In this paper the physical chemical and pollution characteristics of coal gangue are summarized and the ecological restoration mode is divided into two modes traditional end treatment and treatment while piling
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Get PriceCoal and gangue classification is a key problem in automating the task of gangue picking during the preparation of coal Four coal properties namely raw coal with a dry clean surface a wet clean surface a dry surface covered by slime and a wet surface covered by slime are frequently encountered in real situations Typically the conditions occur simultaneously to yield multiple surface
Get Pricecoal gangue is a rock mixed with organic and inorganic compounds co deposited with coal during coal in a thin layer and in the coal seam or in the top of the coal seam the bottom of the coal the perspective of coal mining domestic coal mines produce billion tons of coal billion tons of coal and …
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Get PriceThe classification of land use types in the study area was consistent with the standard land use classification GB/T 21010 2024 The study area was divided into six categories forest lands grasslands construction lands cultivated lands mining lands and water areas A maximum likelihood approach was used for the classification
Get PriceAs is known grinding and classification of ore by size classes using mills and crushers is a significant part of the cost in ore processing circuits [13 15] In addition to the significant energy and material consumption during production waste from the beneficiation of ores containing REE can have a significant impact on the biosphere [16]
Get PriceOn the base of site classification and site quality evaluation of land for coal gangue dump LCGD in Fushun mining area the plants community succession of LCGD were systematically researched and analyzed The relationship between dominant plants community succession distribution and soil fertility was studied It was achieved that there existed the regularity of soil fertility influence on
Get PriceA new method of coal gangue edge detection Adapt to the complex background and illumination change conditions The area and position information of coal gangue can be extracted quickly and accurately It provides a new scheme to solve the background segmentation problem in coal gangue recognition
Get PriceMachine learning based classification of rock discontinuity trace SMOTE oversampling integrated w… 2024/04/21 Time dependent safety of lining structures of circular tunnels in weak rock strata 2024/04/21 Transparent characterization and quantitative analysis of broken gangue s 3D fabric under the bea… 2024/04/21
Get Pricea The XRD spectra of gangue gasification ash with Na2 CO 3 additions at 900 °C kaolinite Al2 Si 2 O 9 quartz SiO 2 ★ nepheline Na Al Si O 32 sodium aluminum silicate NaAlSiO 4 b The changes of minerals content with Na 2 CO 3 additions
Get PriceTemporal and spatial changes of land use and landscape Coal mining particularly surface mining inevitably disturbs land According to Landsat images acquired over Xilingol grassland in 2024 2024 and 2024 land uses were divided into seven classes i e open stope stripping area wastedump area mine industrial area farmland urban area and the original landscape grassland using
Get Price· Generally mineral processing begins when an ore is delivered from a mine to a processing facility Gravity and Dense Medium Separation Separation based on specific gravity of the valuable mineral relative to the gangue and the carrying medium such as water In dense medium separation the a carrying medium is a mixture of water
Get PriceCoal gangue is a loose deposit with unique particle structure and composition The physical and mechanical properties of coal gangue compaction are significantly different from other loose materials The theoretical research on DC method is in development stage and is primarily carried out on soil with varying traits
Get PriceSchematic outline of classification process used in this study 1 vibratory feeder 2 turbo air classifier 3 dust collector and 4 centrifugal fan The cut size of classification was obtained from the Tromp curve The relationship between the operating parameters and the cut sizes was further statistically examined using MINITAB 16
Get PriceThrough trial and error the echo intensity of lidar can clearly show the texture information of coal and gangue and after combining with the DenseNet 40 it has more benefits than the existing classification methods in accuracy efficiency and robustness Coal and gangue rock identification is the essential process in a coal preparation plant In an actual coal preparation plant the
Get PriceCoal 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 Wang et al studied the effects of CG with different fineness 200 325 500 1250 and 2024 mesh
Get PriceThe study focuses on the classification of coal and gangue via image analysis under multiple mixed conditions wherein four coal properties namely coarse coal with a dry clean surface a wet clean surface a dry surface covered by slime and a wet surface covered by slime are presented together
Get PriceVibrating screen is widely used in coal mine power plant fly ash 38 pieces of electricity coal coal gangue and other materials classification Coal vibrating screen is composed of vibration source vibrator screen body screen damping device base and so on The screen is divided into single double and multi layer diverse structure polyurethane screen plate … How To Introduce Coal
Get PriceCoal gangue or gangue is a kind of black or gray solid waste discharged in coal mining and coal washing Compared to the widely used fossil fuel gangue provides much less energy supply and contains less value due to lower carbon content It can also be a pollution source in the absence of proper treatments [ 1 ]
Get PriceArticle 55 Where a power grid enterprise in violation of the provisions of this Law refuses to buy the electricity which is generated by enterprises through the use of residual heat and residual pressure coalbed methane and fuels of low heat value such as gangue slurry and garbage the electricity regulatory authority of the State shall order it to rectify within a time limit if losses
Get PriceThere are three main types of coal gangue for chemical use the first is to extract a rare element in coal gangue by various methods such as Ga Se Ti Co etc The second is to recover beneficial mineral products such as kaolin the third is the production of silicon aluminum sulfur and other inorganic chemical products 5 Agricultural field
Get PriceAutomatic intelligent ore sorting machine is applicable to multiple mineral species including non ferrous mineral ferrous mineral non metallic mineral radioactive mineral and coal etc It s widely used in pre sorting ore classification waste extraction gangue separation from lump coal and other links
Get PriceBased on maceral content and its appearance in a hand specimen coal is classified into four principal types clarain durain fusain and vitrain Coal may also be classified in grades using subjective terms low sulfur coal high ash coal with reference to their impurities for commercial purposes Otto C Kopp
Get PriceFine coal dry cleaning using an air dense medium fluidized bed with improved magnetite medium Yuemin Zhao Zhijie Fu Xuliang Yang Zhenfu Luo Chenglong Duan Shulei Song
Get PriceAbstract The image recognition of coal and gangue is an important part of coal and gangue separation technology based on pseudo dual energy X ray transmission XRT However it is difficult to segment the coal gangue image due to the close proximity or occlusion of coal gangue and it is easy to cause classification and recognition errors of coal gangue based on artificial threshold
Get PriceCoal and gangue rock identification is the essential process in a coal preparation plant In an actual coal preparation plant the existing classification methods have many disadvantages in safety and identification rate We utilized the echo intensity image EII of lidar for coal and gangue iden …
Get PriceAs an important energy source coal occupies a dominant position in the process of industrialization In the process of coal mining non coal rocks with low carbon content excavated are collectively referred to as gangue and mined from the roof and floor of coal seam [ 1 ]
Get PriceThe results of theory analysis and simulation show that the coal gangues are identified and classified from coal bulk with wavelet transform method which provides the technique foundation for the coal gangue automatic selection system Published in 2024 Second International Conference on Intelligent Computation Technology and Automation
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