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
Coal gangue and coal are burned together
Cospontaneous combustion of coal and gangue: Thermal
2022年5月1日 In this paper, the microstructure of coal and gangue were tested and the thermal behavior during the cospontaneous combustion process of coal and gangue with different 2024年2月1日 Based on the source and distribution of coal gangue (CG) in China, this study introduces the current situation of CG storage in China and the problems existing in the Representative coal gangue in China: Physical and chemical 2024年9月7日 The direct application of raw coal gangue faces challenges of low active beneficial ingredients, inadequate water and fertilizer retention, presence of potentially toxic Opportunities, challenges and modification methods of coal 2015年2月18日 Results showed that compared with pure coal gangue, cocombustion with lowquality coal lowered ignition and burnout temperature, but only slightly decreased the Cocombustion and emission characteristics of coal gangue and
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Study on Pyrolysis and Oxidation Characteristics of
2024年3月15日 Coal gangue spontaneous combustion has caused serious environmental and ecological problems To investigate the reaction kinetic parameters of the gangue and the exothermic characteristics of the s2016年11月1日 Coal gangue has accumulated huge coal gangue piles, occupying lots of land as well as having striking influence on the neighboring environmental effects This paper seeks a Environmental effects of coal gangue and its utilization2022年9月15日 Using coal gangue in geopolymer preparation can effectively reduce cement output and meet the sustainability requirements In this paper, the physical and chemical characteristics, including the heavy metal content, of Activation Mechanism of Coal Gangue and Its Impact 2023年12月8日 Coal gangue hills are prone to spontaneous combustion, thereby polluting the environment of mining areas such as the soil, groundwater, and atm, and the frequent occurrence of gangue hill collapses, landslides, Detection of Spontaneous Combustion Areas of Coal
Study on Preparation of CalciumBased Modified Coal
2024年5月7日 Efficient and thorough treatment of dye wastewater is essential to achieve ecological harmony In this study, a new type of calciumbased modified coal gangue (CaCG) was prepared by using solid waste coal gangue as raw When the coal gangue burned at 750 °C is mixed into portland cement, the content of calcium hydroxide in paste is significantly reduced, while the contents of hydrated calcium silicate and hydrated calcium aluminate are increased accordingly, Pozzolanic activity of burned coal gangue and its effects on 2015年6月1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 Cocombustion and emission characteristics of coal gangue and 2023年2月1日 gangue together with selfignited coal gangue 60 or nonspontaneous combustion coal gangue 77 as cement aggregate were used to obtain an ecofriendly lowcarbon pervious concreteFabrication and application of porous materials made from coal gangue
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Study on the Occurrence of Gallium in GalliumEnriched Coal Gangue
2024年7月19日 The occurrence of gallium in galliumenriched coal gangue and the migration of gallium during thermal treatment were systematically studied The phase and chemical composition of galliumenriched coal gangue were determined, and the gallium content was determined by inductively coupled plasma mass spectrometer (ICPMS) The mineralogical Abstract: The pozzolanie activity of coal gangue burned at different burning temperatures was investigat ed The burned coal gangue was mixed with portland cement in different proportions(20%60% ) The pozzolan ic activit3 of coal gangue burned and the h?dration products were examined, the compressive strengths of the pastesPozzolanic Activity of Burned Coal Gangue SpringerChina, coal is the main source of energy Gangue is a solid waste generated during the mining and washing of coal [2], which contains high amounts of ash and low calorific value and is difficult to burn [3, 4] Hundreds of millions of tons of coal gangue are discharged every year [5], resulting inExperimental study on mixed pyrolysis of biomass and coal gangue2023年7月1日 Coal gangue from Hebei province was adopted in this study The coal gangue was firstly crushed by applying a crusher The coal gangue powers passed through a 200mesh (80 μm) sieve were defined as uncalcined coal gangue (G) [14], which was used to prepare geopolymersS95grade ground granulated blast furnace slag (S) and Fgrade fly ash (A) were Investigation of uncalcined coal gangue together with ground
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Coal Gangue: Composition, Processing, Use And Recycling
