3 Among them a commonly used equipment for the DMS process is a dense medium cyclone DMC which can separate dense media according to the difference in specific 1 Crushing The material is first crushed to a smaller size to facilitate the release of valuable minerals from the gangue 2 Prepare the suspension usually a finely ground ferrosilicon or
We have 2 equipment machinery process production linesassembly lines 4 the mainframe imported flux cored wire production lines and automatic surfacing restoration production lines with an annual output of more than 1000 sets electric equipments and 15 000 tons to 20 000 tons of flux cored welding wire Mine and coal gangue separate and
Introduction of Scraper Conveyor Scraper conveyor is a kind of conveying equipment that continuously conveys powder granule and small block materials in a closed shell by means of a moving scraper chain It is suitable for closed conveying the conveying volume is not too large the process layout is complicated and multi point feeding or multi point
A modified YOLOv4 model named GYOLO for coal gangue recognition is proposed with the aim of reducing model parameters improving calculation speed and reducing equipment requirements This paper proposes a modified YOLOv4 model named GYOLO for coal gangue recognition with the aim of reducing model parameters improving calculation
A modified YOLOv4 model named GYOLO for coal gangue recognition is proposed with the aim of reducing model parameters improving calculation speed and reducing equipment requirements This paper proposes a modified YOLOv4 model named GYOLO for coal gangue recognition with the aim of reducing model parameters improving calculation
connected with the gangue and needs to be ground to achieve further dissociation Kaolinite Al 2 O 3·2SiO 2·2H 2 O and quartz SiO 2 are two typical minerals in −18 In the flotation process these gangue minerals may enter into clean coal products through coating or entrainment Numerous studies
Coal gangue produced during coal mining and processing [1 2] is one of the most extensively produced solid wastes in China [1 3] accounting for approximately 10%‒20% of raw coal production [] The accumulation of coal gangue causes serious environmental social and economic problems in the coal mining area [] Heavy metals and harmful organic substances in
This also indicates that the comprehensive utilization of coal gangue and fly ash had not been fully developed in the past 11 years and the comprehensive utilization amount had always changed with the fluctuation of coal production resulting in the low annual comprehensive utilization growth rate of coal gangue and fly ash which was %
A complete set of fixed coal gangue sand production line equipment includes feeding crushing sand making screening transportation etc common crushing equipment includes jaw crusher coarse crushing impact crusher medium and fine crushing or directly select one time forming hammer crusher; Fine crushing and shaping equipment is
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
2 Cemented backfill represents a significant trend in mine filling methods; however it often exhibits high brittleness and limited resistance to failure which can restrict its practical application This study investigates the mechanical properties and damage evolution of fiber reinforced coal gangue cemented materials CGCMs at various curing times using uniaxial
Lithium extraction from the coal gangue was systematically investigated via the integrated process of roasting and acid leaching with the mechanism analysis The majority 94% of lithium was extracted when raw samples are roasted at 400°C for 20 min before 4 h leaching with 2 mol/L hydrochloric acid at 60°C which represented the optimal
Artificial gangue selection as the earliest method of coal gangue separation exhibits low efficiency and accuracy while also posing health risks to workers [10] Wet gangue selection technology utilizes the gravity difference between coal and gangue in a liquid medium to achieve efficient separation addressing the issue of fly ash that endangers worker health [11]
A model that forwards image feature extracted by DenseNet to Gaussian process is proposed which is trained on images taken on surface and achieves high accuracy on photographs taken underground which indicates this method is powerful in few shot learning such as identification of coal and rock/gangue and might be beneflcial for realizing automation in
Jig beneficiation is widely used in the beneficiation of tungsten tin iron manganese coal and other ores In China about two thirds of the tungsten ore is processed by jigging and jig has always been the dominant for the processing of coal At present some weak magnetic iron ore processing plants also use jigs as the main equipment
Grayscale processing of coal and gangue images In the processing of color images the three components of R G and B should be processed respectively but in fact they cannot reflect the
Therefore we need to come to the Shanxi coal gangue sand making machine produced by SMMVIK Machinery The specific introduction is as follows in terms of the overall structure the composition of Shanxi coal gangue sand making machine is relatively complex and the conventional sand making equipment can not meet the forming effect of Shanxi
sponding coal gangue generation was billion tons Approximately billion tons of coal gangue is produced annually in China and stockpiles of 5 billion tons have amassed which cause serious environmental problems [ 4 5] The utilization of coal gangue has been actively studied over the last 20 years It can be used in the
As a by product 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 eco friendly coal production
The coal gangue and fly ash used in the experiments were collected from a gangue dump and a power plant in the Coal Mine respectively In practical applications due to the limitations of the backfill process and equipment only gangue with a particle size of 50 mm or less is generally used for backfill Li et al 2017 Li et al 2017
The selective separation of hydrophobic coal particles from hydrophilic gangue minerals by froth flotation dates back to the 1920s Prior to this commercial applications of froth flotation were limited only to ores and minerals finer than 100 µm in size Nguyen and Schulze 2003 In coal flotation particles finer than 500 µm are commonly employed due to their natural
images of coal and gangue samples are collected and the data set is divided Then the acquired image data set is enhanced and preprocessed Finally the coal and gangue are classified using the improved GhostNet model Materials and image sampling In this study coal and gangue samples were obtained mainly from a mining area in East China
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Focusing on various problems in coal gangue detecting and recognising algorithms such as limited receptive field slow convergence rate and low accuracy of small particle recognition this paper proposes a coal gangue detection and recognition algorithm based on deformable convolution YOLOv3 DCN YOLOv3
Coal gangue samples are taken from Changcun Coal Mine in Lu an Coal Mining Industry of Shanxi Coal gangue was crushed and sieved to 60 100 meshes mm using E s crusher PE60X100 produced from Hongyu Instrument and Equipment Co Ltd Hebei prepared coal gangue samples denoted as as received needs to be activated
