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
Natural conditions of coal gangue
Influence of coal gangue mulching with various thicknesses and
2021年7月28日 Coal gangue, as a type of solid waste discharged during coal mining and coal washing, occupies a large amount of land resources owing to accumulated gangue, which 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 2024年4月1日 Coal mining and washing is accompanied by the production of large amounts of coal gangue, which exerts a notable influence on the natural environment However, as a form Environmental hazards and comprehensive utilization of solid 2021年5月1日 In this paper, the physical, chemical and pollution characteristics of coal gangue are summarized, and the ecological restoration mode is divided into two modes: traditional Review of Coal Gangue Characteristics and Ecological Restoration
Lowcarbon utilization of coal gangue under the
2023年5月25日 Heavy metals and harmful organic substances in coal gangue can pollute soil and water resources [6, 7] and greatly impact the mining environment [2, 8] Spontaneous combustion of coal gangue produces harmful 2016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 utilization2020年6月26日 The results suggested that coal gangue significantly influences soil S, pH and plant species after 8 years of natural recoveryExcess sulfur and Fe elements drive changes in soil and Nature2022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
Contamination characteristics of heavy metals and enrichment
23 小时之前 Overview of the study area Yaojie coal mining, consisting of the Yaojie Sankuang mine and Haishiwan mine (Fig 1), is one of the key coal bases in Gansu ProvinceIt is located 2023年11月23日 Process of filling goaf with coal gangue slurry The process of filling goaf with coal gangue slurry is shown in Fig 2Specifically: the coal gangue is crushed by a multistage crusher and enters Technology and engineering test of filling goaf with coal gangue of coal gangue and experimental conditions, are used to simulate the effects of the release of heavy metals in the ecological environment under natural conditionsCharacteristics of leaching of heavy metals from lowsulfur coal gangue 2018年1月9日 Recognition of coal and gangue (roof rock) is a key technology to realize fully mechanized top coal caving automated mining This paper proposes to detect the instantaneous refuse content of drawn Radiation characteristics of natural gammaray
Characteristics of leaching of heavy metals from lowsulfur coal gangue
2021年3月11日 Coal gangue is the main pollution source of mining areas When coal gangue is stacked and recycled, the heavy metal elements contained in it are released by natural weathering and leaching, which causes damage to the surrounding ecological environment In this study, the leaching and precipitation characteristics of heavy metals in lowsulfur coal gangue 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 2023年9月21日 In this study, the research aim is to enhance the activity index of activated coal gangue and study its activation mechanism The activation process of coal gangue was optimized through orthogonal tests, and the BackPropagation (BP) neural network model was improved using a genetic algorithm With the effects of grinding duration, calcination temperature, and Study on the Reactivity Activation of Coal Gangue for Efficient2024年4月13日 Adsorption experiment The preparation parameters for the modified coal gangue were optimized by changing the mass of coal gangue (5, 10, 15, 20, 25 g), the rotation speeds (100, 200, 400, 600, 800 rmin −1), and the duration of ballmilling (0, 10, 20, 40, 80 h) to obtain the best preparation conditionsAmong them, the zirconia balls in the planetary ball Performance of ballmillingmodified coal gangue on Pb
Radiation characteristics of natural gammaray from coal and gangue
2018年1月9日 Radiation characteristics of coal and roofrock samples We can know from the analysis that the content of the radionuclide in the sedimentary rocks is related to the content of clay minerals, the leaching of lowsulfur coal gangue is not yet clear, coal gangue samples of the large coal gangue hill in the Linhuan mining area of Huaibei are selected as the research objects, and an indoor leaching experiment is carried out with these samples This study choose different weathering years, type of coal gangue and experimental conditions, are Characteristics of leaching of heavy metals from lowsulfur coal gangue 2020年9月12日 From the results, it is evident that the natural coal gangue has a neutral pH of about 7 With the increase in L/S ratio, Zhang J, Sun C (2016) Effect of calcination condition on the microstructure and pozzolanic activity of calcined coal Characterization of Heavy Metals from Coal Gangue2017年4月1日 The natural coal gangue has a gray tint, is fissile and laminated with organic substance (coal) Regulation of the Ministry of Environment of 18 November 2014 on the conditions to be met during placing waste waters into water or ground and on substances particularly harmful to the aquatic environment, DzU 2014, The structural and surface properties of natural and modified coal gangue
