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 Stone contracting agreement
Representative coal gangue in China: Physical and chemical
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 2024年9月7日 This paper provided a comprehensive review of various modification methods (including mechanical, chemical, microbiological, thermal, hydrothermal and composite Opportunities, challenges and modification methods of coal 2024年7月12日 Coal gangue (CG), which accounts for about 10–20 % of coal output, is a kind of solid waste generated during the coal mining and washing processes According to Fig 2, the Review Highcapacity utilization of coal gangue as supplementary 2024年5月1日 Since concretefilled steel tube (CFST) can fully utilize the selfproperties of steel tube and concrete, scholars have attempted to apply coal gangue as coarse aggregate in the Mechanical and environmental performance of structural concrete
Application of Coal Gangue as a Coarse Aggregate in Green
2021年11月11日 Among the techniques for converting stacked coal gangue to reusable material, one of the most effective ways is to use coal gangue as a coarse aggregate in green 2020年2月5日 The geotechnical properties of coal gangue revealed its potential as fill material in the construction of embankments and retaining walls Mineralogical and chemical Characterization studies on coal gangue for sustainable geotechnicsThe 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 Study of Mechanics and Durability of NonSpontaneous 2024年3月14日 This study aims to assess the impact of utilizing raw coal gangue aggregates (RCGAs) on the mechanical behaviors and compressive stress–strain responses of concrete Effect of raw coal gangue coarse aggregates on mechanical
Preparation of coal gangue ceramsite highstrength concrete and
2022年9月30日 Using coal gangue (CG) as a building material does not only reduce the disposal of industrial waste and promote the resource utilization of solid waste, but also solves the 2024年3月27日 Underground backfilling stands out as a crucial technological strategy for the ecofriendly and effective management of solid waste in mining operationsGangue grouting filling in subsequent space of coal green mining 2024年9月28日 Coal gangue (CG) can be a potential aggregate for concrete production considering its huge production However, its porous structure and high water absorption significantly impact the workability of concrete, restricting its comprehensive utilization This paper proposed a straightforward presoaking technique for CG, where the presoaked CG (PCG) is Internal Curing for Tunnel SelfCompacting Concrete Using Pre 2024年11月1日 Using coal gangue as subgrade filler (CGSF) can address the accumulated issues of coal mine waste, but also save the constructing costs, which has the important ecological and engineering Investigating the compaction and the mechanical behaviors of coal
Lightweight detection model for coal gangue identification based
2024年7月23日 Focusing on the issues of complex models, high computational cost, and low identification speed of existing coal gangue image identification object detection algorithms, an optimized YOLOv5s lightweight detection model for coal gangue is proposed Using ShuffleNetV2 as the backbone network, a convolution pooling module is used at the input end instead of the To investigate the feasibility and durability of aggregate concrete with coal gangue,an experimental study was conducted to validate two relevant indexes,ie,drying shrinkage performance and freezing resistance performanceThe performances of the concrete made of coal gangue aggregate and common broken stone aggregate were carefully compared and Experimental study on the durability of the concrete with coal gangue 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 accumulation of coal gangue causes serious environmental, social, and economic problems in the coal mining area []Heavy metals and harmful organic substances in Lowcarbon utilization of coal gangue under the carbon 2023年8月31日 The coal gangue is crushed and screened in the coal preparation plant to form small particles (less than 6 cm) These particles are then paved into a roadbed with a thickness of about 35 cm After compaction, the density can reach 18 t/m 3 so that the roadbed has good waterproof performance and durability and is more costeffectiveHow to Recycle and Process Coal Gangue: 7 Effective Ways
CharCO2 reaction behaviour and interactions of coal gangue
