
New uses of coal gangue

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 2024年7月12日 Progressed coal gangue exhibits excellent engineering utilization effect Numerous issues were identified, and some suggestions were proposed During coal Review Highcapacity utilization of coal gangue as supplementary 2023年5月25日 Du et al studied the use of coal gangue as a novel planting substrate component and found that it significantly improved the chemical properties (organic matter, total N and P, and available N, P, and K) of the Lowcarbon utilization of coal gangue under the

Opportunities, challenges and modification methods of coal
2024年9月7日 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 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 Only through unremitting efforts and continuous innovation can we better address the problem of coal gangue accumulation, promote the more efficient, environmentally friendly, and Current situation and progress of coal gangue resource utilization2024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 Separation and Recovery of Valuable Carbon ACS
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Characterization studies on coal gangue for sustainable geotechnics
2020年2月5日 To gauge the feasibility of using coal gangue for geotechnical and geoenvironmental applications, comprehensive characterization study was performed which 2024年9月1日 Besides increasing sorting speed, it is also necessary to improve the structure of sorting robots or develop new types of sorting robots that can sort smallsized gangue with diameters below 25 mm Additional types of sorting robots could also be developed, such as those with regular vibration functions to help change the spatial distribution of coal flow and Research and prospect of underground intelligent coal gangue 2024年4月1日 Semantic Scholar extracted view of "Safe and environmentally friendly use of coal gangue in C30 concrete" by Chaoqiang Wang et al Skip to search form Skip to main content Skip to account menu Semantic ScholarSafe and environmentally friendly use of coal gangue in C30 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

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 industry2023年8月31日 In addition to the above 7 uses, coal gangue can also been found the uses in porous ceramics, soil conditioners, water treatment adsorbents, and power generation, etc Conclusion Coal gangue is a harmful largescale industrial solid waste, but it is also a secondary resource rich in silicon and aluminumHow to Recycle and Process Coal Gangue: 7 Effective WaysThis, mixed with the 60 million tons of coal mud also produced, could be used for power generation; and the coal mining gangue could be combined with coal fly ash to produce building materials The estimated cost of such projects would be up to 4 billion yuan , but would be expected to save just over 4 million tons of standard coal per yearGangue Wikipedia2023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

Preparation of coal gangue ceramsite highstrength concrete and
2022年9月30日 Coal gangue (CG) is a type of industrial solid waste produced by the process of coal excavation and separation 1,2,3Generally, one ton of CG is discarded for every 10 tons of produced coal 4,5 2024年2月26日 As a kind of solid waste rich in silicon and aluminium, coal gangue can be used to prepare ceramic materials 1200 ° C Ji et al [20] proposed a new method using highalumina content (PDF) The influence of NaOH concentration on the strength and 2012年7月2日 The heat transfer of Ushaped tube only affects the area within the radius of 2 m The research can provide a new idea for coal gangue disposal and heat utilization View Show abstract(PDF) Power Generation from Coal Gangue in China2023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 Full article: A review of intelligent coal gangue
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Identification and Activation of Coal Gangue and Performance
2020年4月14日 22 Experiment The chemical composition measured by Bruker S8 TIGER XRF analysis; the mineralogical composition measured via Bruker D8 ADVANCE XRD analysis; thermal analysis conducted with Mettler Toledo analyzer in a temperature range of 30–1000 °C at a heating rate of 10 °C/min and N 2 or O 2 atmosphere Mortar strength test: prismatic mortar 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 Results show that multispectral imaging technology can be used for the identification of coal and gangue, and the prediction accuracy of the model combined with LBP feature extraction and GSSVM can reach 9625% (77/80) Accurate identification of coal and gangue is an important prerequisite for the effective separation of coal and gangue The application of imaging Multispectral Imaging: A New Solution for Identification of Coal and Gangue2021年12月1日 To this end, many efforts are devoted into converting coal gangue into aggregates for concrete By this method, coal gangue is expected to be used on large quantity and more importantly as a greener aggregate [8]However, it’s still challenging nowadays since that concrete prepared with coal gangue aggregates (CGA) displays degradated mechanical Environmentally friendly utilization of coal gangue as

