Results 21 to 30 of about 6,493 (288)

Research on perception method of coal mine gas and coal dust explosion based on explosion sound recognition

open access: yesGong-kuang zidonghua, 2023
The characteristics of coal mine gas and coal dust explosion are analyzed. The gas concentration changes suddenly. The ambient temperature rises rapidly. The air pressure rises suddenly. It produces fireballs and smoke.
SUN Jiping   +3 more
doaj   +1 more source

Comparative Analysis of Fire and Explosion Properties of Lycopodium Powder

open access: yesEnergies, 2023
Lycopodium (L.) clavatum powder, due to its uniform particle size distribution and low equilibrium moisture content, is often used as a reference material and a calibration benchmark for dust combustion and dust explosion studies.
Bożena Kukfisz   +4 more
doaj   +1 more source

Experimental Study on the Influence of Different Coal Species on Gas and Coal Dust Explosion

open access: yesMeikuang Anquan, 2020
To further explore the propagation law of gas coal dust explosion with different coal species involved, 3 kinds of representative coal dust were tested in a self-made semi-enclosed pipe, and the flame propagation speed, flame surface luminescence ...
JING Guoxun, SHAO Hongyuan, WU Yulou, GUO Shaoshuai, LIU Chuang, ZHANG Shengqi
doaj   +1 more source

On the Features of of Dust Explosions [PDF]

open access: yes, 2011
The research presented in this paper focuses on the importance of the prevention and mitigation of dust explosions by knowing the effect of single and combined parameters on the explosion severity. Experiments and a companion modelling study were conducted at varying the size fractions, the ignition source, the initial turbulence level, the ...
Almerinda Di Benedetto   +3 more
openaire   +2 more sources

Dust emission in powder handling: Free falling particle plume characterisation [PDF]

open access: yes, 2009
Dust generation during solids handling, principally from the free falling of bulk materials and their impact on stockpiles, can be a health threat for operators and a cause of dust explosions.
Ansart, Renaud   +2 more
core   +1 more source

Dust formation and evolution in the ejecta of core-collapse supernovae [PDF]

open access: yes, 2015
Observations of local supernovae over the past couple of decades have reported the presence of dust in the ejecta. The dust masses inferred from observations in mid-infrared and submillimeter wavelengths differ by a factor of 10^2 to 10^4 The composition
Sarangi, Arkaprabha
core   +1 more source

Retracted: Effect of coal dust parameters on gas‐coal dust explosions in pipe networks

open access: yesEnergy Science & Engineering, 2022
To study the effects of particle size of coal dust and mass concentration of coal dust on gas‐coal dust explosions, we conducted sedimentary gas‐coal dust explosion experiments using a pipe network system that included multiple components and individual ...
Jia Jinzhang   +4 more
doaj   +1 more source

Dust emission by powder handling: Comparison between numerical analysis and experimental results [PDF]

open access: yes, 2009
The dust generation occurring during the handling of bulk materials in free falls or at the impact on a stockpile can be a source of danger for the operators health.
Charru, François   +5 more
core   +1 more source

Research of influence factors on characteristic parameters of coal dust explosio

open access: yesGong-kuang zidonghua, 2014
Influence of particle size, concentration and ignition energy of coal dust on the maximum pressure and its rising rate of coal dust explosion were researched by use of 20 L spherical explosion equipment. The research results show that under the condition
LIU Zhentang, GUO Rulin, XI Runze
doaj   +1 more source

An overview of explosion severity on dust explosion [PDF]

open access: yes, 2011
In spite of extensive research and development to prevent and mitigate dust explosions in the process industries, this phenomenon continues to represent a constant hazard to industries including manufacturing, using and handling of combustible dust ...
Tuan Norhafizah binti Tuan Zakaria
core   +2 more sources

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