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
Difference between coal interlayer and coal gangue
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Reclaiming Subsidized Land: An Evaluation of Coal
2020年1月20日 In order to solve the problems of the poor water and fertilizer conservation of coal gangue and the scarcity of soil resources in coal mining area, we proposed evaluating interlayered profiles, in which the thickness of 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 Classification of coal gangue and identification of coal type based 2023年3月1日 Develop a principal component analysis network (PCANet) frame for identifying coal and gangue by multispectral imaging Structural similarity index measure (SSIM) of coal Recognition method of coal and gangue combined with structural 2023年12月8日 Before coal is used, coal and gangue must be effectively separated to reduce the gangue content in the raw coal and improve the efficiency of coal utilization This study introduces a classification method for Coal and Gangue Classification Based on Laser
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A review of coal gangue identification research—application to
2022年12月26日 Top coal caving is a process for the rational extraction of large amounts of coal resources However, this process readily causes release of excessive amounts of gangue 2020年2月5日 Mineralogical and chemical characteristics of coal gangue are comparable to coal combustion residues like coal ash and fly ash which are widely used in bulk civil engineering Characterization studies on coal gangue for sustainable geotechnics2024年9月7日 Coal gangue, a blackgray rock with lower carbon content and heat value compared to coal, accounts for about 15%20% of coal production (Li et al 2006) The Opportunities, challenges and modification methods of coal 2023年11月6日 Intelligent coal gangue separation equipment has the advantages of fast speed, high precision, strong modularity, and integration scalability It also has the advantages of low operation cost and energy A review of intelligent coal gangue separation
Structural characteristics and lowtemperature oxidation Springer
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 When manually sorting gangue, illustrated in Figure 2, the workers judge the gangue in the coal flow through the naked eye and pick it out by handDetection of coal and gangue Download Scientific 2023年3月1日 At this stage, coal gangue separation methods can be divided into wet gangue separation and dry gangue separation according to whether water resources are consumed [7]In the prospect of the development of coal science and technology during the “14th FiveYear Plan” of China's coal industry, the intelligentization of dry coal preparation is regarded as one of the Recognition method of coal and gangue combined with structural 2022年5月30日 In the process of top coal caving, coal gangue particles may impact on various parts of the hydraulic support However, at present, the contact mechanism between coal gangue and hydraulic support is not entirely clear Therefore, this paper first constructed the accurate mathematical model of the hydraulic cylinder equivalent spring stiffness forming by the Simulation Research on Impact Contact Behavior between Coal Gangue
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CharCO2 reaction behaviour and interactions of coal gangue
2023年2月2日 The charCO2 reaction behaviour is important for oxyfuel combustion of coal gangue and weathered coal or biomass The thermal conversion characteristics of coal gangue, weathered coal, pine sawdust and their blends in CO2/N2 atmosphere were investigated using thermogravimetric analysis, focusing on the reaction behaviour of char and CO2 The results 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 These studies mainly use the difference between coal and gangue properties to distinguish them, and the characteristics involved include images, 2,3 acoustic signals, The experimental dataset for coal and gangue after2019年12月1日 Moreover, the distribution of particle crushing strength for coal gangue is between 302 and 1111 MPa, and the crushing probability and the applied load well satisfy the Weibull distribution Comprehensive utilization and environmental risks of coal gangue
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On the fundamental difference between coal rank and coal type
2013年10月1日 This article addresses the fundamental difference between coal rank and coal type While theoretically settled long ago as being different aspects of coal systems science, the two concepts are 2023年10月2日 With increases in mining depth and intensity, disasters such as stress concentration, slab failure, and coal body dynamic outbursts at the coal–rock interface have become more serious Therefore, it is important to analyze the stress–strain behavior of coal–rock combinations to explore the deterioration process and failure characteristics of coal–rock Study on Uniaxial Compression Deformation and Fracture MDPI2024年11月1日 In recent years, Limestone Calcined Clay Cement (LC 3) [1], which primarily comprises calcined clay, limestone powder, and cement clinker, has become a focal point in the field of lowcarbon binder materials [[2], [3], [4]]The foundation of LC 3 cement lies in the synergistic interaction between calcined clay and limestone [5], allowing a clinker substitution Synergistic performance of microwaveactivated coal gangue with Profiles of Reclaimed Land with Coal Gangue Filling Zhenqi Hu 1,*, Shuguang Liu 1 and Yuling Gong 2 Citation: Hu, Z; Liu, S; the variation of SQI between different profiles reveals it increases with the increase in thickness of overburdens and decreases with the increase in soil interlayer depth of reclaimed landEvaluation of Soil Quality and Maize Growth in Different Profiles
