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 removal processing
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Full article: A review of intelligent coal gangue
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 2024年9月7日 This paper provided innovative ideas for future research on the comprehensive treatment of coal gangue and restoration of degraded soil in order to achieve the dual goals of Opportunities, challenges and modification methods of coal 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 Representative coal gangue in China: Physical and chemical 2019年12月1日 Moreover, coal gangue with a total sulfur content of 6% can recover the sulfur concentrate; while coal gangue used as fuel needs to take corresponding dust removal and Comprehensive utilization and environmental risks of coal gangue:
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Al and other critical metals coextraction from coal gangue
2023年12月1日 Delamination improves gangue structure and Al and other metals extraction efficiency The recycling process reduces ammonium salt cost and environmental pollution 2020年4月29日 For high addedvalue utilization of alumina rich coal gangue (ARCG), a mild hydrochemical process was investigated to extract alumina The influences of NaOH concentration, mass ratio of alkali to gangue, reaction Extraction of alumina from alumina rich coal gangue by 通过综合分析国内外现阶段煤矸石提取有价金属相关技术，系统阐述了“单一/复合活化碱熔/酸浸”联合强化铝、铁等有价组分高效富集研究进展，重点分析了锂、稀土等微量关键金属的赋存状态及提取方法。 针对煤矸石组分复杂且波动范围 煤矸石中有价关键金属活化提取研究进展 cip2022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
Lowcarbon utilization of coal gangue under the
2023年5月25日 Against the background of the carbon neutralization strategy, the treatment and utilization of coal gangue should focus on three aspects: its own carbonfree emissions; its carbon absorption effect and lowcarbon 2016年2月26日 Ore sorting is a useful tool to remove gangue material from the ore and increase the quality of the ore The vast developments in the area of artificial intelligence allow fast processing of fullcolor digital images for the preferred investigations The associated gangue minerals from limestone and coal mines were identified using three different approaches All Novel Methods for Separation of Gangue from Limestone and Coal 2019年12月1日 This study aims to provide a highvalue and environmentally friendly method for the application of coalbased solid waste Modified fly ash/polyurethane (MFA/PU) and modified coal gangue powder Comprehensive utilization and environmental risks of coal gangueUnited States used coal as its source of energy (EIA 2012) Over the coming years it is expected that the demand for coal will rise An estimated 52% of the world coal reserves consist of subbituminous and brown coal also referred as low rank coal (LRC) With the impending energy crisis, it will be increasingly necessary to use LRCsPROCESSING LOW RANK COAL AND ULTRAFINE MINERAL
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Trace Elements in Coal Gangue: A Review IntechOpen
2017年12月20日 1 Introduction Coal gangue is a significant residue during the processing of coal mining and coal washing, which accounts for approximately 10–15% of raw coal production and becomes one of the largest industrial residues in China []The rapid growth of the mining industry in China over the last decades has resulted in large amounts of coal gangue piled in 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 Separation and Recovery of Valuable Carbon ACS Publications2023年12月1日 Pyrite (FeS 2) exists in considerable amounts in coal and is a ubiquitous colorcausing impurity in kaolinitic coal gangue after calcination; this limits the utilization scope of the gangue, and even making it difficult to carry out fine processing directly [12], [13], [14], [15]Iron removal from kaolinitic coal gangue via magnetic separation 2024年8月10日 Coal gangue (CG) is a solid waste generated during coal mining, washing and processing, accounting for 15–20% of coal production It is considered one of the largest industrial solid wastes in terms of discharge and accumulation amounts (Wu et al, 2017)As the world's largest coal producer, China had accumulated over 7 billion tons of coal gangue by 2022 Simultaneous nutrients activation and pollutants removal of coal gangue
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Full article: A review of intelligent coal gangue separation
2023年11月6日 In coal mining, the automatic removal of coal gangue is an important link in modern coal production and processing The majority of coal mining and production in China has been screened, and large gangue sizes have been screened manually (Zou et al Citation 2020 )2024年11月16日 The efficient separation of coal and gangue remains a critical challenge in modern coal mining, directly impacting energy efficiency, environmental protection, and sustainable development Current machine visionbased sorting methods face significant challenges in dense scenes, where label rewriting problems severely affect model Coal and Gangue Detection Networks with Compact and High2019年4月26日 Phosphorus from secondary effluents and coal gangue from coal mining have caused serious environmental problems The feasibility of phosphate removal from secondary effluents using calcinated coal gangue loaded with zirconium oxide (CCGZr) was explored Major influencing factors like the calcinated temperature, CCGZr ratio, adsorbent dose, time and Phosphate Removal from Secondary Effluents Using Coal Gangue 2015年7月1日 While impurity removal can tend to quickly improve the coal value, Galvin KP Development of the reflux classifier Challenges in Fine Coal Processing, Dewatering, and Disposal, SME (coal gangue, coal slime, and middlings) are also produced during this process, which are complex mixtures containing small amounts of coal A review of stateoftheart processing operations in coal preparation
Coal Gangue Recognition during Coal Preparation
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 2023年8月31日 Coal gangue is a waste byproduct generated during coal mining and processing It is harder than coal, has a lower carbon content, and its main components are SiO 2 and Al 2 O 3 Coal gangue has become a significant How to Recycle and Process Coal Gangue: 7 Effective 2024年10月1日 Sulphur removal from coal mining wastes and coal processing byproducts before combustion does not make any sense However, coal mining wastes and coal processing byproducts such as coal gangue with low HGI could induce serious wear and tear on the crushing machineEliminating environmental impact of coal mining wastes and coal 2024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
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Technology and engineering test of filling goaf with coal gangue
