Results 11 to 20 of about 43,826 (248)

Characterization of Particle Size and Composition of Respirable Coal Mine Dust [PDF]

Minerals, 2021
Respirable coal mine dust (RCMD) particles, particularly the nano-sized fraction (<1 μm) of the RCMD if present, can cause severe lung diseases in coal miners. Characterization of both the particle size and chemical composition of such RCMD particles remains a work in progress, in particular, with respect to the nano-sized fraction of RCMD.
Lei Pan, Seán Golden, Shoeleh Assemi, Marc Freddy Sime, Xuming Wang, Yuesheng Gao, Jan D. Miller   +6 more
exaly   +5 more sources

Chemistry and particle size distribution of respirable coal dust in underground mines in Central Eastern Europe [PDF]

International Journal of Coal Science & Technology, 2022
AbstractDespite international efforts to limit worker exposure to coal dust, it continues to impact the health of thousands of miners across Europe. Airborne coal dust has been studied to improve risk models and its control to protect workers. Particle size distribution analyses shows that using spraying systems to suppress airborne dusts can reduce ...
Pedro Trechera, Xavier Querol, Robert Lah, D. Johnson, Aleksander Wrana, Ben J. Williamson, Teresa Moreno   +6 more
exaly   +7 more sources

Effects of particle size and moisture on respirable coal dust generation in pakistan’s informal bituminous mines [PDF]

Scientific Reports
Respirable coal dust remains a major occupational hazard in informal mining operations in Pakistan, where high-ash, low-moisture bituminous coals are handled without engineered dust-control systems.
Sohail Khan, Ziling Song
doaj   +3 more sources

Particle size change of solid residue and flammability analysis of gaseous residue of lignite coal dust explosion

Gong-kuang zidonghua, 2021
The solid and gaseous residues of coal dust explosion are the physical evidence for analyzing the detonation site and propagation path and the basis for deploying rescue work.
ZHU Chao, WANG Hao
doaj   +3 more sources

Effects of intrinsic properties, particle size, bulk density and specific gravity on thermal properties of coal dusts [PDF]

Environmental Science and Pollution Research, 2022
Abstract Thermal properties of pulverized coal govern the heat transfer and greatly influence the coal dust explosion and spontaneous combustion processes. This study measures the thermal properties of five coal samples at six distinct particle sizes using an advanced Thermal Property Analyzer.
Aashish Sahu, Devi Prasad Mishra
openalex   +3 more sources

EXPERIMENTAL STUDY OF THE EFFECTS OF COAL DUST PARTICLE SIZE ON LAMINAR BURNING VELOCITY IN A MIXTURE OF COAL DUST AND METHAN

Rudarsko-geološko-naftni zbornik, 2019
This study investigates the effect of variations of coal dust particles size on the rate of burning of coal dust particles in a 2-liter closed chamber. Coal dust was selected from three different mines with different sizes (149μm, 125μm, 105μm, 74μm, 63μm, 53μm, 44μm, 37μm) for explosion testing in a closed chamber of 2-liters.
Hadis Moradi, Farhang Sereshki, Mohammad Ataei, Mohsen Nazari   +3 more
openalex   +4 more sources

Updating “Characteristics of respirable dust in eight Appalachian coal mines: A dataset including particle size and mineralogy distributions, and metal and trace element mass concentrations” with expanded data to cover a total of 25 US mines

Data in Brief, 2022
A total of 171 sets respirable dust samples were collected from 25 underground coal mines in several regions of the United States. One sample from each set was analyzed by scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM-EDX ...
Cigdem Keles, Maria Jaramillo Taborda, Emily Sarver   +2 more
doaj   +2 more sources

Adhesion Behavior of Underground Coal Dust with Fused Silica: Effects of Relative Humidity and Particle Size [PDF]

Processes
Coal dust particles adhering to a camera lens reduce its light transmittance, which deteriorates the performance of the camera and may lead to serious problems with mining equipment that requires visual ability. Aiming at improving coal dust removal and cleaning technologies, the adhesion behavior of coal dust with fused silica is studied here ...
Shujun Zhou, Yue Yang, Hongfei Shang
openalex   +2 more sources

Effect of particle size of coal dust on explosion pressure

Journal of Measurement Science and Instrumentation, 2019
The effect of the particle size of coal dust on explosion pressure and the rising rate of explosion pressure is studied. Three coal dusts from Lingan Coal Mine in Canada and Datong Coal Mine in China are selected to test.
JIAO Feng-yuan, ZHANG Hua-rong, CAO Wei-guo, FANG Fan   +3 more
doaj   +1 more source

Characteristics of respirable dust in eight appalachian coal mines: A dataset including particle size and mineralogy distributions, and metal and trace element mass concentrations

Data in Brief, 2019
Respirable dust samples were collected in several key locations of eight underground coal mines in central and northern Appalachia. In total, there were 76 unique sampling events (i.e., specific location in a specific mine).
Emily Sarver, Cigdem Keles, Mohammad Rezaee   +2 more
doaj   +2 more sources