كواحد من قادة Method for preventing spontaneous combustion of coal gangue الصناعة ، تسعى SBM دائمًا إلى الابتكار والتميز.
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For spontaneous combustion coal gangue, the maximum phosphate adsorption capacity is mg/g (as P), two times larger than new discharged coal gangue, and the best twoparameter isotherm is Langmuir, suggesting that the adsorption process occurs on a
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In the process of the coal gangue hill explosion, a lot of harmful gases can be released, which seriously pollutes the atmospheric environment and is harmful to people''s health; meanwhile, equipments and the surrounding buildings can also be destroyed, which brings huge economic losses and casualties. In addition, social problems caused by coal gangue hills will become a thorny problem for
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· 1. Introduction. Coal gangue (CG) is a mixture of organic and inorganic compounds and mineral materials, that are fused together with coal deposits during the coal formation process .CG is a complex industrial solid waste generated from the coal mining and washing process .Because of longterm stacking, spontaneous combustion frequently occurs in coal and carbonaceous materials ; this
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Conventionally, method for controlling spontaneous combustion of coal gangue is to inhibit the oxidation and selfheating of gangue by utilizing soil covering to isolate the gangue from oxygen. Using various methods, such as FTIR, TG/DSC, program heating and physical simulation, the change of spontaneous combustion characteristics (SCCs) of coal gangue under 3–% O 2 was explored.
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The temperature rise rate in oxidation process of gangue and coal specimen from Jingang Coal Mine has been investigated and the sulphur configuration in various kinds of gangue has been quantitatively analyzed to explore their spontaneous combustion mechanism. It is proved that the content of FeS 2 is very high in gangue of Jingang coal mine.
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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 spontaneous combustion is approximately 8.
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· Coal gangue is one of the largest industrial residues. It has high ash content, low carbonaceous content, and heating value. Meanwhile, it has some trace elements. Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land. Now, coal gangue utilization is a matter of great concern
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Coal gangue spontaneous combustion produces toxic and harmful gases. This research aims to study a new type of polymer nanocomposite inhibitor to prevent and control coal gangue spontaneous
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Using crushed coal gangue from coal mining and washing as aggregates (known as coal gangue aggregates, CGAs) to manufacture new concrete materials can reduce the consumption of natural sources and reduce landfill space, .CGAs are generally classified into two categories,, rock coal gangue aggregates (RCGAs) and spontaneouscombustion coal gangue aggregates (SCGAs), in
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The coal gangue, originating from coal mining and washing is a kind of solid waste material. Some of them spontaneously combust, resulting in severe pollution for the ecological environment of the mining area. The personal safety is subject to this paper, the conditions and characteristics are discussed for the spontaneous combustion of coal gangue dump.
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· However, the fire risks in these gangue hills have never been successfully eliminated. Therefore, given the aforementioned situations, it has become necessary to study and identify relatively reasonable stacking methods in order to prevent spontaneous combustion in stacked coal gangue hills and control potential fire risks. 3. Experimental
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The invention relates to a method for preventing spontaneous combustion of a coal pile by adopting an organic composite flame retardant. The flame retardant comprises the components by weight: parts of a bituminous coal powder with the particle size of less than 3 mm, parts of crude oil, and 23 parts of an auxiliary material; raw materials are mixed and stirred to form a
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Spontaneous combustion in coal gangue dumps leads to pollution in the environment and damages ecosystem and human health. Mine operators usually fail to take effective measures against spontaneous
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· Based on a lot of practices and experiments on preventing and controlling coal seam fire in recent years and application of the basic technologies and some innovative methods, a systematic and complete procedure to control and extinguish the spontaneous combustion of coal seam fire are formatted and proposed as five steps including detection, prevention, sealing, injection and pressure
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A composition for the prevention of spontaneous combustion of coal is described which is comprised of at least about 2 percent of polyethylene oxide and the balance water. Also described is a method for reducing the spontaneous combustion tendency of coal by contacting coal with the above composition and then drying the coal.
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Journal of Biomimetics, Biomaterials and Biomedical Engineering Materials Science. Defect and Diffusion Forum
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useful in preventing spontaneous combustion of coal in the tunnel fall of ground. It serves as a new method for preventing such phenomenon in extrathick coal seam . Keywords: Spontaneous combustion of coal, tunnel fall of ground, threephase , application _____ 1.
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The invention relates to a method for comprehensively treating the ecological environment of a coal gangue hill, which belongs to the field of mineral waste treatment and ecological environment restoration. The method mainly solves the problems of fire extinction, fire prevention and vegetation construction of the coal gangue hill. The method comprises the steps: the onsite reconnaissance of
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How to prevent spontaneous combustion: When sanding floors, especially refinished floors, make sure to empty the bags of sawdust often. Don''t operate your sander when the dust bag is more than halfway full, and never leave the sander with dust in the bag at the jobsite, in your shop, or in your vehicle.
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· Spontaneous combustion of coal is one of the major hazards threatening production safety during longwall mining. Mininginduced voids, which provide passages for air leakage, are the key factor triggering spontaneous combustion of coal in longwall goafs. In this study, a comprehensive method, which combined pressure balance, grouting injection, and filling fissures, was proposed to prevent
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