installation de concassage indien 120 tph

Utilization of coal gangue as coarse aggregates in structural

2021.1.25  It is expected that the performance of concrete-filled steel tubular stubs with CGC is better than that of reinforced concrete stubs with CGC. In this paper, coal

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Breakage mechanism and pore evolution characteristics of gangue ...

2022.6.30  Environmental problems caused by coal mining: (a) surface subsidence; (b) water and soil loss; (c) pollution of the gangue mountain. Full size image. Gangue is a

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Co-combustion and emission characteristics of coal gangue

2015.2.18  The combustion of coal gangue, coal and their blends at different proportions was systematically investigated in regarding to the combustion

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A review of coal gangue identification research ... - Springer

2022.12.26  Introduction China is a major energy-consuming country and its energy reserves are characterized by limited amounts of oil, low amounts of gas, and relatively

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On-Site Measurement on Compaction

2021.10.20  Based on the compression test of broken gangue, Li et al. (2018) reconstructed the gangue particles through 3D scanning and

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Research on the Strong Generalization of Coal Gangue

2023.10.13  A coal gangue image recognition method based on complex conditions is proposed to address the current issue of image-based coal gangue recognition being

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Comprehensive utilization and environmental risks of coal gangue: A ...

2019.12.1  Coal gangue, a solid waste generated during coal mining and washing, accounts for approximately 10%–15% of the total coal production. The accumulative

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Sustainability Free Full-Text Experimental Study

2020.5.11  The crushed gangue materials which are filled into the goaf in solid-backfilling coal mining become the main body of bearing the overburden after the tamping process. Its resistance to deformation is

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Using Chinese Coal Gangue as an Ecological

2022.6.26  This paper reviews the properties and preparation methods of Chinese gangue aggregate, studies the influence of gangue aggregate on concrete properties and the prediction model of gangue

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Study on the mechanical behavior and micro-mechanism of

2022.7.4  In this study, coal gangue was used to replace the fine and coarse aggregates. Coal gangue mortar (CGM) and CGC samples were prepared in the test

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On-Site Measurement on Compaction

2021.10.20  Gangue is the main backfilling material in solid backfilling mining, and its compaction characteristics determine the overburden control effect and surface subsidence. Under the action of compaction force and

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Coal gangue recognition based on spectral

2023.1.19  The identification of coal gangue is of great significance for its intelligent separation. To overcome the interference of visible light, we propose coal gangue recognition based on multispectral imaging and

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A review of coal gangue identification research ... - Springer

2022.12.26  Another point to note is that large amounts of extracted coal gangue accumulation causes severe damage to ecological environments. Heaps of gangue cause soil erosion, occupy land resources, and pollute water resources and soil resources (as shown in Fig. 4).The waste gangue generated by mining is difficult to handle, is widely

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Research on coal gangue classification recognition method

2023.10.7  For the traditional machine learning methods rely on manual experience and deep learning classification model depth and complex structure, resulting in poor gangue classification performance, this paper proposes a coal gangue recognition method (CNN-SVM) based on the combination of convolutional neural network (CNN) and

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Rheological and mechanical performance analysis and

2023.11.16  Cemented backfill mining is a green mining method that enhances the coal mining rate and the safety of mined-out regions. To transport the cemented gangue backfill material (CGBM) into the mined-out regions, it is essential to ensure high flowability and adequate compressive strength after hardening. Based on the response surface

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Breakage mechanism and pore evolution characteristics of gangue ...

2022.6.30  Filling of gangue formed in coal mining is an effective means to realize green mining in coal mine. The key of gangue filling mining is to accurately understand the breaking mechanism and pore evolution of gangue under load. Therefore, in this paper, firstly, the yield criterion of granular materials based on radius of curvature and contact

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Comprehensive utilization and environmental risks of coal gangue: A ...

2019.12.1  Coal gangue is a solid waste generated from coal mining and washing processes. It has potential applications in various industries, but also poses environmental risks. This article presents a comprehensive review of the current status, challenges and prospects of coal gangue utilization and environmental management. It also provides

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Frontiers Mechanical properties and microscopic

1 Introduction. Hugh extraction and consumption of natural aggregate has brought a heavy burden to the ecological environment. At the same time, a large amount of coal gangue (Huang et al., 2018; Li and Wang, 2019; Yiran et al., 2020) is produced in process of coal mining.Due to its physical and chemical properties highly similar to those of natural

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Compaction characteristics and energy dissipation of crushed gangue ...

2023.6.5  Sample preparation. The coal gangue samples were collected 15 times and approximately 50 kg each time from the waste dump in the Renjiazhuang coal mine, as shown in Fig. 3a, which is located in Ningxia Hui autonomous region, China. To solve the problems of the massive accumulation of coal gangue, strong ground pressure and

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Research on the Strong Generalization of Coal Gangue

2023.10.13  A coal gangue image recognition method based on complex conditions is proposed to address the current issue of image-based coal gangue recognition being greatly affected by complex conditions. First, complex conditions such as different shooting backgrounds, shooting distances, and lighting intensities are set to simulate the

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The thermal activation process of coal gangue selected from

2016.7.25  The thermal behavior of coal gangue selected from Zhungeer, Inner Mongolia Autonomous Region of China, was investigated by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, thermogravimetry (TG), derivative thermogravimetry (DTG), and scanning electron microscope (SEM). The XRD data

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Using Chinese Coal Gangue as an Ecological

2022.6.26  Coal gangue is a kind of industrial solid waste with serious ecological and environmental implications. Producing concrete with coal gangue aggregate is one of the green sustainable development

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Analysis of Influencing Factors of Gangue Ball Milling Based

2023.4.7  To study the heterogeneity and local heterogeneity of gangue particle size distribution (PSD) under ball milling, gangue from northern Shaanxi coal mine was taken as a research object. The multifractal pattern of PSD and the variation trend of characteristic parameters of gangue under different ball-to-gangue ratios and grinding times were

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Particle size distribution of coal and gangue after impact

2017.7.9  The experimental results indicate that the Rosin-Rammler distribution could accurately describe the particle size distribution of broken coal and gangue under different impact velocities, and there is a minimum overlap region when the impact velocity is 12.10 m/s which leads to the minimum mixed degree of coal and gangue, and consequently the ...