Improvement of strength and microstructure of lowcarbon
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 the natural ray coal gangue identication technology heavily relies on the immediate roof of the coal seam As such, the sedimentary environment and conditions, the sedi Precise detection of coal and gangue based on natural γ‐ray2024年3月14日 In the natural coal formation process, gangue is inherently associated with coal seams, interwoven within them, and predominantly concentrated within the sedimentary rock layers of the coal strata (Bian et al, 2009)Its discharge occurs at various stages, such as during well construction, when the excavation development, and raw coal washing (Guo, 2017)Environmental impact assessment of acidic coal gangue2024年4月1日 This not only causes a serious waste of land resources, the openair environment piling up coal gangue is not only prone to natural phenomena Available silicon content of calcined coal gangue under different conditions: pure coal gangue (left), coal gangue mixture with CaCO 3 and corn stalk, respectively (right) [104]Environmental hazards and comprehensive utilization of solid waste coal
Coal and Gangue Classification Based on LaserInduced
2023年12月8日 As depicted in Figure 1, two main methods can be employed for classifying coal and gangue: manual classification and automatic classificationIn manual classification, the operators primarily sort coal and gangue based on color and other visual characteristics The working conditions for manual classification are generally more strenuous and demanding, 2024年11月8日 The exposed accumulation of coal gangue undergoes changes when it is soaked by rainwater, exhibiting varying tendencies for spontaneous combustion in different precipitation regions This study investigates the effects of moisture on the oxidation and spontaneous combustion of coal gangue in highsulfur coal gangue from the Qipanjing area of Study on Natural Characteristics of Coal Gangue Oxidation under 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4月21日 Natural gamma ray method requires that there must be a lot of radioactive elements in coal and gangue, and the cost of sensor is high; Image recognition is greatly affected by on–site dust, so Coalgangue recognition via multibranch convolutional neural
Characteristics of leaching of heavy metals from low
2021年3月11日 Coal gangue is the main pollution source of mining areas When coal gangue is stacked and recycled, the heavy metal elements contained in it are released by natural weathering and leaching, which 2020年6月26日 Coal gangue piles accumulate outside mines and can persist for years, negatively impacting the regional environment To determine the main cause of soil pollution at coal gangues, several coal Excess sulfur and Fe elements drive changes in soil and Nature2020年2月5日 Global rise in greenhouse gas emissions (GHG) is triggered mainly due to the consumption of fossil fuels for power generation and domestic usage Among the fossil fuels, coal is a primary contributor to global GHG with substantial emissions generated during its mining and combustion process Coal gangue, a residue produced during the coal mining process, has Characterization studies on coal gangue for sustainable geotechnics2023年2月9日 Aiming at the problems of low accuracy of coal gangue recognition and difficult recognition of mixed gangue rate, a coal rock recognition method based on modal fusion of RGB and infrared is proposed A fully mechanized coal gangue transportation test bed is built, RGB images are obtained by camera, and infrared images are obtained by industrial microwave Study on recognition of coal and gangue based on multimode
Representative coal gangue in China: Physical and chemical
