MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Gangue spontaneous combustion atmosphere
Study on Pyrolysis and Oxidation Characteristics of
2024年3月15日 To investigate the reaction kinetic parameters of the gangue and the exothermic characteristics of the spontaneous combustion of the influence of the law, this study employs the thermogravimetric method to 2024年2月1日 Based on the experimental results, the thermal effects and the variation characteristics of free radicals in the coexisting spontaneous combustion of coal and coal Study on the thermal reaction characteristics and kinetics of coal 2023年12月8日 The sources of spontaneous combustion in gangue fire areas are mainly located 3–5 m below the flat surface, and the shallow and deep fire areas are interconnected, posing a significant danger These research Detection of Spontaneous Combustion Areas of Coal 2020年1月1日 Oxygen concentration and biomass content are key factors of the combustion of a mixed sample of biomass and coal gangue Herein, we studied the effect of oxygen concentration and biomass(PDF) Combustion characteristics of coal gangue and
Estimate of sulfur, arsenic, mercury, fluorine emissions due to
2016年2月1日 To attain a better understanding of the emission of sulfur, arsenic, mercury, and fluoride due to spontaneous combustion of coal gangue, we collected representative coal 2021年8月25日 The spreading trend of spontaneous combustion was from the fire source (25 m deep) to the outside of the gangue hill (15 m deep) Through analyzing the variations of free Study on Spontaneous Combustion Characteristics of Waste Coal Vegetation heatstress assessment in the reclamation areas of coal gangue dumps is of great significance in controlling spontaneous combustion; through a temperature gradient Study on Spontaneous Combustion Characteristics of Waste Coal 2022年10月13日 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 concentration Numerical Simulation of the Dynamic Change Law of
Laboratorial Investigation and Simulation Test for Spontaneous
2018年12月26日 Using various methods, such as FTIR, TG/DSC, program heating and physical simulation, the change of spontaneous combustion characteristics (SCCs) of coal gangue 2024年11月7日 The spontaneous combustion of coal is a common cause of coal fires, which has been reported around the world Coal gangue is solid waste discharged during coal mining, washing and other production Influence of heat pipe layout parameters on the cooling effect of 2016年2月1日 The finding in this paper may imply that coal gangue spontaneous combustion is the potential sources of sulfur, arsenic, mercury, and fluorine and fluoride released into the atmosphere from coal gangue account more than 10% (sulfur) or even exceed (arsenic and fluoride) those from coal combustion Moreover, emission of mercury Estimate of sulfur, arsenic, mercury, fluorine emissions due to 2022年10月13日 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 concentration Numerical Simulation of the Dynamic Change Law of
Combustion Characteristics of Coal Gangue under an Atmosphere
2014年5月28日 Combustion characteristics of coal gangue under O2/N2 mixtures with different O2 concentrations and coal mine methane (CMM) conditions were investigated by using thermogravimetric analysis (TGA) and tube reactor tests Calculation results for the combustion characteristic parameters show that ignition temperature, burnout temperature, and peak Simulating Heat Stress of Coal Gangue Spontaneous Combustion on Vegetation Using Alfalfa Leaf Water Content Spectral Features as Indicators Remote Sensing 103390/rs Study on Coal Spontaneous Combustion Characteristics under MethaneContaining Atmosphere Combustion Science and Technology 101080/ Study on Spontaneous Combustion Characteristics of Waste Coal Gangue 2014年5月28日 Combustion characteristics of coal gangue under O2/N2 mixtures with different O2 concentrations and coal mine methane (CMM) conditions were investigated by using thermogravimetric analysis (TGA Combustion Characteristics of Coal Gangue under an Atmosphere 2023年12月1日 There have been several industry operations about cofiring of coal gangue and coal in actual power plants, and found that blending coal was favorable to firing of coal gangue in CFB [15, 16]More studies of the combustion of coal gangue and coal blends in air atmosphere were investigated using thermogravimetric analysis (TGA) in the literature [[17], [18], [19]]Air and oxyfuel combustion characteristics of coal gangue and
Environment influences and extinguish technology of spontaneous