A Diverse Environment Coal Gangue Image Segmentation Model
2023年11月5日 It can be seen that the difference between coal and gangue is not significant under the light source irradiation at the coal mine site, which increases the difficulty of sorting A total of 20,000 images were taken for this experiment, 2019年4月11日 Coal gangue is an auxiliary product produced during the mining of coal resources It has low coal content and can not be used for combustion Its main components are clay minerals and quartz components There are also a small amount of trace elements such as SiO2, AL2O3, and C Coal gangue is mainly used for making ceramics, making bricks, What is the difference between coal gangue, fly ash and cinder?2016年2月26日 Ore sorting is a useful tool to remove gangue material from the ore and increase the quality of the ore The vast developments in the area of artificial intelligence allow fast processing of fullcolor digital images for the preferred investigations The associated gangue minerals from limestone and coal mines were identified using three different approaches All Novel Methods for Separation of Gangue from Limestone and Coal 2024年2月15日 Coal gangue: Ammonium salt roasting at 400 ℃ for 1 h (NH 4) 2 SO 4: NH 4 Cl: coal gangue = 1:2:1: water leaching, 20 mL/g, 60 min, 60 ℃ 8083 % of Li 5635 % of Al 3277 % of Fe [26] Coal gangue: Thermal activation at 400 ℃ for 2 h: 2 M HCl, 10 mL/g, 240 min, 60 ℃ 94 % of Li [33] Coal gangue: Thermal activation at 600 ℃ for 2 hStudy on modes of occurrence and selective leaching of lithium in coal
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Evaluation of Soil Quality and Maize Growth in Different Profiles
The experimental site was built on 17 January 2018, in the coal gangue reclamation area of Dongchen ecological park, Huainan, Anhui Province (32 79 0 N, 116 73 0 E) (Figure1a)2024年10月1日 Coal is an important basic energy and industrial raw material, and its global consumption exceeds 8 billion tons/year [1]The BP World Energy Outlook (2023 Edition) showed that coal accounted for 242 % of the world's primary energy consumption in 2022 [2]Although countries around the world are actively promoting the transformation of energy structure, the Kinetic characteristics and product distribution of tarrich coal in 2024年1月13日 This approach is based on the distinguishing radiation characteristics of natural γrays between coal and gangue a method for identifying coal and gangue based on density difference 23, Precise detection of coal and gangue based on natural γrayconducted coal gangue image identification by the convolutional neural network and transfer learning Hou et al [35] established coal gangue classification system based on the difference between surface texture and gray scale characteristics, and identified coal gangue by image feature extraction and artificial neural networkSimulation Research on Impact Contact Behavior between Coal Gangue
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Opportunities, challenges and modification methods of coal gangue
2024年9月7日 Coal gangue is a complex industrial solid waste mixed with organic compounds, inorganic compounds and minerals (Fabiańska et al 2013)Its major chemical compositions are SiO 2, Al 2 O 3 and Fe 2 O 3, with traces of CaO, P 2 O 5, MgO and MnO 2The chemical composition of coal gangue from various sources and its comparison with soil reference 2021年1月10日 The main reason for low separation efficiency in low rank coal (LRC) flotation was the small wettability difference between organic matter and gangue The experiments were conducted on organic matter, gangue, and Improvement of Low‐Rank Coal Flotation Based on the 2017年9月20日 As the main solid waste in the mine, the coal gangue is considered as one of the most concerned objects in the current crossing field between the geological sciences, environmental sciences and material science []When the advanced technology and process are applied to comprehensively utilize the coal gangue, the energy will be saved and the Thermal decomposition of selected coal gangue Journal of 2023年12月8日 During the extraction and processing of coal, a large amount of solid waste, collectively known as gangue, is produced This gangue has a low carbon content but a high ash content, accounting for approximately 15 to 20% of the total coal yield Before coal is used, coal and gangue must be effectively separated to reduce the gangue content in the raw coal and Coal and Gangue Classification Based on LaserInduced