New technology and application of brick making with coal fly ash
2015年4月1日 China has ranked first in the coal fly ash emission in the world The multipurpose use of the fly ash from power plant waste is always an important topic for the Chinese environmental protection, which has drawn the concern of the government, scientific research departments, manufacturing enterprises and industry experts This paper introduces an 2024年9月7日 Coal gangue is a complex industrial solid waste mixed with organic compounds, inorganic compounds and minerals (Fabiańska et al 2013)Its major chemical compositions are SiO 2, Al 2 O 3 and Fe 2 O 3, with traces of CaO, P 2 O 5, MgO and MnO 2The chemical composition of coal gangue from various sources and its comparison with soil reference Opportunities, challenges and modification methods of coal gangue 2010年7月15日 DOI: 101016/jjhazmat201003033 Corpus ID: ; Investigation on the activation of coal gangue by a new compound method @article{Li2010InvestigationOT, title={Investigation on the activation of coal gangue by a new compound method}, author={Chao Li and Jian Hua Wan and Henghu Sun and Longtu Li}, journal={Journal of hazardous Investigation on the activation of coal gangue by a new 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 IntechOpen
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A fast recognition method for coal gangue image processing
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 2024年6月4日 According to the statistical data of the new output of coal gangue in the major coalproducing provinces in 2018, the new output of coal gangue in the nine major coalproducing provinces of Inner Mongolia, Shanxi, Shaanxi, and Xinjiang Province, which is 579 million tons, it accounts for 8738% of the total new output in China, and the output Characteristics of Coal Gangue and Present Situation and DOI: 101016/jcscm2021e00751 Corpus ID: ; Environmentally friendly utilization of coal gangue as aggregates for shotcrete used in the construction of coal mine tunnelEnvironmentally friendly utilization of coal gangue as aggregates 2023年5月3日 [14][15][16] The coal gangue is rich in SiO 2 and Al 2 O 3 resources, which can be used to produce foamed ceramics by adding foaming agents instead of clay and other lowresource ceramic raw Basic principle, progress, and prospects of coal gangue ceramic
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Synergistic performance of microwaveactivated coal gangue with
2024年11月1日 Coal gangue: The coal gangue (CG) used in this study is untreated raw coal gangue, sourced from Lingshou County, Hebei Province, China Investigation on the activation of coal gangue by a new compound method J Hazard Mater, 179 (1–3) (2010), pp 515520 View in Scopus Google Scholar2022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 Coal gangue can be processed to 12mm to make bricks Coal gangue sintered hollow brick refers to shale, coal gangue or fly ash as the main raw material 4 Chemical industry: ① Making aluminum trichloride: the main raw materials are coal gangue and chemical hydrochloric acid It is a new type of water purifier Processing technology:What are the uses of coal gangue after processing LZZGCoal 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
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Research on the Identification Mechanism of Coal Gangue 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 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 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 2024年9月1日 Besides increasing sorting speed, it is also necessary to improve the structure of sorting robots or develop new types of sorting robots that can sort smallsized gangue with diameters below 25 mm Additional types of sorting robots could also be developed, such as those with regular vibration functions to help change the spatial distribution of coal flow and Research and prospect of underground intelligent coal gangue
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Safe and environmentally friendly use of coal gangue in C30
2024年4月1日 Semantic Scholar extracted view of "Safe and environmentally friendly use of coal gangue in C30 concrete" by Chaoqiang Wang et al Skip to search form Skip to main content Skip to account menu Semantic Scholar2022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 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 industryUtilization of coal gangue as coarse aggregates in structural 2023年8月31日 In addition to the above 7 uses, coal gangue can also been found the uses in porous ceramics, soil conditioners, water treatment adsorbents, and power generation, etc Conclusion Coal gangue is a harmful largescale industrial solid waste, but it is also a secondary resource rich in silicon and aluminumHow to Recycle and Process Coal Gangue: 7 Effective Ways
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Gangue Wikipedia
This, mixed with the 60 million tons of coal mud also produced, could be used for power generation; and the coal mining gangue could be combined with coal fly ash to produce building materials The estimated cost of such projects would be up to 4 billion yuan , but would be expected to save just over 4 million tons of standard coal per year2023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 2022年9月30日 Coal gangue (CG) is a type of industrial solid waste produced by the process of coal excavation and separation 1,2,3Generally, one ton of CG is discarded for every 10 tons of produced coal 4,5 Preparation of coal gangue ceramsite highstrength concrete and 2024年2月26日 As a kind of solid waste rich in silicon and aluminium, coal gangue can be used to prepare ceramic materials 1200 ° C Ji et al [20] proposed a new method using highalumina content (PDF) The influence of NaOH concentration on the strength and

(PDF) Power Generation from Coal Gangue in China
2012年7月2日 The heat transfer of Ushaped tube only affects the area within the radius of 2 m The research can provide a new idea for coal gangue disposal and heat utilization View Show abstract