Results 161 to 170 of about 4,692 (194)

The effects of coal dust concentrations and particle sizes on the minimum auto‐ignition temperature of a coal dust cloud

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, Jafar Zanganeh, Behdad Moghtaderi   +2 more
openaire   +1 more source

Characterization of nano-to-micron sized respirable coal dust: Particle surface alteration and the health impact

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
openaire   +2 more sources

The effect of coal particle size on colorimetric analysis of roadway dust

Journal of Loss Prevention in the Process Industries, 2001
Colorimetric 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.
openaire   +4 more sources

Effects of dust concentration, particle size, and crude oil concentration on the explosion characteristics of oil-immersed coal dust

Fuel
Zhenmin Luo, Chi-Min Shu
exaly   +2 more sources

Variability of Particle Size-Specific Fractions of Personal Coal Mine Dust Exposures

AIHAJ, 1995
This 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, P, Hewett, T G, Robins, R, Haney   +3 more
openaire   +2 more sources

An Efficient Segmentation Model With Multipath Attention Mechanism Enabling Particle Size Characterization of Coal Dust

IEEE Transactions on Industrial Informatics
Zheng Wang, Xufei Liu, Zhaoxiang Ji
exaly   +2 more sources

Prevention and suppression of coal dust explosion in underground coal mines: Role of rock dust type, particle size, proportion, concentration, and thermal properties

Advanced Powder Technology
Aashish Sahu, Devi Prasad Mishra
exaly   +2 more sources

Experimental investigation on the impact of water immersion time and particle size on the ignition characteristics of coal dust

Journal of Loss Prevention in the Process Industries
Chunmiao Yuan, Zhengdong Liu
exaly   +2 more sources

Particle-size effects on the distribution of fuel nitrogen in one-dimensional coal-dust flames

Symposium (International) on Combustion, 1988
Measurements of the distrubution of fuel nitrogen as a function of residence time in fuel-rich, one-dimensional, bituminous, pulverized-coal/O2/Ar flames are reported. A complete accounting of the major nitrogen-containing species, HCN, NO, NH3, N2, and solid-phase nitrogen, was obtained for three different particle size distributions.
K. Clark Midkiff, Robert A. Altenkirch
openaire   +1 more source

A Methodology for Determining the Mineral Content and Particle Size Distribution of Airborne Coal Mine Dust

Applied Industrial Hygiene, 1986
Abstract Exposure to airborne dust in coal mines has caused respiratory disease in coal miners. The causal agent in these diseases remains unknown, although the minerals found in and around the coal seam have been implicated. Toxicological studies designed to establish the effect of different mineral combinations and concentrations are lacking because ...
Terrence J. Stobbe, Ralph W. Plummer, Hyunwook Kim, William G. Jones   +3 more
openaire   +1 more source