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 shipping agreement
Opportunities, challenges and modification methods of coal
2024年9月7日 To fill this vacancy, the properties of coal gangue with a specific focus on the analysis of its overlooked agricultural value were summarized in this paper Then, this review 2018年11月1日 Few studies explore the ideal cocombustion ratios of gangue and coal and improve CFB power generation technology Here, we use life cycle assessment to establish a Life cycle carbon emission modelling of coalfired power: Chinese 2022年12月26日 The objectives of this review are to discuss the automated identification of coal rock during the process of coal release in China and other countries, analyze the current A review of coal gangue identification research—application to 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 Comprehensive utilization and environmental risks of coal gangue:
Characterization studies on coal gangue for sustainable geotechnics
2020年2月5日 The CFA has shown that utilization of coal gangue in mechanically stabilized earth wall construction resulted in a net savings of 1709 CO2 (kg) emissions Based on the 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 Comprehensive utilization and environmental risks of coal gangue: 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 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 Full article: A review of intelligent coal gangue
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, 107–1142023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 CharCO2 reaction behaviour and interactions of coal gangue2020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 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 Underground Disposal of Coal Gangue Backfill in China MDPI
Improving Effect of Highsulfur Coal Gangue on Sodasaline Soil
Abstract: A cultivating indoor experiment was conducted to study the effect of highsulfur coal gangue on chemical indices (pH, EC, ESP and exchangeable Na+ ) of sodasaline soil, four kinds of fineness and four kinds of applying rates were used The results showed that 70 mesh highsulfur coal gangue had the best effect, the pH value decreased by 666%, 1120%, 1467% 2012年8月20日 Coal gangue separation is an essential part of the development and utilization of coal A method of separating gangue from coal based on the density by calculating volume and weight of the ores which is measured by the designed equipment was given in this paper The working principle of the separation method was described firstly, then the system composition Coal gangue separation system based on density measurement2024年9月1日 As a byproduct of coal production, coal gangue, if not handled properly, will pose an important hidden danger to the environment and safety Using underground intelligent coal gangue sorting technology can increase efficiency, protect the environment, and enhance safety, which is essential for achieving efficient and ecofriendly coal productionResearch and prospect of underground intelligent coal gangue 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 (CGC
Characterization of coal gangue and coal ganguebased sodalite
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 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 during the coal release process The conventional technique, which involves visual inspection, is not only laborintensive but also can introduce inaccuracies Coal and gangue identification methods A review of coal gangue identification research—application to 2024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 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
Axialcompression performance and numericalsimulation analysis
2024年5月1日 The annual output of coal gangue, the solid waste produced in the coal mining process, is hundreds of millions of tons, and a large amount of longterm stacking will harm the natural environment [1, 2]The treatment of coal gangue is a common problem faced by all countries in the world, and its resource utilization has become a multidisciplinary research 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 2017年12月20日 Coal gangue is one of the largest industrial residues It has high ash content, low carbonaceous content, and heating value Meanwhile, it has some trace elements Large quantities of coal gangue cause serious environmental problems by polluting the air, water, and soil as well as occupying a tremendous amount of land Now, coal gangue utilization is a Trace Elements in Coal Gangue: A Review IntechOpenCoal gangue as one of the largest industrial solid wastes in China brings about very serious environmental, social and economic problems Comprehensive utilization of coal gangue is of importance to sustainable development of society and economy China has made great progress in comprehensive utilization of coal gangue in the latest 40 years since the 1960—1970's Industrial development and prospect about Semantic Scholar
Spontaneous combustion coal ganguebased composite cement:
Coal gangue is a byproduct of coal mining, constituting approximately 15 % of the total raw coal output [1]Over the past few decades, coal has become the primary energy source in China, resulting in the accumulation of 5 billion tons of coal gangue, with an additional 300 to 350 million tons generated annually [1]Spontaneous combustion coal gangue is a widely occurring type 2024年7月23日 Sun and Chen [] decomposed coal rock images based on doubletree complex wavelet transform and completed image identification based on relative entropy similarityLi et al [] built a coal gangue sorting image capture system, and the test results of coal and gangue classification accuracy were 903% and 830%, respectivelyXue et al [] proposed a coal Lightweight detection model for coal gangue identification 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 Research on the Identification Mechanism of Coal Gangue Based 2012年5月1日 Coal gangue is one of the largest industrial solid wastes in China; the comprehensive utilization of coal gangue has important social, economic and environmental benefits In this paper, the coal gangue and comprehensive utilization have been discussed in detail Through the survey results, expounds the development of the use of coal gangue and The Current Situation of Comprehensive Utilization of Coal Gangue
