Results 181 to 190 of about 5,148 (219)
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Study on explosion suppression of coal dust with different particle size by shell powder and NaHCO3
Fuel, 2021Abstract In order to improve the pertinence of coal dust explosion suppression technology, a 20 L spherical explosion characteristic test system and a dust minimum ignition energy test device were used to study the suppression differences of different particle sizes of coal dust with inert and active explosion suppressants.
Xiangrui Wei, Yaqing Zhang
exaly +2 more sources
Journal of Cleaner Production, 2020
Abstract Respiratory dust and dust fall from the mechanized excavation faces of coal mines are crucial issues that require immediate attention. The dust fall technique for two-phase gas–water spraying is effective in solving these issues. We designed a spray dust fall simulated experimental system to test the dust fall efficiency for six grain sizes ...
Bingyou Jiang, Wenjun Zhu, Guofeng Yu
exaly +2 more sources
Abstract Respiratory dust and dust fall from the mechanized excavation faces of coal mines are crucial issues that require immediate attention. The dust fall technique for two-phase gas–water spraying is effective in solving these issues. We designed a spray dust fall simulated experimental system to test the dust fall efficiency for six grain sizes ...
Bingyou Jiang, Wenjun Zhu, Guofeng Yu
exaly +2 more sources
A Novel Coal Dust Characteristic Extraction to Enable Particle Size Analysis
IEEE Transactions on Instrumentation and Measurement, 2021Coal particle characteristic extraction is essential to prevent dust explosions. It is traditionally analyzed by manual screening, which is relatively time-consuming and cannot automatically capture outlining. To address this issue, an accurate and automatic particle image segmentation method is highly demanded in the smart mine.
Zheng Wang 0051 +3 more
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Influence of particle size distribution on coal dust explosion sensitivity
Powder TechnologyXiaofeng Ren, Chenzi Teng
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Size Distribution Measurement of Airborne Coal Dust by Optical Particle Counters
American Industrial Hygiene Association Journal, 1974An optical particle counter has been calibrated for size distribution measurement of airborne coal dust particles. A differential electrical mobility analyzer was used with a fluidized bed dust feeder to produce uniform coal dust particles of a known size for calibration for particles
B Y, Liu +3 more
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Fire and Materials, 2017
SummaryFlash fires and explosions in areas containing an enriched combustible dust atmosphere are a major safety concern in industrial processing. An experimental study was conducted to analyse the effects of atmospheric coal dust particle sizes and concentrations on the minimum auto‐ignition temperature (MAIT) of a dust cloud.
Mohammed Jabbar Ajrash +2 more
openaire +1 more source
SummaryFlash fires and explosions in areas containing an enriched combustible dust atmosphere are a major safety concern in industrial processing. An experimental study was conducted to analyse the effects of atmospheric coal dust particle sizes and concentrations on the minimum auto‐ignition temperature (MAIT) of a dust cloud.
Mohammed Jabbar Ajrash +2 more
openaire +1 more source
Journal of Hazardous Materials, 2021
Chemical and physical properties of coal dust particles significantly influence the inhalation of respirable coal dust by miners, causing several lung diseases such as coal workers' pneumoconiosis (CWP) and silicosis. Multiple experimental techniques, including proximate/ultimate analyses, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS),
Rui Zhang, Shimin Liu, Siyang Zheng
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Chemical and physical properties of coal dust particles significantly influence the inhalation of respirable coal dust by miners, causing several lung diseases such as coal workers' pneumoconiosis (CWP) and silicosis. Multiple experimental techniques, including proximate/ultimate analyses, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS),
Rui Zhang, Shimin Liu, Siyang Zheng
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The effect of coal particle size on colorimetric analysis of roadway dust
Journal of Loss Prevention in the Process Industries, 2001Colorimetric analysis of roadway dust is currently a method for monitoring the incombustible content of mine roadways within Australian underground coal mines. To test the accuracy of this method, and to eliminate errors of judgement introduced by human operators in the analysis procedure, a number of samples were tested using scanning software to ...
Kizil, M. S., Peterson, J., English, W.
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Variability of Particle Size-Specific Fractions of Personal Coal Mine Dust Exposures
AIHAJ, 1995This study estimated the ratio of the tracheo-bronchial dust fraction to the fraction collected by a respirable dust sampler for a variety of job classifications found in conventional, continuous, and longwall coal mining sections. The ratios could then be applied in epidemiologic studies to existing respirable dust measurements to estimate thoracic ...
N S, Seixas +3 more
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