid combustion reactions are slower than gas to gas reactions high fixed carbon content indicates that the coal will require a long combustion time Calorific Value

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