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2月23日 To address the issues of complex algorithm models, poor accuracy, and low realtime performance in the coal industry's coal gangue sorting, a lightweight realtime detection method called YOLOv8sGSC is proposed based on the characteristics of coal gangue This method incorporates the ghost module into the YOLOv8s backbone network to reduce the The realtime detection method for coal gangue based onthis paper, the properties of coal gangue were briefly described, and the utilization status of coal gangue of the current domestic and foreign was summarized In the end, the problems existed in the process of making use of gangue were analyzed, and some recommendations were put forward for these problems Keywords Coal Gangue, Solid Waste Summary of the Utilization Status of Coal Gangue hanspub2024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
Intelligent Sorting System of Coal Gangue with Machine Vision
Gangue sorting is an important part of coal production, which is to choose gangues from coal blocks At present, most of the separation of large gangues is selected by hand selection in China The labor intensity of the workers is large, the production efficiency is low, and the working environment is bad, which seriously affects the physical and mental health of the workers The 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 2024年4月6日 To make a comprehensive use of coal gangue, it is proposed to use this solid waste instead of fine aggregate to prepare gangue concrete pile for pilenet composite foundation The influences from substitution ratio of fine coal gangue aggregate upon the mechanical parameters of concrete were analyzed through laboratory test, and the labscale model test Experimental research on bearing characteristics of coal gangue 2024年10月25日 Steel slag from steel mills and coal gangue discarded during coal mining are both reusable solid wastes with significant emissions [1,2] In 2021, the production of steel slag exceeded 120 million tons in China []In contrast, while developed countries have attained a comprehensive utilization rate of over 90 pct for steel slag, China’s comprehensive utilization Synergistic Utilization of Basic Oxygen Furnace Slag and Coal Gangue
Coal Gangue Recognition during Coal Preparation Using an
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 2024年8月23日 The coal gangue of Ordos City, Inner Mongolia, is selected for this test, with an apparent density of 2635 kg / m 3 and a crushing index of 171 % Mix graded gravel with a 5–20 mm particle size when preparing concrete test blocks Enhancement mechanism of microbial mineralization modified coal gangue 2023年11月24日 Using coal gangue (CG) as raw material, a new type of all solidwastebased 13X molecular sieve material was controllably prepared by alkali fusionhydrothermal method The synthetic molecular sieve was used as a solid adsorbent to treat Cd2+containing wastewater, and its adsorption behavior on Cd2+ in aqueous solution was studied and Renewable conversion of coal gangue to 13X molecular sieve for 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 Study on the Occurrence of Gallium in GalliumEnriched Coal Gangue
Al and other critical metals coextraction from coal gangue
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 2021年1月1日 Solidwaste coal gangue (CG) mixed with cement as underground backfilling material is widely applied in coal mines throughout China However, this material can pollute the environment during its Research Progress on Comprehensive Utilization and Resourceful Investigation 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 gangue2015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
Feasibility Analysis of BacterialTreated Coal Gangue for Soil
2024年6月28日 The longterm storage of coal gangue (CG) mountains causes serious environmental problems such as water and air pollution Thus, sustainable reclamation practices are urgently needed to minimize the environmental impacts brought by CG mountains Pikovskaya medium was employed to screen microorganisms, which were subsequently 2019年12月1日 The utilization amount of coal gangue was 480 million tons in 2013, accounting for 64% of the total output, of which approximately 150 million tons of coal gangue were used for power generation (32%), 56 million tons for the production of building materials (12%), and 260 million tons for land reclamation (56%) (National Development and Reform Commission, 2014)Comprehensive utilization and environmental risks of coal gangue: A DOI: 101007/s11554024015185 Corpus ID: ; Lightweight detection model for coal gangue identification based on improved YOLOv5s @article{Shang2024LightweightDM, title={Lightweight detection model for coal gangue identification based on improved YOLOv5s}, author={Deyong Shang and Zhibin Lv and Zehua Gao and Yuntao Li}, journal={J Real Time Lightweight detection model for coal gangue identification based 2021年7月28日 Coal gangue occupies large swathes of land resources, resulting in ecological fragility and various environmental problems Despite coal gangue having mineral elements similar to those in soil, Influence of coal gangue mulching with various thicknesses and