Results 31 to 40 of about 1,811 (137)
, 2023 In order to solve the problems of serious dust pollution and difficult dust removal in fully mechanized coal mining face, we conduct research on the concentration and particle size field of dust in the fully mechanized mining face of Shoushan No.1 Mine ...
LI Xinlong, YANG Yang, HU Yating
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Effect of Ignition Delay Time on Explosion Characteristics of Methane and Coal Dust Hybrid Mixtures
Meikuang Anquan, 2020 To study the effect of coal dust on methane explosion characteristics under different turbulent environments, based on 20 L explosion sphere, the mixed explosion experiments of 0 g/m3, 25 g/m3, 50 g/m3,100 g/m3, 200 g/m3 coal dust and 6.5%, 9.5%, 12 ...
WANG Xiaobin
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Optimization and Improvement of Dust Removal System of Continuous Shearer in Daliuta Coal Mine
, 2020 In view of the fact that the existing continuous coal mining machine dust removal system can not solve the problem of dust overrun during the operation of the driving face of Shendong Daliuta Coal Mine, we point out the design defects of the existing ...
ZHANG Jiangshi, WANG Wenhui, LIU Shaocan
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Application of optical narrow-band mirrors in sensor of concentration of dust in coal mines
Journal of Physics: Conference Series, 2021 Abstract The article presents a new design of the sensor for measuring dust, which is based on the effect of absorption of optical radiation passing through the dust layer. Fundamentally new is the use of a powerful low-cost LED, the spectral part of the radiation range required for measurement of which is formed by the structure of ...
Yu A Novikova, M B Ryzhikov
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Geochemistry and risk assessment of street dust in Luanda, Angola, a tropical urban environment
, 2005 A total of 92 samples of street dust were collected in Luanda, Angola, were sieved below 100 μm, and analysed by ICP-MS for 35 elements after an aqua-regia digestion.
Miguel García, Eduardo de +1 more
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Journal of Spectroscopy, 2016 Respirable coal particle generated during underground mining is the main cause for gas-dust explosions and coal workers’ pneumoconiosis (CWP) which needs accurate monitoring especially on its concentration.
Wen-Zheng Wang +2 more
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Assessment and Modelling of Dust Concentration in an Opencast Coal mine in India. [PDF]
Global NEST Journal, 2015 <div> <p>Dust pollution is a major problem in opencast mines. Many activities are associated with generation of dust that makes a cloud of pollutant at the work environment and the surrounding areas. Activities as drilling, blasting, transportation, surface miner etc. are the principle sources of generation of dust in mines.
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An Experimental Study on Wetting of Coal Dust by Surfactant Solution
Advances in Materials Science and Engineering, 2020 Surfactants can improve the wetting performance of the dust-reduction spraying water, thus improving the dust-reduction effect by spray. In this study, the performance of surfactant solution in wetting coal dust was investigated through experiments.
Yidan Jiang +4 more
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Nephelometry and turbidimetry to assess concentration and dispersion of coal dust in mines
IOP Conference Series: Earth and Environmental Science, 2018 The article considers the model of the optical instrument to measure coal dust concentration in mines based on the turbidimetric and nephelometric methods. The calculated data on the intensity of transmitted and scattered waves depending on coal dust concentration and on the size of coal dust particles are presented.
VP Yushchenko, VN Legky, DE Demidov
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Gong-kuang zidonghuaThe humidity in mines significantly affects the monitoring quality of coal mine dust concentration. This study aims to improve the precision of dust concentration monitoring in high-humidity underground coal mine conditions, through investigating the ...
ZHANG Anran
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