coal gangue spontaneous

Photo Essay: Dirty, Dangerous Work Scrabbling For a Living ...

The spontaneous combustion of coal gangue not only releases a lot of heat, but also gases such as carbon monoxide, leaving the collectors short of breath. Some of the gangue piles are also unstable and at risk of collapse.


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Coal Gangue Is Used for Making Sand – Market Industry Reports

Coal gangue is a solid waste discharged during the coal mining and coal washing process. It is a kind of black-gray rock with low carbon content and harder than coal in the process of coal formation.


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The inducement of coal spontaneous combustion disaster and ...

May 18, 2018 · The coal spontaneous combustion incident in Wangtaipu mine. The production capacity in Wangtaipu is 2.1 million tons per year and the mining method is the use of level panel in inclined shaft. Level two had been mined in Nos. 9 and 15 coal seams which is designed for -seam mining joint arrangement.


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Photo Essay: Dirty, Dangerous Work Scrabbling For a Living ...

The spontaneous combustion of coal gangue not only releases a lot of heat, but also gases such as carbon monoxide, leaving the collectors short of breath. Some of the gangue piles are also unstable and at risk of collapse.


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Study of the technology of heat pipe on prevention wildfire ...

to test the heat transfer performance of HP for preventing and extinguishing the spontaneous combustion of coal gangue. Based on the heat transfer theory, the resistance network of the coal-HP heat removal system was analyzed for studying the cooling effect of HP. The experimental results show that the HP can accelerate the heat release in

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THE THERMAL TRANSMISSION BEHAVIOR ANALYSIS OF TWO COAL ...

behavior of the two coal gangue samples when temperature was increased from 300 °C to 1000 °C. The coal gangue samples lost hydration water at a temperature of up to 500°C, and the layer structure collapsed completely as the temperature increased. The typical bands in the FT-IR spectra of the two coal gangue samples


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How a Roller Crusher Crush Coal Gangue - Fote Machinery(FTM)

Generally, the comprehensive discharge of coal gangue accounts for 15% to 20% of the original coal production. Long-term accumulation of coal gangue not only occupies a large amount of land, but also causes atmospheric and groundwater contamination due to spontaneous .

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Distribution of Polycyclic Aromatic Hydrocarbons in Coal ...

Five coal gangue samples from the Duerping Coal Mine in Shanxi, China, subjected to low-temperature combustion and their emitted gas samples were collected in situ at the combustion temperatures of 23, 33, 49, 57, and 70 °C. The concentrations of 16 polycyclic aromatic hydrocarbons (PAHs) in these samples were determined by high-performance liquid chromatography; these concentrations ...

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INFRARED THERMOGRAPHY MONITORING AND EARLY WARNING .

Spontaneous combustion of mine rock dump (coal gangue pile) has posed a constant threat to the safety of mine areas by polluting its atmosphere, water, soil and even the threat of unpredictable explosion.


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Investigation of phosphate removal from aqueous solution ...

For spontaneous combustion coal gangue, the maximum phosphate adsorption capacity is 7.079 mg/g (as P), two times larger than new discharged coal gangue, and the best two-parameter isotherm is Langmuir, suggesting that the adsorption process occurs on a .


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Monitoring Spontaneous Combustion of Mine Rock Dump .

Spontaneous combustion of mine rock dump (coal gangue pile) has posed a constant threat to the safety of mine areas by polluting its atmosphere, water, soil and even the threat of unpredictable explosion. Traditional monitoring techniques like utilizing


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CHANGES IN SOIL FACTORS AT EARLY STAGE OF .

spontaneous herbal recovery. In this study, the five-year dynamics of the plant-soil system were monitored in the coal gangue yard at Sima Coal Mine of Lu'an Group, Shan'xi, China, from 2009 to 2013.

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Combustion properties of coal gangue using ...

This study investigated the combustion properties of coal gangue (CG) from the Gongwusu coal mine in northern China. Three CG samples collected from various parts of the spontaneous combustion gangue dump were evaluated using a proximate analyzer, thermogravimetry, and .

Evolution characteristics of spontaneous combustion in ...

coal mining technology, especially the coal spontaneous combustion mechanism, scholars have conducted consider-able studies.23-29 For a long time, most scholars have studied the "three zones of spontaneous combustion" in association with a "U" ventilation system.30 Generally, the gas pressure


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coal gangue powder processing equipment - YouTube

Nov 06, 2013 · coal gangue powder processing equipment XSM has been serving the aggregate crushing & grinding industry for over 12 years, it is...

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Spontaneous combustion in a sentence (esp. good sentence ...

The coal is dug, ground subsidence, gangue spontaneous combustion, ecological damage. 10. The spontaneous combustion of coal seam endangers the safe production.


