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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.
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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.
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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.
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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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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 …
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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 ...
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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}, …
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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 …
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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 …
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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
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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.
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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 …
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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...
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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.
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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 …
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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
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The resulting large accumulations of mining waste are susceptible to spontaneous combustion. Three coal gangue dumps in the Datong region subjected to a range of reclamation conditions were investigated to assess the influence on coal fires. ..., therefore, focuses on the deeper Permian and high-sulfur coal deposits, which call for special and ...
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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 …
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Generally speaking, coal gangue normally contains pyrite, and approximately 15% residue coal or other organics, which provide the preconditions for spontaneous combustion (Finkelman, 2004).As a type of artificial structure, the coal gangue hills often have large internal voids due to loose and chaotic piling methods (Hao and Zhang, 1992).It has been found that …
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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 …
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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 …
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Spontaneous combustion of coal gangue (CG) hills has caused varieties of secondary disasters that seriously endanger the ecological environment of the world. ... The influence of water immersion on the spontaneous combustion characteristics of anthracite with high concentrations of sulfur-bearing minerals was studied using simultaneous ...
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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, …
WhatsApp: +86 18221755073
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 …
WhatsApp: +86 18221755073
Coal gangue is a byproduct of coal mining, constituting approximately 15 % of the total raw coal output [1].Over the past few decades, coal has become the primary energy source in China, resulting in the accumulation of 5 billion tons of coal gangue, with an additional 300 to 350 million tons generated annually [1].Spontaneous combustion coal gangue is a widely …
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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].
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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 …
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A No vel High Polymer Nanocomposite Inhib itor for Coal Gangue Spontaneous Combustion Prevention : A Case Study of Y angquan Coal Gangue in China. Fire Ma ter. 44, 953–965 (2020).
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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 content of greater than …
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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 …
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