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 distribution
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Selenium in Chinese coal gangue: Distribution, availability, and
2019年10月1日 To obtain a better understanding of the distribution and enrichment patterns of Se in Chinese coal gangue, representative coal gangue samples were collected from seven 2024年6月4日 According to the coalforming characteristics of coalaccumulating basins in China, the coal gangueproducing areas can be divided into 5 regions: Northeast, North, Characteristics of Coal Gangue and Present Situation and Prospect 2018年9月18日 In this work, we gathered the coal gangue at different weathering degree, including red gangue (RG), brown gangue (BG), gray gangue (GG), light black gangue (LB), Assessment of heavy metal in coal gangue: distribution, leaching 2023年3月18日 We detailed analysis of its spatial distribution characteristics, and evaluation of its pollution degree, ecological risk and human health risk, in order to enrich and expand related research, and provide scientific basis for Spatial distribution characteristics and risk assessment
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Comprehensive utilization and environmental risks of coal gangue:
2019年12月1日 Coal gangue, a solid waste generated during coal mining and washing, accounts for approximately 10%–15% of the total coal production The accumulative amount 2022年4月6日 Among coal miningrelated wastes, coal gangue (CG) is the heterogeneous waste generated during the mineral processing or coal washing phase of coal mining A The Sustainable Utilization of Coal Gangue in Geotechnical and 2019年8月25日 This paper summarizes the utilization of coal gangue in the preparation of chemical products such as alumina, aluminum chloride and polyaluminum chloride; New The Current Situation Research on Comprehensive Utilization of In this study, the inductively coupled plasma mass spectrometer and atomic fluorescence spectrometer were used to test the background values of ten heavy metals in coal gangue Study on the distribution characteristics and ecological risk of
Spatial distribution characteristics and risk assessment
2023年3月18日 The pollution of heavy metals in soil caused by exposed coal gangue and its prevention and control has become a hot issue restricting the green mining of coal in China Nemerow integrated pollution index (NIPI), DOI: 101016/JRESCONREC201905039 Corpus ID: ; Selenium in Chinese coal gangue: Distribution, availability, and recommendations @article{Long2019SeleniumIC, title={Selenium in Chinese coal gangue: Distribution, availability, and recommendations}, author={Jie Long and Shixi Zhang and Kunli Luo}, journal={Resources, Conservation and Selenium in Chinese coal gangue: Distribution, availability, and 2023年12月8日 Coal gangue is one of China’s main industrial solid wastes, which contains various harmful heavy metal elements, such as lead (Pb) The longterm accumulation of coal gangue causes Pb to migrate to the surrounding environment due to weathering and rain erosion, eventually endangering human life and health with its continuous accumulation in the food Migration transformation, prevention, and control of typical heavy 2024年3月6日 Therefore, in this study, the REYrich coal gangue in Jinsha County of Guizhou Province, SW China, was used as a research object Based on the study of the occurrence and distribution characteristics of REY in coal gangue, the process of selectively grinding coarsegrained tailing preenrichment and roasting–leaching of coal gangue was exploredCharacterization and acid leaching of rare earth elements in coal
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Particle size distribution of coal and gangue after impactcrush
2017年7月9日 The experimental results indicate that the RosinRammler distribution could accurately describe the particle size distribution of broken coal and gangue under different impact velocities, and there is a minimum overlap region when the impact velocity is 1210 m/s which leads to the minimum mixed degree of coal and gangue, and consequently the benefit of coal 2018年9月18日 DOI: 101007/s1135601831184 Corpus ID: ; Assessment of heavy metal in coal gangue: distribution, leaching characteristic and potential ecological risk @article{Hua2018AssessmentOH, title={Assessment of heavy metal in coal gangue: distribution, leaching characteristic and potential ecological risk}, author={Chunyu Hua and Guangzhu Assessment of heavy metal in coal gangue: distribution, leaching 2024年2月28日 With the longterm sustained development of coal resources, the continuous underground coal mining activities have caused surface subsidence and accumulation of coal gangue waste, which has Study on the macro–micro evolution of compaction characteristics 2019年10月1日 Coal gangue accounts for a large proportion of the solid waste in China, and greater attention has been focused on the concentrations of potentially hazardous trace elements (PHEs) than on the Selenium in Chinese coal gangue: Distribution, availability, and
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Particle size distribution of coal and gangue after
