·Airborne dust generation is one of the byproducts of coal mining processing and handling The amount of airborne total dust ATD respirable size and larger and airborne respirable dust ARD generated is of primary interest for designing the level of engineering controls needed for adequate dust abatement Laboratory crushing
·A large amount of coal dust can be generated during the mining transportation and handling of coal or coal rock such as crushing grinding or pulverisation Baskoro et al 2021 Liu and Liu 2020 Coal dust is a fugitive and combustible pollutant leading to risks for both explosion and air pollution Lu et al 2024b Ma et al 2021 Coal dust is known to manifest in
·As an important link in open pit mining production the crushing station produces a large amount of dust during the production process Dust has the characteristics of a wide spread area great
·A significant amount of airborne dust is also produced during the preparation of drilling face using LHDs due to its greater bucket thrust on rocks The dust generation in such operation may be as high as ten times greater than that of the production mucking per tonne of muck fragmented rocks Sengupta 1990
·After analysis and comparison the jaw plate with three additional teeth may produce less dust in practical application The crushing efficiency is increased by about 10% and the amount of dust generated is significantly reduced Fastening the jaw plate The jaw crusher generates frequent impact loads during the operation
·The amount of airborne total dust ATD respirable size and larger and airborne respirable dust ARD generated is of primary interest for designing the level of engineering controls needed for adequate dust abatement Laboratory crushing experiments were conducted in a wind tunnel with a roll crusher to identify relationships among crushing
·Dust constitutes a major environmental concern in many quarries with crushing suggested as the most significant source of it Bada et al 2013; Petavratzi et al 2005; Sairanen et al 2018 Dust from drilling has been previously examined in two natural stone quarries and drilling capacity affected on dust concentration at 5 m distance from the drill but the effect
·Dust constitutes one of the major environmental concerns near many aggregate quarries with crushing often being the most significant source In this study dust emissions and dispersion
·Emission of dust due to mining and crushing releases aerosols into the atmosphere A relatively less dense aerosol concentration may trap heat and increase the temperature whereas a very dense aerosol concentration may restrict the amount of solar radiation that reaches the surface Emetere et al 2017
·The work is dedicated to revealing the structural features of coals with different ranks such as anthracites metaanthracite and graphite that determine their ability to crush and form fine dust For this purpose a combination of various nanoindentation techniques and Raman spectroscopy was used The mechanical behavior of the selected coals was investigated by
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