Co-spontaneous combustion of coal and gangue: Thermal …
Once spontaneous combustion occurs in high sulfur gangue hills, a large number of dusts, greenhouse gases such as CO 2 and CH 4 are produced [9]. It may even …
Isotope radon measurement method to identify spontaneous combustion …
Article on Isotope radon measurement method to identify spontaneous combustion regions in coal gangue hills: case study for a coal mine in China, published in International Journal of Coal Preparation and Utilization 44 on by Songtai Wu+5. Read the article Isotope radon measurement method to identify spontaneous combustion …
Study of Mechanics and Durability of Non-Spontaneous Combustion …
Non-spontaneous combustion coal gangue (NCCG) is a newly mined, non-spontaneous combustion, black-gray rock. The most practical and economical method is to use it as concrete aggregate. NCCG as aggregate is an important way to realize bulk utilization of coal gangue and reduce the environmental damage caused by spontaneous combustion of coal ...
Mechanism of spontaneous combustion of coal gangue …
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 ...
Research Status and Development Trend of Coal …
the development process of coal spontaneous combustion theory, reviews the research progress of coal spontaneous combustion monitoring and early warning methods and …
Mechanical properties of concrete with coarse spontaneous combustion
Spontaneous combustion gangue aggregates (SCGAs) have inferior qualities compared with natural aggregates (NAs). The aim of this study is to investigate the effects of the replacement (r SCGA) ratio and particle size distribution of coarse SCGAs on the mechanical properties of concrete, as well as to propose prediction methods for coarse SCGA concrete.
Spontaneous combustion of lithium batteries …
However, lithium battery, the main component of new energy vehicles, has become a power source and an energy storage power source for peak-frequency modulation due to its advantages of high ...
Influence of carbonate-inducing bacteria on desulfurization …
Currently, high sulfur gangue is produced 700–800 million tons a year in China, where the storage has already reached to 6 billion tons [25]. MHSCG occupies the most proportion in coal gangue production [26] ... Study on controlling factors and developing a quantitative assessment model for spontaneous combustion hazard of coal gangue, Case …
The experimental and numerical simulation of interface …
Kanda T, Saito T, Sakata N, et al. (2003) Tensile and anti-spalling properties of direct sprayed ECC. ... Li SW, Zhou M, Zhang LM (2020) Properties of spontaneous combustion coal gangue coarse aggregate and its influence on concrete. ... et al. (2024) Ultra-High-Strength Engineered Cementitious Composites (UHS-ECC) panel reinforced with FRP …
Research on the technology of detection and risk …
and borehole temperature detection technologies, and a coal gangue spontaneous combustion risk assessment method is established, while the gas toxicity and explosion risks of the …
CONTROL SYSTEM OF SPONTANEOUS COMBUSTION …
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 H
Estimate of sulfur, arsenic, mercury, fluorine emissions due …
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 1.01%, 7.98, 0.18, and 365.54 mg/kg, respectively. Amounts of S, As, Hg, …
Advanced orthogonal analysis of multi-factorial interactions
Relevant studies (Bi et al., 2021, Huo et al., 2022) have shown that biomass and coal gangue are complementary in nature, and their co-combustion can compensate for the shortcomings of separate combustion to some extent.Biomass with high volatile content can promote the combustion of coal gangue (Pu et al., 2009), and coal gangue with high ash …
Environment influences and extinguish technology of …
Coal gangue, affected by spontaneous combustion and high temperature, can have the following impact on environment [11-12]. For one thing, spontaneous combustion of Coal Gangue Heaps releases ...
Isotope radon measurement method to identify spontaneous combustion …
Long-term accumulation of coal gangue hill has a high risk of spontaneous combustion, and the toxic and harmful gases emitted by spontaneous combustion seriously pollute the atmosphere.
