Results 11 to 20 of about 17,396 (250)

Experimental study on ignition of methane and coal dust on the surface of high temperature heat source

open access: yesGong-kuang zidonghua, 2021
The high temperature area of coal spontaneous combustion in coal mine goaf may cause methane/coal dust explosion. Therefore, it is necessary to carry out research on coal spontaneous combustion induced methane/coal dust explosion. The current research on
WANG Yi, WANG Haiyan, ZHANG Lei, HU Lang
doaj   +1 more source

Adsorption of Tuberculin by Coal Dust [PDF]

open access: yesEpidemiology and Infection, 1931
While investigating the effects of silica dust and coal dust respectively in the production of respiratory disease in coal miners, we have been struck by the sharp contrast between silicotic coal miners in South Wales as compared with silicotic gold miners in South Africa in their respective liability to pulmonary tuberculosis.
S L, Cummins, C, Weatherall, E T, Waters
openaire   +2 more sources

Effect of coal dust parameters on gas-coal dust explosions in pipe networks

open access: yesGeomatics, Natural Hazards & Risk, 2022
To study the effects of coal dust particle size and mass of coal dust on gas-coal dust hybrid explosions, we conducted sedimentary gas-coal dust explosion experiments using a pipe network system that included multiple components and individual ...
Jia Jinzhang, Wang Fengxiao, Li Jie
doaj   +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

Comparative study of the explosion pressure characteristics of micro- and nano-sized coal dust and methane–coal dust mixtures in a pipe

open access: yesInternational Journal of Coal Science & Technology, 2020
Coal dust explosion accidents often cause substantial property damage and casualties and frequently involve nano-sized coal dust. In order to study the impact of nano-sized coal on coal dust and methane–coal dust explosions, a pipe test apparatus was ...
Bo Tan, Huilin Liu, Bin Xu, Tian Wang
doaj   +1 more source

PULMONARY RETENTION OF COAL DUSTS [PDF]

open access: yes, 1982
The principal objectives of this study were: to determine, quantitatively, coal dust retention times in the dog lung; to test the appropriateness of a pulmonary retention model which incorporates first order rate coefficients obtained from in vitro and in vivo experiments on neutron-activated coal; to acquire a temporal description of the pulmonary ...
Morrow, P.E.   +5 more
openaire   +2 more sources

Numerical Study of the Respirable Coal Dust Removal Performance of a Vortex Ventilation System at an Excavation Face

open access: yesEnergies, 2018
Coal dust is one of the most serious issues in coal mines. The miners at an excavation face have a high potential for exposure to high concentrations of coal dust. The main method for removing coal dust is by ventilation.
Xiaofei Liu   +4 more
doaj   +1 more source

Evaluation of the Risk Factors on Coal Dust Explosion in Warehouse

open access: yesMATEC Web of Conferences, 2016
Coal has been one of the major energy sources in the world. Many industries use coal as a main fuel. A coal dust explosion is one of the main hazards of coal utilization because of its massive damage.
Chanthaphasouk Latana   +4 more
doaj   +1 more source

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

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