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 give rise to …
Influence of carbonate-inducing bacteria on desulfurization …
Medium and high sulfur coal gangue (MHSCG) presents challenges for safe application on civil engineering building materials due to the high content of unstable pyrite, of which the acidic oxidation products are against alkali cementitious materials.For better utilization of MHSCG, in this research, the carbonate-inducing bacterium Sporosarcina Pasteurii with its …
Study on Natural Characteristics of Coal Gangue Oxidation …
This study investigates the effects of moisture on the oxidation and spontaneous combustion of coal gangue in high-sulfur coal gangue from the Qipanjing area of Inner Mongolia. Initially, coal gangue samples were subjected to soaking and air-drying treatments at different moisture contents.
Study on Spontaneous Combustion Characteristics of Waste 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.
Estimate of sulfur, arsenic, mercury, fluorine emissions …
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, and F emissions from coal gangue spontaneous combustion show approximately 1.13 Mt, and 246, 45, and 63,298 tons in 2013, respectively.
A novel high polymer nanocomposite inhibitor for coal gangue …
In fire extinguishing process, loess isolation is used to prevent spontaneous combustion area from enlarging, loess cover reduces the air leakage in the spontaneous combustion area of Coal Gangue ...
A novel dry beneficiation technology for pyrite recovery from high …
DOI: 10.1016/J.JCLEPRO.2017.11.162 Corpus ID: 158282432; A novel dry beneficiation technology for pyrite recovery from high sulfur gangue @article{Duan2018AND, title={A novel dry beneficiation technology for pyrite recovery from high sulfur gangue}, author={Chenlong Duan and Chenyang Zhou and L. Dong and Yuemin Zhao and Qingxia Liu and Qingxia Liu}, …
Low-carbon utilization of coal gangue under the …
Hou analyzed the spontaneous combustion theory and tendency of coal gangue and found that the internal threshold conditions for the spontaneous combustion tendency of coal gangue backfill is a total sulfur …
Research on the technology of detection and risk …
To realize the safety management of coal gangue spontaneous combustion and evaluate its present risks, this paper selects the Dongzhou Kiln gangue hill in Zuoyun County, …
Influence of heat pipe layout parameters on the cooling …
When the insertion spacing of HPs is 3 m and the insertion depth of HPs is 7 m, the spontaneous combustion volume and the highest temperature point respectively decrease by 11755m 3 and 302.57...
Experimental study of the effects of stacking modes on the spontaneous …
The #3 and #15 coal seams are the main minable coal seams. 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
Study on controlling factors and developing a quantitative …
Developing a quantitative hazard assessment model for spontaneous coal gangue combustion is imperative to ensuring the safety of coal mining operations. In this study, eight types of coal gangue from different coalfields were used to determine the controlling factors for …
Estimate of sulfur, arsenic, mercury, fluorine emissions due …
Spontaneous combustion of coal causes coal resource wastage, environmental pollution, and health and safety issues. 1−5 The total amount of sulfur produced during the spontaneous combustion of ...
Influence of heat pipe layout parameters on the cooling …
When the insertion spacing of HPs is 3 m and the insertion depth of HPs is 7 m, the spontaneous combustion volume and the highest temperature point respectively decrease by …
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].
Ambient PM2.5 and Related Health Impacts of …
gas, and trace elements emitted during CGSC could cause a series of human health problems.20−22 Among all air pollutants, fine particulate matter (PM 2.5) is the most harmful pollutant in
Detection of Spontaneous Combustion Areas of Coal …
It is estimated that China has more than 5000 coal gangue dumps, of which approximately 1700 have combusted spontaneously, covering an area of about 1500 km 2. 3,4 …
Preparation of ultra-high performance concrete using spontaneous …
Coal is an important fuel in modern society. As the world's largest coal producer, China's annual coal production is about 3693 million tons (2019), accounting for 46 % of global coal production [30].Coal gangue (CG) is a residual material that is obtained from the extraction and purification of coal, constituting around 15 %–20 % of the overall coal output [31], [32].
A Simplified Model for SO2 Generation during Spontaneous Combustion …
In 2013, approximately 1.13 Mt sulfur was released to the atmosphere due to the spontaneous combustion of coal gangue [9]. More attention is being focused on the harmful gases released from the spontaneous combustion of coal gangue [3, 10 – 13].
Experimental investigation of temperature distribution and spontaneous …
When the temperature reaches the ignition points, the residual coal and coal gangue in the coal pile spontaneously combust (Querol et al. 2011).
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 …
Research on the technology of detection and risk assessment of …
To realize the safety management of coal gangue spontaneous combustion and evaluate its present risks, this paper selects the Dongzhou Kiln gangue hill in Zuoyun County, Datong City, China, as the research object to conduct a risk assessment study. The Dongzhou gangue hill fire area is relatively large, with a total area of 183,039 m 2.
Study on Natural Characteristics of Coal Gangue Oxidation …
This study investigates the effects of moisture on the oxidation and spontaneous combustion of coal gangue in high-sulfur coal gangue from the Qipanjing area of Inner …
Influence of soil cover on reducing the environmental impact …
Research Highlights Spontaneous combustion of coal and coal waste gobs is an important source of atmospheric pollutants. Condensation pollutants occur in vents and subsequently leaching of organic and inorganic pollutants takes place. Soil cover on coal mine waste gobs is demonstrated to drastically reduce both air and water pollutions. A literature …
Estimate of sulfur, arsenic, mercury, fluorine emissions due to
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, and F emissions from coal …
A novel high polymer nanocomposite inhibitor for coal gangue …
As a result, PAM/MMT could suppress coal gangue oxidative spontaneous combustion, so as to reduce environmental problems caused by coal gangue spontaneous combustion. Furthermore, a spraying process is designed for the application of the inhibitor.
Detection of Spontaneous Combustion Areas of Coal Gangue …
It is estimated that China has more than 5000 coal gangue dumps, of which approximately 1700 have combusted spontaneously, covering an area of about 1500 km 2. 3,4 Coal gangue dumps are prone to spontaneous combustion due …
Detection of Spontaneous Combustion Areas of …
Proximate analyzer, thermogravimetry, and Fourier transform infrared spectroscopy are used to study the changes in free radicals and fixed carbon contents of coal gangue spontaneous combustion under different …
Effects of Setaria viridis on heavy metal enrichment tolerance …
Coal gangue with a sulfur content of more than 2% is referred to as high-sulfur gangue (Wang et al., 2023a, Wang et al., 2023b). High-sulfur gangue is highly polluting because of its high concentration of iron sulfide minerals. With the increase in energy consumption, coal gangue has become a typical industrial solid waste worldwide.
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 give rise to geological disasters such as explosion and landslide [10] .
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