2017年10月1日 Although there have been many studies on the control of spontaneous combustion coal piles and gangue hills with gravity heat pipes, these studies have limitations such as indoor, shortterm, and DOI: 1032604/EE2021 ARTICLE A Simplified Model for SO 2 Generation during Spontaneous Combustion of Coal Gangue Ang Li 1, 2, Peng Lei 1, *, Changkun Chen 1 and Tong Xu 1 1 Institute of Disaster Prevention Science and Safety Technology, Central South University, Changsha, , China 2 College of Forestry, Inner Mongolia Agricultural A Simplified Model for SO2 Generation during Spontaneous Combustion 2022年8月9日 Coal gangue spontaneous combustion is a serious catastrophe associated with mining activities Generally, the areas of coal gangue spontaneous combustion are regions of tremendous heat accumulation Mastering the regularity of deep temperature distribution and eliminating internal heat is an effective method to control spontaneous combustion In this Internal Temperature Variation on Spontaneous Combustion of Coal Gangue 2017年10月1日 Local ground surface temperature of fire zone is more than 200℃ Fig 1 Infrared imaging of gangue spontaneous combustion area in Baijigou Coal Mine 22 Coal Gangue Heap spontaneous combustion influence on 2521mining face 2521 working face of Baijigou Coal Mine uses fully mechanized mining methodEnvironment influences and extinguish technology of spontaneous
Laboratorial Investigation and Simulation Test for Spontaneous
2018年12月26日 Request PDF Laboratorial Investigation and Simulation Test for Spontaneous Combustion Characteristics of the Coal Waste under LeanOxygen Atmosphere As a typical solid waste, coal gangue is 2017年4月1日 DOI: 101016/JAPPLTHERMALENG201701083 Corpus ID: ; Combustion properties of coal gangue using thermogravimetry–Fourier transform infrared spectroscopy @article{Deng2017CombustionPO, title={Combustion properties of coal gangue using thermogravimetry–Fourier transform infrared spectroscopy}, author={Jun Deng and Bei Combustion properties of coal gangue using Semantic Scholaron spontaneous combustion gangue After crushing the spontaneous combustion gangue, the gangue below 475 mm was selected, and substituted manufactured sand to prepare masonry mortar in equal quantity The single factor test method was used to select the replacement rate of spontaneous combustion gangue, waterbinder ratio (W/B) and water reducerPreparation and Properties of Masonry Mortar from Spontaneous 2021年4月4日 Coal and coal gangue spontaneous combustion (CGSC) occurs globally, causing significant environmental pollution However, its emissions are poorly quantified and are overlooked in global or regional air pollutant emission inventories in previous studies, resulting in the underestimation of its impacts on climate, environment, and public healthAmbient PM25 and Related Health Impacts of Spontaneous Combustion
Experimental study of thermophysical properties of coal gangue
2020年12月5日 Therefore, the main purposes of this paper were to: (1) acquire the thermal behaviors and combustion properties of CG through TG technique; (2) propose the correlations for thermophysical properties of CG using the experimental data at the initial stage of spontaneous combustion; and (3) analyze correlations and sensitivity analysis of thermal 2021年7月5日 Vegetation heatstress assessment in the reclamation areas of coal gangue dumps is of great significance in controlling spontaneous combustion; through a temperature gradient experiment, we collected leaf spectra and water content data on alfalfa We then obtained the optimal spectral features of appropriate leaf water content indicators through time Simulating Heat Stress of Coal Gangue Spontaneous Combustion 2023年12月8日 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 This paper focuses on delineating the fire area, constructing a comprehensive fire prevention and extinguishing system, and restoring the ecological Detection of Spontaneous Combustion Areas of Coal Gangue Spontaneous combustion of coal gangue not only releases hazardous trace elements (such as, As, Hg, and Pb) that contaminate the soil and water [3 [7, 8] In 2013, approximately 113 Mt sulfur was released to the atmosphere due to the spontaneous combustion of coal gangue [9]A Simplified Model for SO2 Generation during Spontaneous Combustion
Isotope radon measurement method to identify spontaneous combustion
2023年4月5日 ABSTRACT Longterm 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 The key to managing the spontaneous combustion fire of coal gangue hill lies in the accurate measurement of fire source location However, measuring the 2016年2月1日 Request PDF Estimate of sulfur, arsenic, mercury, fluorine emissions due to spontaneous combustion of coal gangue: the instant intensity of Hg ⁰ release under O 2 /CO 2 atmosphere Estimate of sulfur, arsenic, mercury, fluorine emissions due to 2023年5月25日 The spontaneous combustion, pollution, and poor texture of coal gangue could cause vegetation degradation in the surrounding area and leaking of the vegetation carbon sink Carbon emissions caused by coal Lowcarbon utilization of coal gangue under the 2018年12月10日 Five coal gangue samples from the Du'erping Coal Mine in Shanxi, China, subjected to lowtemperature combustion, and their emitted gas samples were collected in situ at the combustion temperatures Distribution of polycyclic aromatic hydrocarbons（PAHs）in coal
Mercury emission from spontaneously ignited coal gangue hill