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Comprehensive utilization and environmental risks of coal gangue: A
2019年12月1日 Over the last 20 years, many countries have been actively struggling to apply the coal gangue in different industries for solving the environmental problem of coal gangue accumulation (Baic and WitkowskaKita, 2011, Bian et al, 2010, Yu et al, 2012b) The utilization of coal gangue has varied widely, especially in different countries2023年12月1日 Oxyfuel combustion technology is suggested as one of the promising technologies for capturing CO 2The combustion characteristics of blends of a coal gangue and a weathered coal under air (21% O 2 /79% N 2), oxyfuel (20% O 2 /80% CO 2) and oxygenenriched oxyfuel (40% O 2 /60% CO 2) conditions were studied using a thermogravimetric Air and oxyfuel combustion characteristics of coal gangue and 2019年5月8日 Recognizing and distinguishing coal and gangue are essential in engineering, such as in coalfired power plants This paper employed a convolutional neural network (CNN) to recognize coal and gangue images and help segregate coal and gangue A typical workflow for CNN image recognition is presented as well as a strategy for updating the model parameters Image Recognition of Coal and Coal Gangue Using a 2022年12月1日 Liquid intervention is an effective method for improving the coal/gangue recognition accuracy in longwall top coal caving mining, especially for coal and gangue with small gray differenceEffect of secondary intervention on recognition accuracy of coal
Analysis of calcination activation modified coal gangue and its
2024年10月15日 Zhao et al [9] used composite activated coal gangue alone to replace part of cement, and studied the effects of different factors on the properties of alkaliactivated coal gangue mortar Geng et al [ 10 ] used the combination of coal gangue and lowcalcium Bayer red mud to prepare geopolymers, and studied the mechanical properties of geopolymers prepared 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 Coal Gangue: Composition, Processing, Use And Recycling2018年11月1日 In order to study the response characteristics of coal and gangue under different illuminance, a coalgangue image acquisition system with adjustable illuminance was designed, and some coalgangue Experimental study on gray and texture features extraction of coal 2023年8月1日 As shown in Table 4 and Figure 2, the pyrolysis characteristic curves of gangue under a nitrogen atmosphere at different heating rates have basically similar trends at each stageStudy on secondary oxidation characteristics of coal gangue at
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Cocombustion kinetics of sewage sludge with coal and coal gangue
2010年10月1日 In this paper, the cocombustion behaviour of sewage sludge with coal gangue and coal were investigated by a thermogravimetric analysis (TGA) in the temperature range from ambient temperature to 2021年9月8日 The YOLOv4 network correctly detected coal and gangue of different sizes, but for the detection of largesized coal and gangue (eg third picture with a size of 6–8 cm and the second and third pictures with a size of 10–12 cm), it was prone to Coal gangue detection and recognition algorithm based on 2024年4月10日 To elucidate the effects of longterm (20 years) afforestation with different woody plant species on the soil microenvironment in coal gangue polymetallic contaminated areas This study analyzed the soil physicochemical properties, soil enzyme activities, soil ionophore, bacterial community structure, soil metabolite, and their interaction relationships at different The role of afforestation with diverse woody species in enhancing 2023年11月11日 Coal gangue image recognition is a critical technology for achieving automatic separation in coal processing, characterized by its rapid, environmentally friendly, and energysaving natureResearch on Recognition of Coal and Gangue Based on Laser
Influence of coal gangue mulching with various thicknesses and
2021年7月28日 Thus, different coal gangue particle sizes and their applications should be implemented in the future In our study, according to the results of HCA (Table 3), 2019年12月1日 Over the last 20 years, many countries have been actively struggling to apply the coal gangue in different industries for solving the environmental problem of coal gangue accumulation (Baic and WitkowskaKita, 2011, Bian et al, 2010, Yu et al, 2012b)The utilization of coal gangue has varied widely, especially in different prehensive utilization and environmental risks of coal gangue: A 2024年11月1日 Using coal gangue as subgrade filler (CGSF) can address the accumulated issues of coal mine waste, with a difference of 13% between the maximum and the minimumInvestigating the compaction and the mechanical behaviors of coal 2022年12月20日 PDF For coal and gangue, intelligent sorting processes for separation, the use of coal and gangue mineral components with different fundamental Research on the Identification Mechanism of Coal Gangue Based