Oct 26 2022The micro aggregate effect of the activated CG reduces the contact rate between the cement particles and water and the interparticles thus slowing down the process of hydration reaction and leading to longer setting times Keywords
Get PriceSep 21 20221 Coal gangue power generation Coal gangue grinding adopts fluidized bed technology and when the carbon content is more than 20% it can be used as energy and can be used for power generation 2 Recovery of coal pyrite The coal gangue powder after grinding can facilitate the recovery of coal pyrite etc 3 Used in building materials
Get PriceWANG Xin min et al Paste like self flowing transportation backfilling technology based on coal gangue 141 18 Fig 4 20 SEM pictures of samples with suggested dosage 22 5 5 1 Backfilling system and craft Backfilling system The preparation plant for the Coal Jaw Crusher Price In Kenya
Get PricePage d accueil Revues Journal of Porous Media Prochains articles Acoustic emission spectrum characteristics and localization evolution mechanism of coal and coal gangue specimen failure Journal of Porous Media
Get PriceApr 28 2022Current research shows that coal gangue can be used as a filling material for soil reconstruction applied in the ecological restoration of mining areas but influenced by coal gangue material ratios etc
Get Price4 days agoGangue is a kind of main solid waste produced in the coal mining process If it is not treated before coal combustion the calorific value of coal is reduced and the emission of harmful substances increases Therefore it is very important to identify and sort coal gangue cleanly and efficiently
Get PriceCoal gangue is a solid waste discharged during coal mining and coal washing It is a dark gray rock with lower carbon content and harder than coal that is associated with coal seams during coal formation Coal gangue is mainly used to produce gangue
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Get PriceTechnical advantages 1 The high precision and dural engergy acquisition we developed independently can not only identify minerals with large density difference and high content but also identify minerals with small density difference and low
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Get PriceOct 13 2021Coal gangue can also be used to produce low calorific value gas make ceramics make soil amendments or be used for paving underground filling and ground filling Grass can also be planted on the spontaneous gangue hills to beautify the environment Coal gangue crusher and pulverizer
Get PriceAn effective amount of kerosene cleaning by non ionizing collectors was investigated using 5kg/ton at pH 9 a conditioning time 10 min impeller speed Kerosene and pine oil which are the most commonly reagents 2024 rpm and flotation time 3 min the weight % of the float used in oil shale flotation
Get PriceNov 11 2021Using coal gangue as coarse aggregate partly or completely replacing natural aggregate to produce coal gangue concrete CGC will effectively reduce the mining amount of natural gravel [13] [14
Get PriceThis BAR is applied to bearing elements of finite element model FEM and then current cost of the building and the construction cost used 75% coal BAR are compared with each other It has been observed that when 75% coal BAR is used instead of aggregate in RCSs there is a 40% reduction in construction costs
Get PriceCoal gangue grinding powder can be used for coal gangue brick making cement light aggregate production coal gangue blocks etc 4 Bricks made from coal gangue The process of making bricks from coal gangue is basically the same as that of making bricks from clay mainly including the preparation molding drying and baking of raw materials
Get Price4 days agoNowadays most of the deep learning coal gangue identification methods need to be performed on high performance CPU or GPU hardware devices which are inconvenient to use in complex underground coal mine environments due to their high power consumption huge size and significant heat generation Aiming to resolve these problems this paper proposes a coal gangue identification method based on
Get PriceTo realize the use of CGCC in a variety of engineering fields such as civil engineering backfilling engineering and so on and to reduce the interference of other additives on material properties Ordinary Portland cement P O 42 5 R coal gangue aggregate fibers polycarboxylic acid based superplasticizer and lab water make up CGCCs
Get PriceDec 23 2021The use of coal gangue to prepare building materials mainly including bricks cement raw materials ceramic materials etc 1 Brick making Coal gangue bricks usually use the calorific value of coal gangue to provide the required drying and baking energy The calorific value of coal gangue in my country is 3300 6300 kJ/kg [5]
Get PriceCoal 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 residues
Get PriceThus research and development of other new SCMs was needed in the concrete area Coal gangue CG and coal gasification slag CGS contain a large amount of siliceous and aluminous minerals and have certain pozzolanic reactivity In recent years the use of CG and CGS as SCMs in concrete attracted more researcher s attention
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Get PriceThe pine oil or MIBC were used as frothing agents By using 5g/kg kerosene as a collector and 9g/kg of MIBC as a frother at pH 9 a kerogen of 38% with recovery of 88 5% was obtained from oil shale sample of 28% Keywords Oil Shale Flotation Characterization Energy Minerals 1 Introduction Oil shale is the second largest solid fossil fuel
Get PriceJun 14 2022The identification of coal and gangue plays an important role in improving resource utilization and reducing environmental pollution
Get PriceWhat is Washed Anthracite Lump Coal Low Sulfur Coke Free Slag Coal Gangue Boiler Coal coal manufacturers & suppliers on Video Channel of Made in China com
Get PriceSep 6 2022the main research objectives of this study are as follows 1 to analyze the identification ability of multispectral spectral analysis combined with 1d cnn for coal and gangue; 2 compare the recognition effect of 1d cnn with different structures to select the best structure; 3 reasonably set the optimizer activation function and network depth …
Get PriceMay 19 20211 Building Bricks Are Prepared From Coal Gangue Coal gangue itself has a certain plasticity and sintering property and can be used to produce brick after homogenization crushing purification and aging At present the most popular use of coal gangue is the production of building bricks widely used in the area the production process is mature
Get PriceSep 13 2022Coal gangue powder is widely used in the construction field 1 Brick making with coal gangue powder Coal gangue powder is the raw material for making solid gangue bricks porous load bearing gangue bricks hollow gangue bricks and other brick laying materials 2 Coal gangue powder replaces clay to produce cement
Get PriceNov 10 2022Monodisperse silica powder was synthesized by sol gel method using sodium silicate prepared from acid residue after alumina extraction from coal gangue leached by NaOH The dissolution rate of SiO 2 was determined according to the potassium fluosilicate volumetric method GB/T 27974 2024
Get PriceMay 1 2021The disorderly accumulation of coal gangue not only occupies a large amount of land resources and causes natural disasters but also pollutes the surrounding ecological environment which in turn affects human health and normal production and life
Get PriceIn 2024 a coal gangue thermal power station Chinese was acquired from the parent company for ¥222 1125 million RMB In August 2024 the coal gangue thermal power station and the number 2 coking factory of the listed company were closed down due to urban renewal policy of Taiyuan
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