What equipment is good for quicklime coal gangue

A review of intelligent coal gangue separation

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 2019年12月1日  Accelerating the technical research and equipment development of coal gangue power plants, such as ash and slag discharge, slag cooling as well as economic and efficient Comprehensive utilization and environmental risks of coal gangue: 2023年8月31日  Coal gangue is used for road paving Innovations in pavement technology lead to the incorporation of coal gangue (especially high content of kaolinite and illite) into asphalt mixtures, making it a good roadbed material How to Recycle and Process Coal Gangue: 7 Effective 2024年9月1日  We have developed compact coal gangue sorting devices, expanded conveyor belt sorting systems, and underground coal gangue separation systems based on chemical Research and prospect of underground intelligent coal gangue

Review Highcapacity utilization of coal gangue as supplementary

2024年7月12日  Research suggests that contingent upon the degree and purpose of treatment (activation), CG can be applied in SCM (partially replacing cement), geopolymer (completely 2021年9月28日  Results showed that mechanical ball milling, microwave, and chemical activator could activate coal gangue, and the composite activation effect was the best The fineness of Mechanism on Activation of Coal Gangue Admixture2022年4月6日  This review article also provides insights into CG’s potential applications including its use as a subgrade and subbase material in pavements, landfill liner material, and filter The Sustainable Utilization of Coal Gangue in Geotechnical and In this study, coal gangue mixed with calcium carbonate and corn stalk powder is used as a raw material to produce ganguebased silicon fertilizer through hightemperature activationSustainable and clean utilization of coal gangue: activation and

Underground Disposal of Coal Gangue Backfill in China MDPI

2022年11月25日  This paper summarizes the recycling of coal gangue on the ground, the existing coal gangue backfilling technology, and the latest progress of highefficiency and large 2023年5月25日  Exploiting the use of the soil remediation effects of coal gangue and modified coal gangue will help further improve the comprehensive utilization value of coal gangue and Lowcarbon utilization of coal gangue under the carbon 2023年8月31日  A method for preparing a cementing material by sintering and activating coal gangue is provided The method includes the following steps: (1) crushing coarsegrained coal gangue to predetermined particle size; (2) fully and evenly mixing the crushed coal gangue, the composite additive and water according to a set proportion, and granulating the obtained METHOD FOR PREPARING CEMENTING MATERIAL BY SINTERING ACTIVATION OF COAL 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 regionsRepresentative coal gangue in China: Physical and chemical

Which Crusher is Better for Coal Gangue Crushing?

2022年6月10日  Jaw crushers, impact crushers, and sandmaking machines are the most commonly used equipment in the crushing production of coal gangue They are both fixed and mobileMobile gangue includes crawler type and tire Coal ganguebased geopolymer (CGGP) is one of the hot spots existing in the recycling of coal gangue resources due to its good comprehensive mechanical propertiesFTIR spectra of asreceived coal gangue and mechanically activated coal 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10月29日  Coal gangue identification is the primary step in coal flow initial screening, which mainly faces problems such as low identification efficiency, complex algorithms, and high hardware requirements In response to the above, this article proposes a new “hardware friendly” coal gangue image recognition algorithm, RRBMYOLO, which is combined with dark light RRBMYOLO: Research on Efficient and Lightweight Convolutional

The annual coal gangue production in different provinces of

Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, Urea and quicklime were utilized as additives to optimize slurry transportability and compressive strength2023年12月7日  A coal and gangue detection method for low light and dusty environments, Jihong Gao, Bo Li, 2 Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, Taiyuan, People's Republic of China achieving a recognition accuracy of 976%, a frames per second rate of 99 and a good smoke concentration robustnessA coal and gangue detection method for low light and dusty2020年2月11日  Cemented paste backfill containing coal gangue and fly ash (CGFACPB) is an emerging backfill technique for coal mines that allows environmentally hazardous coal gangue and fly ash to be reused in the underground goaf Meanwhile, CGFACPB can provide an efficient ground support and reduce the surface subsidence Due to the difference of consolidation [PDF] Experimental Investigation on Mechanical Properties of In 2023年5月24日  This paper proposes a modified YOLOv4 model, named GYOLO, for coal gangue recognition with the aim of reducing model parameters, improving calculation speed, and reducing equipment requirements To achieve this, the paper optimizes the feature extraction network structure by using linear operation instead of traditional convolution to obtain A fast recognition method for coal gangue image processing

Resource utilisation of hazardous aluminium dross and coal gangue

2024年8月15日  The resource utilisation of hazardous aluminium dross and coal gangue for fibrereinforced cemented foam backfill can enhance the stability of filling stopes and address environmental issuesHerein, aluminium dross was first cocalcined with quicklime at 800°C, 950°C and 1100°C to prepare modified foaming agents, and their phase transformations 2023年6月7日  Coal resources are still the main energy in China, and there is still a huge consumption in the future for a long time With the gradual reduction of shallow coal resources and the increasing depth of coal seam mining, under the effect of high stress and high water pressure, deep mining faces the problem of water inrush from mine aquifers, which usually Experimental Study on Ratio and Performance of Coal Gangue2022年6月4日  Using longwall top coal caving (LTCC) in an extrathick seam, many problems appear, such as large broken top coal blocks, frequent arch formation in the drawing process, poor balance of drawing top coal and low top coal recovery, which seriously affect safe, efficient and green mining In this study, the size distribution of top coal blocks was measured in LTCC Motion Mechanisms for Top Coal and Gangue Blocks in Longwall Top Coal 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