2023年2月2日 Coal gangue is a byproduct of coal mining and characterized by the low heating value The circulating fluidized bed combustion (CFBC) is perhaps the most effective ways to utilize coal gangue [1,2,3]However, the drawbacks of difficult ignition and instable flame limit utilization of coal gangue [4, 5]Weathered coal, as a low grade coal, has higher heating value 2021年5月5日 A largescale field test to investigate vibration velocities from dynamic compaction of soilaggregate mixture in a fill at a Chengde airport construction site, China, was carried out(PDF) Field study on the improvement of coal gangue filling using 184 Prevention of pilferage of Coal 58 19 MONITORING OF OPERATION AND MAINTENANCE 60 191 Monthly status reports 35 COMPENSATION FOR BREACH OF AGREEMENT 97 351 Compensation for default by the Mine Operator Model Contract Agreement Ministry of Coal2024年3月6日 Under some specific conditions, REY is abnormally enriched in coal and its byproducts In some cases, the concentrations of REY in coal and its byproducts can even reach levels comparable to those found in the lowest industrial grade of rare earth deposits, resulting in comprehensive utilization of coal 3, 4, 5 Abnormal enrichment of REY in coal seams in Characterization and acid leaching of rare earth elements in coal
Utilization of coal gangue as coarse aggregates in structural
2021年1月25日 In China, coal gangue accounting for 1/10, even 1/5 of coal production, is one of the major industrial and mineral residues The stock of coal gangue in China has reached a billion level, with an increasing rate of 150–200 million per year [7], [8]How to utilize the stacked coal gangue is a serious topic in mining industry and construction industry2024年4月1日 Semantic Scholar extracted view of "Safe and environmentally friendly use of coal gangue in C30 concrete" by Chaoqiang Kill two birds with one stone: (opens in a new tab) •API License Agreement The Allen Institute for AI (opens in a new tab) By clicking accept or continuing to use the site, you agree to the terms outlined Safe and environmentally friendly use of coal gangue in C30 2024年3月27日 Underground backfilling stands out as a crucial technological strategy for the ecofriendly and effective management of solid waste in mining operations However, existing backfilling techniques have led to increased production processes at the working face, resulting in a reduction in coal extraction efficiency Addressing the temporal and spatial interference Gangue grouting filling in subsequent space of coal green mining 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
Research on the Identification Mechanism of Coal Gangue Based
2022年12月20日 For coal and gangue, intelligent sorting processes for separation, the use of coal and gangue mineral components with different fundamental differences, and the study of different properties of minerals and coal with different scales and density regarding the gray value change law are presented The results show that the gray value of single minerals and mixed 2024年4月15日 Coal gangue is a byproduct of coal mining and processing, and according to incomplete statistics, China has amassed a substantial coal gangue stockpile exceeding 2600 large mountains, which poses a serious threat to the ecological environment Utilizing gangue as a coarse aggregate to produce gangue concrete (GC) presents a promising avenue for Enhancing Fatigue Performance of Coal Gangue Concrete (CGC2015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 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 Image Recognition of Coal and Coal Gangue Using a
Underground Disposal of Coal Gangue Backfill in China MDPI
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 surface as waste heaps, it occupies large areas of land and cause environmental pollution This paper summarizes the existing gangue backfilling 2024年7月16日 With the continuous development of the textile industry, a large amount of dye wastewater is continuously produced Dye wastewater readily causes allergic reactions and cancer risks, which seriously threaten the health of aquatic organisms and humans Aiming at the pollution problem of dye wastewater, the preparation conditions of calciumbased coal gangue Preparation of CalciumBased Coal Gangue Based on Response 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 China possesses abundant coal resources yet limited oil and natural gas reserves, thus establishing coal's dominant position within China's energy structure [1]CG is a mixed derivative of carbonaceous and other rocks resulting from the coal mining and washing processes, and its primary constituents are Al 2 O 3 and SiO 2 [2]In China, CG production accounts for Experimental study on constitutive relation of coal gangue coarse
Enhancement mechanism of microbial mineralization modified coal gangue