2017年6月1日 Download Citation Particle size distribution of coal and gangue after impactcrush separation Based on the separation and backfilling system of coal and gangue, the mineral material impact 2024年8月12日 The coal gangue dump may introduce heavy metal(oid)s (HMs) The distribution range of PLI values was similar for the 0–10 cm and 10–20 cm soil depths, Assessment of heavy metal(oid) pollution and related health risks 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 Research Progress on Comprehensive Utilization of 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
Diffusion law of coal gangue slurry and the application of
2023年8月14日 Particle size distribution of coal gangue Full size image To characterize the micromorphology of crushed gangue powder, Coal gangue is a solid waste generated during coal mining and processing [[1], [2], [3]]In recent years, with the acceleration of industrialization and the growing energy demand, the production of coal gangue has increased, leading to the formation of large coal gangue mountains [4, 5]Without proper protective measures, these coal gangue piles pose a significant risk of spontaneous A study on the thermal behavior of coal gangue mountains under 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 2021年9月8日 Xiangang et al proposed a coal gangue recognition method driven by deep learning that is based on the differences in the surface characteristics of coal gangue; they also studied the coal gangue location method based on binocular stereo vision, which effectively improves the accuracy of coal gangue identification and location Coal gangue detection and recognition algorithm based on
Influence of heat pipe layout parameters on the cooling effect of
2024年11月7日 Existing research has found that the number, insertion depth and angle, filling rate, and working fluid of heat pipe (HP) can affect the distribution of temperature field inside coal gangue dumps2020年10月15日 The heavy metals, which derived from accumulated coal gangue, are important source of environmental pollution In this study, coal gangue dumps, collected in Shaanxi Province, China, were used to evaluate the potential ecological risks and release characteristics of heavy metals, including the chemical forms, release characteristics, and potential ecological Evaluating the distribution and potential ecological risks of 2024年6月4日 The origin, type, composition and geological characteristics of coal gangue should be discussed from the aspects of coal accumulation, diagenetic characteristics and geological functions, the database of physical and chemical properties, resources and environmental properties and spatial distribution of coal gangue solid waste should be Characteristics of Coal Gangue and Present Situation and 2024年11月1日 Using coal gangue as subgrade filler Li et al 21 measured the basic properties of CGSF, such as particle size distribution, ignition loss, strength change under water softening, Investigating the compaction and the mechanical behaviors of coal
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Damage Model of Steel FiberReinforced Coal Gangue
2023年10月19日 In order to improve the utilization rate of coal gangue and expand the application range of coal gangue concrete (CGC), a certain proportion of steel fiber was added to the concrete, and the freeze–thaw cycles (FTCs) In order to improve the utilization rate of coal gangue and expand the application range of coal gangue concrete (CGC), a certain proportion of steel fiber was added to the concrete, and the freeze–thaw cycles (FTCs) and flexural tests were used to explore the effects of different mass replacement rates of coal gangue (0%, 25%, 50%, 75%, and 100%) and different proportions Damage Model of Steel FiberReinforced Coal Gangue Concrete 2024年7月19日 Due to the extremely high content of kaolinite in coal gangue, the distribution rate of gallium in it is the highest, despite there is no obvious enriched mineral phase Fig 3 MLA image of raw coal gangue (after organic matter deduction) Full size image Fig 4 Back scattered electron (BSE) images of some selected mineral Study on the Occurrence of Gallium in GalliumEnriched Coal Gangue 2020年9月12日 Gradation distribution curve of coal gangue is analogous to that of silty sand Both electrical conductivity values and total dissolved solids content decreased consistently with increase in L/S ratio pH of coal gangue leachate extracted relying on double distilled water reduces with increase in L/S ratioCharacterization of Heavy Metals from Coal Gangue
Study on the variability of oxygen adsorption behavior in coal gangue