2024年1月18日 Coal: One of the main components of coal gangue is coal itself, including different types of coal, such as stone coal, lignite, anthracite, etc Rock: Coal gangue usually contains a large amount of rockThese rocks may be rock layers above and below the coal seam or other stones in the deposit Pyrite: As you mentioned, coal gangue may contain pyrite, a 2024年10月25日 The comprehensive utilization of basic oxygen furnace (BOF) slag and coal gangue has always been a significant research interest in alleviating environmental pollution and solid waste, owing to their substantial content of exploitable materials This research investigates the impact of temperature and the ratio of coal gangue incorporation on the modification of Synergistic Utilization of Basic Oxygen Furnace Slag and Coal Gangue 2023年11月6日 Traditional Coal Gangue Separation Process and Equipment Water washing and dry coal preparation are the main parts of coal preparation Spiral separation, jigging, heavy medium separation, and other processes are A review of intelligent coal gangue separation 2022年11月25日 China’s total coal production in 2021 exceeded 413 billion tons, 52% of the world’s total Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on the ground Underground Disposal of Coal Gangue Backfill in
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Research Progress on Comprehensive Utilization of
Coal gangue is one of the largest mine solid wastes in China, and its discharge and stockpiling have caused resource waste, environmental pollution and other problems Starting from the resource characteristics of coal gangue, this paper 2021年12月4日 Coal gangue is a kind of industrial waste in the coal mine preparation process Compared to conventional manual or machinebased separation technology, visionbased methods and robotic grasping Coal and Gangue Recognition Method Based on Local Texture In coalrelated research, NIRS together with different ana lytical modeling strategies has been applied to analyze coal properties such as moisture, fixed carbon, and volatile matNondestructive Identification of Coal and Gangue via Near 2019年12月1日 Coal gangue has a wide range of applications in building material industry, energy industry, agriculture and other emerging industries, which are presented in Fig 3 The recycle of coal gangue is considered as an ecofriendly alternative which not only addresses its disposal, but also contributes to low material costs and sustainable use ofComprehensive utilization and environmental risks of coal gangue: A
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(PDF) Nondestructive Identification of Coal and Gangue via
PDF On Apr 16, 2020, Liang Zou and others published Nondestructive Identification of Coal and Gangue via NearInfrared Spectroscopy Based on Improved Broad Learning Find, read and cite all the 2022年12月1日 Coal gangue, a waste produced during coal mining, has been regarded as the largest source of industrial waste in China It is estimated that the production of 1 t coal generates 01–025 t coal gangue [1], and the total stockpile of coal gangue exceeds 6 billion tons in China [2], [3]The coal gangue not only occupies agricultural land in large areas but triggers Exploring calcined coal gangue fines as the total substitute of fly 2023年2月26日 The recognition of coal and gangue is the premise and foundation of coal gangue intelligent sorting Adaptive boosting (AdaBoost) algorithmbased coal gangue identification has not been studied in depth This paper proposed a coal gangue image recognition algorithm and a strong classifier based on the AdaBoost algorithm with a genetic Coal Gangue Recognition during Coal Preparation Using an 2022年9月15日 Coal gangue is one of the industrial solid wastes that may harm the human body through the ecosystem for a long time Using coal gangue in geopolymer preparation can effectively reduce cement output and meet the sustainability requirements In this paper, the physical and chemical characteristics, including the heavy metal content, of coal gangue from Activation Mechanism of Coal Gangue and Its Impact on the
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YOLOv4TinyBased Coal Gangue Image Recognition
Nowadays, most of the deep learning coal gangue identification methods need to be performed on highperformance CPU or GPU hardware devices, which are inconvenient to use in complex underground coal mine environments due to 2024年2月15日 To address the lightweight and realtime issues of coal sorting detection, an intelligent detection method for coal and gangue, Ourv8, was proposed based on improved YOLOv8 Images of coal and gangue with Detection of Coal and Gangue Based on Improved 2023年12月1日 The accumulation of coal gangue not only occupies a vast amount of land but also poses a serious threat to the ecological environment [19, 20] However, coal gangue contains abundant aluminosilicate components, such as Al 2 O 3 and SiO 2, which have the potential to be used as raw materials for alkaliactivated cementitious materials [[21], [22 Alkaliactivated geopolymer materials prepared from coal gangue 2024年4月1日 Coal gangue power generation is presently the primary method of comprehensively utilizing coal gangue to achieve economic profits [157] Coal gangue is composed of carbon and other flammable substances, which can produce heat when burned This heat can be utilized for the purposes of power generation and heating [158]Environmental hazards and comprehensive utilization of solid waste coal
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(PDF) Power Generation from Coal Gangue in China