2024年8月23日 In order to test the modification effect, unmodified coal gangue aggregate concrete was prepared as a control group The coal gangue aggregate concrete mix ratio only considers the variable factor of the watercement ratio (045, 050, 055), as shown in Table 72023年10月11日 Backfill mining can effectively alleviate the problems of surface collapse and ecological water pollution, in which the mechanical properties of backfill materials, including coal gangue and coal fly ash, have a decisive role in the effect of filling mining In this study, we analyze the permeability characteristics of coal gangue filler through a set of homemade Study on mechanical properties of coal gangue and fly ash2021年7月28日 Coal gangue occupies large swathes of land resources, 39%, 62%, and 83% of rainfall and increased with stone mulch coverages from 3 to 65% In our study, Influence of coal gangue mulching with various thicknesses and 2024年6月13日 In this paper, steel fiber coal gangue concrete is examined for its fire resistance, high strength, and stability, aiming to achieve both green sustainability and resistance to elevated temperatures We conducted tests on concrete specimens with varying coal gangue aggregate volume replacement rates (0%, 20%, 40%, 60%) and steel fiber volume contents (0%, 05%, Study on Mechanical Properties and Constitutive Relationship of
Effects of the variety and content of coal gangue coarse
China, extensive coal gangue accumulation has been reported in more than 1200 counties Currently, the amount of accumulated coal gangue is approximately 45 billion tons, and there are more than 1600 coal gangue mounds that occupy approximately 15,000 ha of land; moreover, the quantity of gangue accumulation2019年3月29日 ABSTRACT The separation of coal and gangue is an important aspect of coal production, which can improve coal quality, save energy, reduce consumption, and enable the rational use of resources At present, manual selection remains widely implemented, but the working environment is harsh, labour intensity is high, and efficiency is low With the continual Separation of gangue from coal based on supplementary texture 2023年2月27日 Synthesis and development of highefficiency and lowcost adsorbents for treating of the wastewater containing heavy metal ions and/or dyes has been aroused worldwide attention in recent years In this study, the coal gangue as the only supply of Si and Al was adopted to synthesize sodalite using hydrothermal method Both the gangue and the Characterization of coal gangue and coal ganguebased sodalite 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
Research on the Identification Mechanism of Coal
2022年12月20日 For coal and gangue, intelligent sorting processes for separation, the use of coal and gangue mineral components with different fundamental differences, and the study of different properties of 2023年11月23日 This paper expounds on the technological process of technology of filling goaf with coal gangue slurry, establishes three types of slurry filling systems, such as centralized ground layout, Technology and engineering test of filling goaf with coal gangue 2022年1月17日 Heavy Metal Concentrations of Soil, Rock, and Coal Gangue in the Geological Profile of a Large OpenPit Coal Mine in China January 2022 Sustainability 14(2):1020Heavy Metal Concentrations of Soil, Rock, and Coal Gangue in the DOI: 101016/jtca2021 Corpus ID: ; Investigation of copyrolysis characteristics of modified coal gangue and biomass @article{Huo2021InvestigationOC, title={Investigation of copyrolysis characteristics of modified coal gangue and biomass}, author={Xinguang Huo and Xiangru Jia and Changzhong Song and Songtao Hao and Di Investigation of copyrolysis characteristics of modified coal gangue
Preparation of SiC from acid‐leached coal gangue by
DOI: 101111/IJAC12856 Corpus ID: ; Preparation of SiC from acid‐leached coal gangue by carbothermal reduction @article{Li2018PreparationOS, title={Preparation of SiC from acid‐leached coal gangue by carbothermal reduction}, author={Fachuang Li and Zhanyong Guo and Guang Su and Chaobo Guo and Guo Song Sun and Xinchan Zhu}, journal={International 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 nature However, the response characteristics of coal and gangue vary greatly under different illuminance conditions, which poses challenges to the stability of feature extraction Research on Recognition of Coal and Gangue Based on Laser2020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 2021年2月1日 The adequacy of the regression model was confirmed by strong agreement between the predicted R2 (09149 crushed stone (Kuroki et al 2019), coal gangue (Jin et al 2021), alum sludge Synthesis and characterization of lowcost zeolite NaA from coal gangue
Characteristics of leaching of heavy metals from lowsulfur coal gangue
2021年3月11日 Coal gangue is an industrial solid waste inevitably produced in coal mining and coal washing, and its emissions account for approximately 10%–15% of coal production (Zhou et al 2014a, b)China is the country with the highest coal production in the world, and a large amount of coal gangue waste is piled on the surface at mining sites to form coal gangue hill,