1 天前 The pore size distribution in coal gangue exhibits a multiscale nature, comprising micropores (50 nm) Micropores and mesopores facilitate gas adsorption and diffusion, while macropores affect gas 2018年11月1日 Coal gangue is a mixed sedimentary rock composed of various minerals formed or trapped in coal seams during coal formation, which are discharged during coal mining and washing (Hua et al, 2018 Assessment of heavy metal in coal gangue: distribution, leaching 2022年2月21日 Sampling Coal gangue has been one of the largest industrial solid wastes in China Based on the occurrence and regional distribution of coal resources in China and the coal basins containing coal gangue, the production sites of coal gangue in China can be divided into five main regions: Northeast China, North China, South China, Southwest China, and Study on the distribution characteristics and ecological risk of 2024年9月20日 Coal gangue contains a portion of clay minerals, and after thermal activation of about 700 ℃, the kaolinite in calcined coal gangue (CCG) can be transformed into metakaolin, which has pozzolanic activity and can be used as supplementary cementitious materials (SCMs) [10], [11], [12]This can not only consume a large portion of discharged coal gangue, but also Improvement of strength and microstructure of lowcarbon
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Study on the Influence of Particle Size Distribution on the
2024年5月11日 The presence of pyrite poses a significant impediment to the comprehensive utilization of coal gangue, which is a prevalent solid waste in industrial production However, the current efficacy of jig separation for pyrite in finegrade coal gangue remains unsatisfactory To investigate the influence of particle size distribution on the jig separation of pyrite in finegrade 2021年3月2日 In this study, an experimental model about the coal gangue stockpiles in semiopen storage was developed According to the model’s requirements, the corresponding coal gangues were piled up in the factory building, the heat source and collection points were arranged, and the four operating temperatures were selected from 70 to 350 °C for heating A Experimental investigation of temperature distribution and 2023年10月11日 The coal fly ash concentration has a positive relationship with the acceleration factor The permeability of crushed coal gangue follows a hierarchical distribution law and the permeability changes in the magnitude range of 10–11 ~ 10–9 m2 The fractal dimension is inversely related to the permeability of crushed coal gangueStudy on mechanical properties of coal gangue and fly ashInvestigation into trace element partitioning behavior from a coal ganguefired power plant in Shanxi province, China, has been conducted and showed that Hg, As, Be, and Cd were highly volatile elements in the combustion of coalgangue, which were notably enriched in fly ash and may be emitted into the environment via the gas prehensive utilization and environmental risks of coal gangue
Effect of coal gangue stockpiling on spatial distribution
This study selected coal gangue piles and reclaimed soil of Panyi coal mine in Huainan as research object, the spatial distribution characteristics of soil salinity were investigated during the stockpiling of coal gangue Mean while,the simulated rainwater acidity was also determined to test the static immersion The main factors affecting the dissolution and release of weathered 2024年1月13日 This approach is based on the distinguishing radiation characteristics of natural γrays between coal and gangue This study analyzed the distribution characteristics of natural γrays in coal Precise detection of coal and gangue based on natural γray2019年8月25日 The highvalue utilization of coal gangue in the typical mining areaJungeer mining area is analyzed The alumina is extracted by onestep acid dissolution Effects of composition and temperature on porosity and pore size distribution of porous ceramics prepared from Al(OH) 3 and kaolinite gangue[J] Ceram Int, 2007, 33(4):551 The Current Situation Research on Comprehensive Utilization of Coal Gangue2024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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Separation and Recovery of Valuable Carbon ACS Publications
2024年3月13日 Coal gangue (CG), an industrial solid waste with high contents of Li and Ga, has attracted the attention of researchers However, the utilization of CG remains an economic challenge Preenrichment of Li and Ga by flotation was carried out with a view to improving the comprehensive utilization of CG Mineral composition, timeofflight secondary ion mass 2020年6月4日 First, the basic properties of coal gangue such as particle size distribution, ignition loss, strength change under water softening, and compression performance were measured Then, the technology to use coal gangue as filler in railway subgrade was put forward based on a real engineering application with the Jingang coalcarrying railway special lineUtilization of Coal Gangue Aggregate for Railway Roadbed2015年1月1日 Study on the spatial distribution regularities of coal gangue accumulation in the coal mining area of northern Germany—taking coal gangue accumulation area of Ibbenbueren for instance Study on the spatial distribution regularities of coal gangue 2023年9月13日 The backfilling mining method that fills gobs with coal gangue can prevent water inrush hazards, protect groundwater resources, and protect the ecological environment of the mining area However, initial conditions including the particle size distribution of gangue and the stress environment may affect the seepage characteristics of gangue backfill and inrush Preventing water inrush hazards in coal mines by coal gangue