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Experimental Study on Greenhouse Gas Emissions Caused by ...

ABSTRACT: There are large areas of spontaneous coal combustion in northern and northwestern China. The quantification of greenhouse gas (GHG) emissions resulting from spontaneous coal combustion is an important step toward determining proper management practices to .

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Investigation of phosphate removal from aqueous solution ...

For spontaneous combustion coal gangue, the maximum phosphate adsorption capacity is 7.079 mg/g (as P), two times larger than new discharged coal gangue, and the best two-parameter isotherm is Langmuir, suggesting that the adsorption process occurs on a .

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What Are The Physical Properties Of Coal Gangue

the spontaneous combustion of the coal gangue polluted the soil in the mining area which affects agricultural production and people's lives as well (Peng, 2009). A considerable change occurs to the physical and chemical properties of the soil due to mining activities.


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Quantitative Inversion of Fixed Carbon Content in Coal ...

within the large coal gangue in the lower part, and they allow for the passage of oxygen; and the small coal gangue in the middle and upper parts is weathered into granular gangue, which acts as a closed air system to prevent heat from being emitted. The spontaneous combustion of coal gangue continuously accumulates heat [6].

  • Author: Liang Song, Shanjun Liu, Wenwen Li
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EH-93-4 The Fire Below: Spontaneous Combustion in Coal ...

THE FIRE BELOW: SPONTANEOUS COMBUSTION IN COAL-----How Coal Self-Ignites The coal's temperature begins to climb above ambient. At about 150-300 degrees F, it begins to give off minute, but measurable, quantities of gas--aerosols, hydrogen, and CO(2)--precursors of combustion. As the temperature increases further--at about 600-700 degrees F ...

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Combustion Properties of Coal Gangue Using ...

Conventionally, method for controlling spontaneous combustion of coal gangue is to inhibit the oxidation and self-heating of gangue by utilizing soil covering to isolate the gangue from oxygen.

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Investment prospect of coal gangue processing and its ...

Coal gangue to be pile up will not only increase the pressure of the land, affecting the ecological environment, leaching of waste water will pollute the surrounding soil and groundwater, and coal gangue contains a certain amount of combustible material which will spontaneous combustion under appropriate conditions, and emissions of sulfur ...


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Temperature Characteristics of Spontaneous Coal .

from coal waste pollutes the soil and water in the vicinity and this has become the most serious source of pollution in the mining area, endangering the ecological safety of the mining area and human health. Sometimes, spontaneous combustion of coal waste pile causes collapses, mud-rock flows and other geological disasters (Xu et al, 2001; Xu, 2006).

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Analysis on Explosion Characteristics of Coal Gangue Hills

Therefore, the influencing factors on the coal gangue hill explosion, the explosion characteristics and laws, and the spontaneous combustion process of the coal gangue hill are analyzed; the coal gangue hill explosion are discussed from the arch shell theory, the bottom air leakage and oxygen supply, rainfall, detonating gas explosion, and chain reaction; the conditions, influencing factors and characteristics of .


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Monitoring Spontaneous Combustion of Mine Rock Dump .

Spontaneous combustion of mine rock dump (coal gangue pile) has posed a constant threat to the safety of mine areas by polluting its atmosphere, water, soil and even the threat of unpredictable explosion.


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CN101011009A - Greening method of self-ignition coal ...

Gangue hill open dumps prone to weathering, under the action of wind and rain, weathered particles will float and flow, atmospheric pollution and soil environment in the vicinity, with storm water environment; pyrite gangue containing sulfur, such as pulverized coal, gangue easily cause spontaneous combustion, thereby releasing a large amount of poisonous gases such as SO2, CO, H2S and other serious .

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Control system of spontaneous combustion in coal gangue ...

The spontaneous combustion in coal gangue dumps was controlled through a case study at Yuquan coal mine. Results show that the concentrations of index gases CO and H2S in the coal gangue dumps of Yuquan coal mine are below 24 and 6,6 ppm, and the internal temperature is below 70 °C, The cost per square meter of the control system of ...


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Ecological Restoration of Abandoned Mine Land in China

Dec 01, 2012 · Duan and Zhao studied the salt condition of the surface weathered material of coal waste piles and the results indicated that the salt content of the weathered material was high and the pH value was low with the spontaneous combustion of coal gangue, which was difficult to meet the site conditions for plant growth; the weathered material ...


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Turn Waste Into Treasure: Clirik Coal Gangue Grinding Mill

Coal gangue is piled up in large quantities, which not only occupies the land, but also the leaching water of the gangue will pollute the surrounding soil and groundwater, and the coal gangue will emit harmful gas to pollute the air after spontaneous combustion under certain conditions.

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