2024年2月1日 Coal is not only the most abundant fossil fuel on earth, but also an indispensable energy source in the industrial age According to the data of “2021 National Mineral Resources Reserve Statistics Table”, the cities with the most coal reserves in China's energy minerals are Inner Mongolia, Xinjiang, Shanxi, Hebei, Chongqing, Gansu, Shaanxi and other regions2017年4月1日 According to the RSM test, the optimum conditions for repairing AMD with coalgangueloaded SRB in the openpit mine were a coalgangue dosage of 52 g, SRB inoculation concentration of 117%, and The structural and surface properties of natural and modified coal gangue2024年11月15日 Coal gangue is a form of solid waste produced during coal mining and processing [1]A significant quantity of coal gangue, approximately 6 ∼ 7 billion tons, was mainly accumulated in the mining areas, leading to land occupation, environmental pollution, and even structural hazards [2], [3], [4]For the target of “carbon peaking and carbon neutralization”, the Creep behavior of BFRPconfined coal gangue concrete under 2024年1月13日 To address the technical limitations of automatic coal and gangue detection technology in fully mechanized top coal caving mining operations, the low radiation level radioactivity measurement method is utilized to assess the degree of coalgangue mixture in top coal caving process This approach is based on the distinguishing radiation characteristics of Precise detection of coal and gangue based on natural γray
Effect of Physical and Chemical Properties of Coal Gangue Under
2020年4月30日 This paper investigated the influence of physical and chemical properties of coal gangue under different geological conditions and aggregate replacement rate (0, 30%, 60%, 100%) on the compressive strength of coal gangue concrete (CGC) The Xray diffraction (XRD)The coal gangue in China is the core field of bulk solid waste comprehensive utilization due to its massive stock and emission, high concentration of output, small proportion of highvalueadded utilization, and outstanding environmental impact Hence, the prospect of resource utilization of coal gangue is broad The existing disposal capacity and scale of coal gangue obviously Research progress of highvalue utilization of coal gangue The experiments on the mixed condition of roofrock time, the natural ray method for coal and gangue recognition has fast speed, noncontact measurement, not a ectRadiation characteristics of natural gammaray from coal and gangue 2024年8月12日 The coal gangue dump may introduce heavy metal(oid)s (HMs) into surrounding agricultural soils, posing potential health risks to nearby communities This study evaluated heavy metal(oid) pollution Assessment of heavy metal(oid) pollution and related
Radiation characteristics of natural gammaray from coal and gangue
Radiation characteristics of natural gammaray from coal and gangue for recognition in top coal caving Ningbo Zhang1,2,3 Changyou Liu3,4 The experiments on the mixed condition of roofrock2023年8月14日 According to the scanning electron microscope test results, coal gangue contains a large number of clay minerals (in sheet form), mainly kaolin, hematite, and other minerals, with a large number Diffusion law of coal gangue slurry and the application of 2022年2月18日 DOI: 101007/s1105302210016z Corpus ID: ; Spatial Effect Analysis of Coal and Gangue Recognition Detector Based on Natural Gamma Ray Method @article{Zhao2022SpatialEA, title={Spatial Effect Analysis of Coal and Gangue Recognition Detector Based on Natural Gamma Ray Method}, author={Mingxin Zhao and Huaishan Liu Spatial Effect Analysis of Coal and Gangue Semantic Scholar2024年6月28日 The compaction characteristics and bearing capacity of dry filling materials in goaf have a significant influence on stope control and surface stability Through acoustic emission monitoring and Study on compaction characteristics and mechanical model of dry
Research on Recognition of Coal and Gangue Based on Laser
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 natureDOI: 101038/s4159801718625y Corpus ID: ; Radiation characteristics of natural gammaray from coal and gangue for recognition in top coal caving @article{Zhang2018RadiationCO, title={Radiation characteristics of natural gammaray from coal and gangue for recognition in top coal caving}, author={Ningbo Zhang and Changyou Liu}, Radiation characteristics of natural gammaray from coal and gangue 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 2023年11月21日 In order to solve the technical bottleneck of automatic detection technology of coal and gangue in the fully mechanized top coal caving mining, the low radiation level radioactivity measurement The Precise Detection Technology of Coal and Gangue Based on Natural