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 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 of coal processing and utilization Due to the accumulation of a large amount of coal gangue and the failure to fully utilize or dispose it, it caused problems on the environment in the air pollution and water pollution, and triggered some geological disasters such as landslides and coal gangue debris ows [12] Fortunately, coal gangue is a type ofSustainable and clean utilization of coal gangue: activation and 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
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Coal Gangue Classification Based on the Feature Extraction of the
2023年2月20日 Computervisionbased separation methods for coal gangue face challenges due to the harsh environmental conditions in the mines, leading to the reduction of separation accuracy So, rather than purely depending on the image features to distinguish the coal gangue, it is meaningful to utilize fixed coal characteristics like density This study achieves the 2021年9月29日 This paper describes a novel process, hematite involved roasting − alkaline leaching − Bayer digestion, to extract silica and alumina from highalumina coal gangue (HACG) The phase transformations during roasting were investigated through Xray diffraction, Xray photoelectron spectroscopy, scanning electronic microscope, and energydispersive Comprehensive Extraction of Silica and Alumina from HighAlumina Coal 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 Selfpropelled MnO 2 @MnIn 2 S 4 @coal gangue micromotor as highperformance photoFenton catalyst for enhanced synergetic degradation of It is widely used in the treatment of mineral processing wastewater and includes various techniques, which significantly improved the removal efficiency of pollutants and shortened the reaction time Selfpropelled MnO2@MnIn2S4@coal gangue micromotor as
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Synthesis of Calcium Silicate Hydrate from Coal Gangue for Cr
2021年10月14日 Both the accumulation of coal gangue and potentially toxic elements in aqueous solution have caused biological damage to the surrounding ecosystem of the Huainan coal mining field In this study, coal gangue was used to synthesize calcium silicate hydrate (CSH) to remove Cr(VI) and Cu(II)from aqueous solutions and aqueous solution The optimum 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 MDPI2024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 Lightweight detection model for coal gangue identification based 2024年7月3日 Aiming at the problems of the large storage, complex composition, low comprehensive utilization rate, and high environmental impact of coal gangue, this paper carried out experimental research on the preparation of iron oxide red from highiron gangue by calcination activation, acid leaching, extraction, and the hydrothermal synthesis of coal Experimental Study on the Preparation of HighPurity Iron Oxide
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Reactivity activation of waste coal gangue and its impact on the
2020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 2021年3月1日 To utilize coal gangue effectively and comprehensively, a novel biochar composite was prepared from different feedstocks and coal gangue by one facilestep pyrolysis method We assume that the biochar modified by coal gangue could be used for the removal of anions such as phosphate in waterEnvironmentalfriendly coal ganguebiochar composites 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 gangue from coal, multispectral method with correlation and joint colortexture method were 100 % respectively Combined multispectral and joint colortexture methods gave good accuracy with 64 gray levels quantization for separation of gangue from limestone and coal Keywords Limestone Gangue Colortexture features Image processing Neural networkNovel Methods for Separation of Gangue from Limestone and Coal
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Rethinking Coal Exit, Solution for Waterless Coal Beneficiation
2024年10月30日 HPY’s sorting model is specifically designed to address this by achieving a gangue rejection rate exceeding 90% for particles sized +1060 mm Operating at a processing capacity of 100 tons per 2020年12月7日 Coal gangue (CG) is generated during coal mining activities About 15–20% of CG by weight of the total coal output is discharged during its production CG has become a primary environmental concern around the world (Zhang Ling 2020) It was reported that 175 million tons of coal waste have been stocked in dumps for decades in EuropeEvaluation of modified permeable pavement systems with coal gangue Coal gangue, a byproduct produced during the coal processing, has a serious impact on the environment Using coal gangue as a fertilizer has been proven helpful in potentially reducing its environmental impact and improving its value In this study, the formation mechanism and influencing factors of coalganguebased silicon fertilizer was studied using XRD and FTIR Sustainable and clean utilization of coal gangue: activation and 2023年2月1日 Separation technologies to remove gangue minerals and impurities in coal are based on mineral processing technologies and a summary of the largest mines in top 5 countries of coal production including production, reserves, coal types, impurities, mining methods, and coal cleaning processes were shown in Table 3Conventional and recent advances in gravity separation
Research Progress on Comprehensive Utilization and Resourceful
2021年1月1日 Reusing different mine gangue is an effective method to reduce environmental hazards around the processing plants In this study, coal gangue (CG) of Anjirtangeh coal washing plant with high 2021年2月1日 Leaching tests for the removal of chlorine from coal were conducted to determine the impact of the following parameters on the degree of chlorine removal: temperatures in a range of 20–90 °C, times in a range of 30–240 min and coal fragmentation values in a Analysis of chlorine forms in hard coal and the impact of leaching Coal gangue is an industrial solid waste produced by coal mining and processing [1–3] The average production of gangue accounts for 10–15% of raw coal production [4,5], making coal gangue one of the biggest solid wastes in China At present, utilization ratio of coal gangue can reach about 60% in some countries There are still huge Extraction of alumina from alumina rich coal gangue by a hydro 2023年10月26日 Coal gangue is the waste produced during coal mining and processing, accounting for about 10~15% of the total coal production []The accumulation of coal gangue leads to environmental pollution, including soil and water pollution caused by the weathering and leaching of coal gangue, harmful gas and dust caused by the spontaneous combustion of coal Research on the Preparation of Kaolin from Coal Gangue by
Recognition and sorting of coal and gangue based on image
2021年11月23日 The recognition and sorting of coal and gangue are an important part of the process of reducing costs and improving production efficiency In this paper, under the influence of long running