Results 111 to 120 of about 5,148 (219)

Compound preparation and performance evaluation of biodegradable dust suppressant agent for ultrafine coal dust

The problems such as poor wettability of ultrafine coal dust (mass fraction of coal dust with a particle size less than 5 μm is not less than 50%) have seriously restricted the effect of mine dust control.
Xiang HAN, Qirui WANG, Anning ZHOU, Kanshe LI, Gang LI, Qiulin LI, Qiuhong WANG, Yan JIN, Fuxin CHEN   +8 more
core   +1 more source

Non-conforming rock dust [PDF]

"In September 2011 as part of an ongoing investigation, the National Institute for Occupational Safety and Health (NIOSH) determined that rock dust not conforming to the requirements in 30 CFR Section 75.2 for particle size and caking properties is being

core  

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

Meitan 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, Yifan WANG, Hanyi LIN, Haoyu WANG, Yang ZHAO   +4 more
doaj   +1 more source

Sci Total Environ [PDF]

Background:Despite decreasing US consumption, over 90 million metric tons of coal were exported by the US in 2023, requiring significant infrastructure for transport, handling, and storage of coal at export terminals.

core  

Particle size fractionation of soil containing coal and combusted particles

, 1999
Standard procedure for dispersing natural soils for particle size fractionation can be too aggressive for soil containing coal and other organic particles from coal industries.
Schmidt, M., Rumpel, C., Kögel-Knabner, I.   +2 more
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A Numerical Simulation of the Coal Dust Migration Law in Directional Air Drilling in a Broken Soft Coal Seam

Abundant industrial experiences have shown that directional air drilling technology is effective for gas drainage when drilling broken and soft coal seams.
Zichen Han, Xianyu Yang, Jihua Cai, Jie Zhang, Ningping Yao, Chan Chen, Tianzhu Chen   +6 more
core   +1 more source

Study on mechanism of air distribution volume's influence on airflow, dust migration and spray dust reduction in fully mechanized caving face. [PDF]

Sci Rep
Hongjie Z, Shaocheng G, Tian Z, Deji J, Xi C, Xingyu C.   +5 more
europepmc   +1 more source

Dust dispersion and prevention in deep concave open-pit coal mines. [PDF]

Sci Rep
Long Y, Song Z, Wu L, Wen Y.
europepmc   +1 more source

Thermal and electrical ignitability of dust clouds [PDF]

"The Bureau of Mines conducted a comprehensive laboratory study of the thermal ignitability of various carbonaceous dust clouds with particular emphasis on various ranks of coal dust. The tests were conducted using a new 1.2-L furnace.

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Physicochemical characteristics and oxidative potential of size-segregated respirable coal mine dust: Implications for potentially hazardous agents and health risk assessment

The health risks associated with exposure to respirable dust in coal mines have been attracted much attention by an increasing number of researchers.
Moreno, Natalia, Uzu, Gaëlle, Sola, Patricia Córdoba, Zhuang, Xinguo, Trechera, Pedro, Shangguan, Yunfei, Li, Jing, Querol, Xavier, Li, Baoqing   +8 more
core   +1 more source