2016年10月15日 The coal gangue normally contains 15% of residue coal or organic matter [15], which provide opportunity for spontaneous combustion [14], [23]The cause is believed that the oxidation of sulfur in pyrite in coal gangue generates heat and when heat accumulates it will first ignite pyrite at 290 °C and then release large amount of heat and ignite coal eventually [24], ABSTRACT: Coal gangue spontaneous combustion has caused serious environmental and ecological problems To investigate the size, heating rate, and gas atmosphere and explored the mechanism of natural ignition of CG18−22 However, the material composition of the CG is relatively complex, which isStudy on Pyrolysis and Oxidation Characteristics of Coal Gangue Spontaneous combustion of coal gangue not only releases hazardous trace elements (such as, As, Hg, and Pb) that contaminate the soil and water [3–6], but also produces massive harmful gases that pollute the air (such as, SO 2, CO, and NO x)[7,8] In 2013, approximately 113 Mt sulfur was released to the atmosphere due to the spontaneous A Simplified Model for SO2 Generation during Spontaneous Combustion COMBUSTION CHARACTERISTICS OF COAL GANGUE AND BIOMASS UNDER AN O 2 /CO 2 ATMOSPHERE Zhen GONG, Changzhong SONG *, Yuanyuan LI, Ze LI College of Energy and Power Engineering, Inner Mongolia COMBUSTION CHARACTERISTICS OF COAL GANGUE AND
A review on the mechanism, risk evaluation, and prevention of
2017年9月18日 The spontaneous combustion of coal gangue has a “chimney effect” (Deng et al 2012), which usually occurs in the middle of the gangue hill Spontaneous combustion of coal stockpiles occurs at a certain depth, and is characterized by rapid development and threedimensional space expansion2024年2月1日 Spontaneous combustion gangue (SCG) is a type of rock formed during the coal formation process with low carbon content and a harder texture than coal Over 5 billion tons of SCG had been accumulated in China [7, 8]Theoretical model for spontaneous combustion gangue coarse 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 Mechanism of spontaneous combustion of coal 2020年10月29日 Coal gangue (CG) and raw coal (RC) can catch fire due to spontaneous combustion The combustion characteristics, functional groups, and kinetic behaviour of CG and RC were investigated to assess their thermal stability characteristics using thermogravimetric/Fourier transform infrared techniques (TG/FTIR) at heating rates of 10, 20, Experimental and theoretical study on kinetic behaviour of coal gangue
Experimental study and machine learning prediction on
2023年7月15日 Discarded coal gangue occupies land resources and pollutes the atmosphere, soil, and groundwater resources [[3], [4], [5]] Furthermore, spontaneous combustion can occur when an ignition point is reached during the longterm stacking of coal gangue [3, 4]DOI: 101016/jjhazmat2020 Corpus ID: ; Experimental study of thermophysical properties of coal gangue at initial stage of spontaneous combustion @article{Li2020ExperimentalSO, title={Experimental study of thermophysical properties of coal gangue at initial stage of spontaneous combustion}, author={Bei Li and Jiahua Wang and Experimental study of thermophysical properties of coal gangue 2021年6月19日 The variations of free radical and index gas CO in spontaneous combustion of coal gangue under different oxygen concentrations Xiaoyuan Jiang, Xiaoyuan Jiang State Key Laboratory of Coal Resources and Safety Mining, China University of Mining and Technology, Xuzhou, ChinaThe variations of free radical and index gas CO in spontaneous 2024年3月27日 The coal gangue coarseaggregate 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 highperformance concrete This study considered four factors, namely, water–binder (W/B) ratios, nonspontaneous Study of Mechanics and Durability of NonSpontaneous Combustion
Combustion properties of coal gangue using
2017年4月1日 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 Fourier transform infrared spectroscopy The results revealed that the 2020年7月6日 Coal gangue hills are prone to spontaneous combustion, thereby polluting the environment of mining areas such as the soil, groundwater, and atmosphere, and the frequent occurrence of gangue hill collapses, landslides, explosions, and other accidents can even endanger the lives and property of residents To realize the safety management of coal Research on the technology of detection and risk assessment of 2024年2月1日 Air leakage rates are a crucial factor affecting the oxygen supply and heat storage capacity of coal spontaneous combustion (CSC) in goaf in underground coalmines A suitable airflow rates in goaf can significantly promote CSC To accurately reveal the effect of airflow rate on CSC, a bituminous coal was selected, and the thermogravimetric and differential scanning Thermal behaviors and kinetic characteristics of coal spontaneous 2015年2月18日 The reuse of coal gangue for energy recovery is developing rapidly in China, due to its advantage in achieving both economic and environmental benefits Lowquality coal is often added to elevate the calorific value of the fuel In this paper, the combustion characteristics as well as pollutant emissions (SO2 and NO) of coal gangue, lowquality coal and their blends Cocombustion and emission characteristics of coal gangue and