Results 21 to 30 of about 5,145 (216)

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

open access: yesProcesses
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
openaire   +2 more sources

Relationship between long pressure short extraction dust removal performance and dust source movement path in comprehensive heading face of coal mines [PDF]

open access: yesMeitan xuebao
Long pressure short extraction ventilation and dust removal method is one of the effective methods for removing high mass concentration dust in the excavation area of coal mine comprehensive heading face. Especially, the local flow field generated by the
Bingyou JIANG   +4 more
doaj   +2 more sources

Influencing factors of coking coal dust explosion pressure and flame and effect of inert dust on its explosion suppression

open access: yesScientific Reports, 2022
Coking coal is a precious resource in the world and an important raw material for the production of steel, but it is easy to cause explosion accidents in the process of coking coal mining, which is very detrimental to safe production.
Tianqi Liu   +5 more
doaj   +1 more source

Marcasite at the Permian‐Triassic Transition

open access: yesGeophysical Monograph Series, Page 377-399., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Elena Lounejeva   +7 more
wiley  

+2 more sources

High Prevalence of Respiratory Symptoms Among Workers in the Development Section of a Manually Operated Coal Mine in a Developing Country: A Cross Sectional Study. [PDF]

open access: yes, 2007
Few studies of miners have been carried out in African countries; most are from South Africa, where the working conditions are assumed to be better than in the rest of Africa.
Mamuya, Simon H D   +9 more
core   +1 more source

Research on quantitative model of coal dust settlement effect based on multiple regression and path analysis

open access: yesMeikuang Anquan, 2022
In order to study the influencing factors of coal dust settlement effect and quantitatively express the relationship between the factors, based on the industrial analysis of coal sample, surface tension experiment and settlement experiment, the ...
WANG Jianguo   +2 more
doaj   +1 more source

Research on the minimum ignition temperature variation law of coal dust cloud with different coal quality

open access: yesGong-kuang zidonghua, 2019
In order to research the minimum ignition temperature variation law of coal dust cloud with different coal quality, eight coal samples including lignite, long-flame coal, non-caking coal, gas coal, charred coal, lean coal, meagre coal and anthracite were
LIU Tianqi
doaj   +1 more source

Use of mineral magnetic concentration data as a particle size proxy: a case study using marine, estuarine and fluvial sediments in the Carmarthen Bay area, South Wales, U.K. [PDF]

open access: yes, 2007
Compositional (non-magnetic) data can correlate strongly with particle size, which deems it appropriate as a particle size proxy and, therefore, a reliable means of normalising analytical data for particle size effects.
Walden, John   +3 more
core   +1 more source

Development of a compact excavator mounted dust suppression system [PDF]

open access: yes, 2013
This paper reports on the investigation of an excavator mounted dust suppression system for demolition and construction activities. Ever increasing pressure is placed on contractors to improve their environmental performance, especially dust emissions ...
Cheung, Wai Ming, Wallace, Kieran
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

Home - About - Disclaimer - Privacy