2012年7月2日 PDF This paper provides an overview on the current status of power generation in China using coal gangue bed combustion had been adopted in China to burn low qualit y fuels like gangueCalcined coal gangue: The coal gangue from the Junger mine in the Inner Mongolia Autonomous Prefecture was crushed and ground until it could pass through the 80 μm square hole sieve The coalProperties and Hydration Mechanism of Cementitious Materials 2023年11月15日 Coal gangue covers sulfur elements and heavy metal elements (eg, Pb, Cr, and Hg) [1] If coal gangue is mixed with coal and burned together, the utilization rate of raw coal will be reduced, and toxic gases (eg, CO, SO 2, and H 2 S) will be released, thus seriously jeopardizing human health and the ecological environment [2], [3] ] Accordingly, sorting the Multiscale coal and gangue detection in dense state based on 2024年11月1日 Coal gangue, a byproduct rock with low carbon content cogenerated with the coal seam during the coal formation process, is a solid waste that needs to be discharged during coal mining and washing Its main components are SiO 2 and Al 2 O 3 , which not only does its accumulation take up space, but also can selfignite, producing CO and polluting the air, and Classification of coal gangue and identification of coal type based
The Sustainable Utilization of Coal Gangue in Geotechnical and
2022年4月6日 “Effect of coal gangue particle size on its leaching characteristics” In GeoCongress 2020: GeoSystems, Sustainability, Geoenvironmental Engineering, and Unsaturated Soil Mechanics, Geotechnical Special Publication 319, edited by J P Hambleton, R Makhnenko, and A S Budge, 107–114The enhanced extraction of rare earth elements from coal gangue and coal fly 02 gram of the involved coal waste samples was weighed and calcined in the muffle furnace 800 ℃ for 60 mins to burned off the carbon Our growing team is made up of researchers and industry professionals working together to solve the most critical The enhanced extraction of rare earth elements from coal gangue 2024年6月17日 In order to effectively mitigate the oxidation reactions of coal (RC) and gangue (RG) at low temperatures, a comprehensive study was conducted on the mineral composition, structural characteristics, and oxidation behaviors of RC and RG from the same coal seam Additionally, the thermodynamic attributes of their oxidation processes were evaluated The Structural characteristics and lowtemperature oxidation Springer2022年9月30日 Coal gangue (CG) is a type of industrial solid waste produced by the process of coal excavation and separation 1,2,3 Generally, one ton of CG is discarded for every 10 tons of produced coal 4 , 5 Preparation of coal gangue ceramsite highstrength concrete and
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Lowcarbon utilization of coal gangue under the
2023年5月25日 Coal gangue, produced during coal mining and processing [1, 2], is one of the most extensively produced solid wastes in China [1, 3], accounting for approximately 10%‒20% of raw coal production []The 2020年2月20日 A large amount of coal gangue buildup may be a potential fire hazard associated with the heat released by microorganisms accumulating to the point of spontaneous combustion in the presence of unburned coal, pyrite (FeS 2) and oxygenCoal gangue is likely to cause largescale fire and blast disasters, and produce a significant amount of toxic emissions Reactivity activation of waste coal gangue and its impact on the 2024年3月15日 Coal gangue spontaneous combustion has caused serious environmental and ecological problems 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 explore the characteristic parameters of the Study on Pyrolysis and Oxidation Characteristics of Coal Gangue 2022年6月26日 Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications Producing concrete with coal gangue aggregate is one of the green sustainable development requirements This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue aggregate on Using Chinese Coal Gangue as an Ecological Aggregate and Its
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Extraction of SiO2 and Al2O3 from coal gangue activated by
2019年10月1日 In this work, a novel method is introduced to activate coal gangue (CG) for extraction of Si and Al species The activation experiments were carried out using a stainless steel tube reactor (17 mL 2016年6月8日 Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on the ground surface as waste heaps, it occupies large areas of land and cause Utilization of coal gangue for the production of brick2023年12月1日 Coal gangue, characterized by high ash content and low heating value, is an undesired but inevitable byproduct of coal mining [[1], [2], [3]]Based on the fuel flexibility advantage of circulating fluidized bed combustion (CFBC) technology and increasing demand for electricity, coal gangue is widely used in CFBC power plants for power generation in some Air and oxyfuel combustion characteristics of coal gangue and 2023年12月1日 The coal gangue mainly contains Al 2 O 3 and SiO 2, which can be used as aggregate [6], while a small amount of alkali metal oxides such as Na 2 O, K 2 O, CaO, and Fe 2 O 3 can be used as modifier or flux [7]Based on this, it can prepare porous foams based on aluminosilicates [8], [9] and doped modified asphalt [10], [11]In addition, its application Al and other critical metals coextraction from coal gangue