Investigating the compaction and the mechanical behaviors of coal

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 2020年1月14日  Chen Y Coal pointed out that gangue accumulates in huge coal gangue piles, occupying lots of land as well as having a striking influence on the neighboring environmental effects [1,2]Characterization Studies on Coal Gangue for Sustainable Geotechnics2022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, 107–114The Sustainable Utilization of Coal Gangue in Geotechnical and 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

Preparation and properties of phosphogypsumbased calcined coal gangue

1 天前  Nowadays, nearly 300 million tons of phosphogypsum (PG) are produced every year in the world, of which China accounts for 1/4 of this amount, ranking first in the world [1], [2], [3]In China, the total stockpile of PG exceeds 700 million tonnes and is steadily increasing every year [4], [5]The primary solid waste generated in the wet phosphoric acid process is known as PG 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22日  Data enhancement methods need to be carefully considered and studied for the widespread application of machine vision and deep learning in the mining field Generative adversarial networks (GANs) prove successful at generating data However, training a highresolution image generation network depends on a largescale dataset and takes a long time A fasttraining GAN for coal–gangue image augmentation 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

Resource utilisation of hazardous aluminium dross and coal gangue

2024年8月15日  Coal gangue (CG)—which is the main industrial solid waste from coal mining—is commonly recycled as aggregates in cementbased materials [[27], [28], [29]] Because CG comprises kaolinite, illite and quartz in abundance and exhibits high pozzolanic activity via mechanical and chemical activation, it can be a good candidate for CFB aggregates [ 30 ]2024年9月7日  The persistent reliance on coal has resulted in the accumulation of substantial coal gangue, a globally recognized problematic solid waste with environmental risks Given the coal gangue properties and global land degradation severity, the resourceful utilization of coal gangue as soil conditioners is believed to be a universally applicable, costeffective, high Opportunities, challenges and modification methods 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 of coal gangue is largely increasing associated with coal mining activities, becoming one of the largest industrial prehensive utilization and environmental risks of coal gangue: A 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 Laser

Internal Curing for Tunnel SelfCompacting Concrete Using Pre

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 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 Sorting coal and gangue is important in raw coal production; accurately identifying coal and gangue is a prerequisite for effectively separating coal and gangue The method of extracting coal and gangue using image grayscale information can effectively identify coal and gangue, but the recognition rate of the sorting process based on image grayscale information needs to A sorting method for coal and gangue based on surface grayness 2012年7月2日  This paper provides an overview on the current status of power generation in China using coal gangue The government regulation towards the use of coal gangue for power generation is introduced(PDF) Power Generation from Coal Gangue in China

(PDF) Utilization of Coal Gangue Aggregate for

2020年6月4日  As a massive solid waste, the high valueadded utilization of coal gangue has received more and more attention in China This study focuses on the utilization of coal gangue aggregate in railway 2021年9月1日  On the other hand, some scholars use the caustic separation to extract siliconcontaining substances from coal gangue Caustic separation uses caustic substances such as sodium hydroxide or sodium carbonate to convert the silicacontaining substances in the coal gangue into sodium silicate solution, and the aluminacontaining substances are enriched in Mineral phase transformation in coal gangue by high temperature 2024年8月20日  2 GPY cone crusher: used for medium and fine crushing of coal gangue It can crush medium hardness coal gangue It has the characteristics of large crushing ratio, high efficiency, low energy consumption, uniform product particle size, etc, which can fully meet the various crushing needs of customersWhich Crusher is Better for Coal Gangue Crushing?2019年12月1日  The amount of coal gangue, a byproduct of coal mining and washing, is rapidly increasing with the growing trend of energy consumption The accumulated coal gangue without appropriate utilization Comprehensive utilization and environmental risks of coal gangue

A review of intelligent coal gangue separation technology and equipment

2023年11月6日  Traditional Coal Gangue Separation Process and Equipment Water washing and dry coal preparation are the main parts of coal preparation Spiral separation, jigging, heavy medium separation, and other processes are water washing processes, which have the advantages of mature technology, high separation accuracy, and large processing capacity 2022年6月26日  PDF Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications As green concrete, coal gangue aggregate concrete should have a good workingUsing Chinese Coal Gangue as an Ecological Aggregate and Its 2023年1月27日  Previously conducted studies have established that grouting backfill in mininginduced overburden bed separation and minedout areas with broken rocks provides an efficient strategy to control strata movement and surface subsidence caused by underground mining Grouting backfill materials (GBMs) based on coal gangue (CG) are highly desirable in coal Experimental Study on Performance Optimization of Grouting 2024年5月23日  The resource utilisation of hazardous aluminium dross and coal gangue for fibrereinforced cemented foam backfill can enhance the stability of filling stopes and address environmental issuesResource utilisation of hazardous aluminium dross and coal gangue

Ecofriendly treatment of coal gangue for its utilization as

DOI: 101016/jjclepro2020 Corpus ID: ; Ecofriendly treatment of coal gangue for its utilization as supplementary cementitious materials @article{Zhao2020EcofriendlyTO, title={Ecofriendly treatment of coal gangue for its utilization as supplementary cementitious materials}, author={Yingliang Zhao and Jingping Qiu and Zhengyu Ma and Xiaogang Sun}, 50mm grading screening of raw coal is an important process before the underground coal gangue separation system, and a key step to ensure the effect of coal gangue separation Therefore, the selection of reasonable and efficient screening equipment is the basis for the success of underground gangue separationThis screening equipment is effective for coal gangue separation

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