Research regarding the influence of size on the compressive …
Qin et al. [24] unveiled U 2-Net in 2020, a sophisticated deep learning framework designed for the detection of salient objects.U 2-Net unveils itself as a dual-layer U-shaped network architecture, possessing the capacity to extract intricate details while upholding computational efficiency.In accordance with the visual representation in Fig. 1, U 2-Net …
Improving recovery efficiency for pyrite from high sulfur …
waste (Querol et al., 2008). Recently, gangue pile has deleterious consequences on air pollution, spontaneous combustion and land occupation (Yu et al., 2013). Furthermore, many harmful elements, such as S and Hg, are existed in the gangue leading serious damage to land soil and air conditions (Hao et al., 2013).
CN106823230A
The present invention discloses a kind of red mud base suitable for gangue spontaneous combustion and puts out a fire and anti-pyrophoric material, belongs to fire extinguishing field of material technology, and the material is the slurry that powder is mixed with water, and its ratio of mud 0.5 0.7, the powder is comprised the following raw materials by weight percent：Red …
Study of Mechanics and Durability of Non-Spontaneous Combustion …
The coal gangue coarse-aggregate content in ordinary concrete should not be too large. In order to further improve the utilization rate of coal gangue coarse aggregate, this study used the principle of "strong wrapped weak" to prepare high-performance concrete. This study considered four factors, na …
Assessing Potential Spontaneous Combustion of Coal …
Remote Sens. 2022, 14, 5974 2 of 19 gases are released, which leads to severe atmospheric pollution. In addition, it also causes heavy metal pollution in soil and groundwater [6,7].
Quantum chemistry study on inhibition of coal spontaneous combustion
1. Introduction. Currently, China's attitude towards coal is to limit and reduce its use and promote the development of clean and renewable energy, but the reality is that coal still occupies an important position in the energy structure [1].Large-scale coal mining and utilization will inevitably lead to a series of safety problems, and coal spontaneous combustion just is a very common ...
Influence of soil cover on reducing the environmental impact …
The process of spontaneous combustion of coal and coal waste gobs including emitted gases, condensation of inorganic and organic species in vents, and leachable potential are examined in this study which encompasses a literature review and new experimental data. Furthermore, the potential environmental benefits of cover soil reclamation for reduction of …
Spontaneous Combustion Mechanism and Influencing Factors of Sulfur
With the continuous development of China's economy, the demand for petroleum energy continues to rise. High sulfur crude oil leads to the formation of sulfur corrosion products in petroleum refining equipment and its spontaneous combustion hazard seriously threatens the safety production in the petrochemical field. To explore spontaneous combustion of the …
Estimate of sulfur, arsenic, mercury, fluorine emissions …
Estimate of sulfur, arsenic, mercury, fluorine emissions due to spontaneous combustion of coal gangue: An important part of Chinese emission inventories Environmental Pollution 209, 107-113 DOI: 10.1016/j.envpol.2015.11.026 Citation Report
Detection of Spontaneous Combustion Areas of Coal …
Europe PMC is an archive of life sciences journal literature.
Study on Spontaneous Combustion Characteristics of Waste …
By measuring the free radical parameters of coal gangue at different depths, it was found that the coal gangue at the depth of 2.5 m contained the highest free radical …
Estimate of sulfur, arsenic, mercury, fluorine emissions due …
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 1.01%, 7.98, 0.18, and
Correlation analysis of stage division and gas precipitation …
Coal gangue is produced in the washing and processing process of coal mining. Without treatment, it is dumped naturally to form a gangue mountain. Long-term heat storage leads to spontaneous combustion. Affected by coal quality of coal seam, there are many kinds of coal gangue, among which the washing gangue with high sulfur content has a large tendency of …
Investigation of thermal behavior and hazards quantification …
To explore the thermal behavior and hazard during the spontaneous combustion fires (SCFs) of coal and coal gangue (CG), the characteristics of heat release and thermal transfer during the SCFs of ...
Effect of coalification on spontaneous combustion of coals
The environmental characteristics of coal gangue dumps in Yangquan (Shanxi Province, China) were investigated. The amounts of coal gangue are very high in this coal region given the large coal production. As a result, widespread spontaneous coal gangue combustion gives rise to serious environmental problems.