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Glass-ceramics fabricated by efficiently utilizing coal gangue

2020.3.17  The coal gangue contains high silica of ~62 wt.% and high alumina of ~30 wt.% and thereby is a very suitable raw material to fabricate the high-performance glass-ceramics. The crystal phase and its size and content in the sintered glass-ceramics are critical factors determining the properties. In general, mullite and other crystals

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fr/charbon la plus avancée gangue concasseur.md at main

Contribute to ziyoujudian/fr development by creating an account on GitHub.

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Influence of Anti-Mud Agent on the Performance of Gangue

2023.6.18  Pass the gangue aggregate through a 0.075 mm square sieve, take part of the gangue powder under the sieve, weigh the raw materials according to Table 1, stir and mix them for 30 min, so that FDN and KN could be fully dissolved in water and adsorbed on the soil surface, and then stand for 24 h, after the soil was fully precipitated (Fig. 2 ...

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Mechanical and Acoustic Emission Behavior of Gangue

2019.10.11  The application of gangue concrete can be an effective method to solve the massive gangue heap and shortage of raw materials of concrete by replacing the gravel and river sand with crushed gangue. An Acoustic emission (AE) is one of the non-destructive testing methods that can be used for damage detection of the gangue concrete structure.

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Analysis of characteristics of diffusion tortuosity of fine

2023.9.25  The diffusion characteristics of fine-grained gangue slurry are significant for gangue consumption and ecological environment protection, especially in underground mines. Therefore, based on the theory of porous medium transportation, this paper establishes a 3D caving zone model, proposes methods for reconstructing, statistical,

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欧路词典英汉-汉英词典 gangue是什么意思_gangue的中文 ...

1. Sulfide ores with BaSO4 as the main gangue , two kinds of slags , speiss and As-Cu alloy have been identified. 在还原熔炼中添加了 ，冶炼的最终产品是 铜合金，还原熔炼产生的 冰铜（黄渣） 副产品中的铜通过返料操作在冰铜熔炼工序得以回收。. 2.

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Energies Free Full-Text Automatic Coal and Gangue Segmentation ...

2020.2.14  Sorting gangue from raw coal is an essential concern in coal mining engineering. Prior to separation, the location and shape of the gangue should be extracted from the raw coal image. Several approaches regarding automatic detection of gangue have been proposed to date; however, none of them is satisfying. Therefore, this paper aims

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Processes Free Full-Text Gangue Source Reduction

2023.8.22  The precise identification of damp, sticky coal gangue; efficient jet nozzle separation; and process layout in a narrow, restricted space are essential technologies for gangue source reduction based on underground gangue photoelectric separation, which is critical for the long-term growth of coal mines. In this paper, the X-ray absorption fine

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fr/concasseur de gangue et fournisseur de moulin.md at

Contribute to hedaokuan/fr development by creating an account on GitHub.

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Prediction of compression and deformation behaviours of gangue

2020.6.20  Coal mining causes serious ecological and environmental damage. The crushed gangue is backfilled into underground goaf, which not only inhibits mining-induced subsidence but also reduces accumulation of waste on the ground: however, the effects of backfilling with gangue backfill materials in goaf are affected by a combination of multiple

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Rheological properties of cemented gangue backfill material

2023.2.9  The study herein was intended to evaluate the rheological properties of cemented gangue backfill material (CGBM). For this purpose, the rheological test of CGBM with fractal aggregate particle size distribution was carried out, and variations of static yield stress, dynamic yield stress, and plastic viscosity were investigated as a function of

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Diffusion law of coal gangue slurry and the application of

2023.8.14  Quantitative analysis of the whole rock minerals of coal gangue was conducted using a Nippon Nikkei ultima 4 X-ray diffractometer, and the test results are shown in Fig. 3.According to the ...

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Research on Coal Gangue Recognition Based on Multi

2023.7.5  The over-exploitation of resources caused by the increasing coal demand has resulted in a sharp increase in solid waste emissions mainly gangue, which has made the burden on the environment, economy, resources, and society of our country heavier. In order to achieve a balance between energy consumption and solid waste emission in the

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Study on the mechanical behavior and micro-mechanism of

2022.7.4  For coarse aggregates, the apparent density of the crushed coal gangue was 2275.7 kg/m 3, whereas that of natural gravel was 2860.6 kg/m 3.As shown in Fig. 3, the microstructure of the coal gangue was loose and porous compared to the homogenous morphology of natural gravel.In addition, the particle size distributions of fine aggregates,

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Integrated green mining technology of “coal mining-gangue

2021.8.24  In Tangshan Mine, there are four engineering problems, including the layout of multiple seam mining system, serious environmental damages caused by gangue accumulation and surface collapse, nearly 100 million tons of three under coal (coal trapped under buildings, water bodies, and railways) to be released, and the control accuracy of

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