Chemistry and particle size distribution of respirable coal dust in underground mines in Central Eastern Europe
Pedro Trechera1
Xavier Querol2
Robert Lah3
Diane Johnson4
Aleksander Wrana5
Ben Williamson4
Teresa Moreno2
1.Instituto de Diagnóstico Ambiental Y Estudios del Agua,Consejo Superior de Investigaciones Científicas,(IDAEA-CSIC),C/Jordi Girona 18-26,08034 Barcelona,Spain;Department of Natural Resources and Environment,Industrial and TIC Engineering(EMIT-UPC),08242 Manresa,Spain2.Instituto de Diagnóstico Ambiental Y Estudios del Agua,Consejo Superior de Investigaciones Científicas,(IDAEA-CSIC),C/Jordi Girona 18-26,08034 Barcelona,Spain3.Premogovnik Velenje d.d,Partizanskacesta 78,3320 Velenje,Slovenia4.Camborne School of Mines,University of Exeter,Penryn,Cornwall TR10 9FE,UK5.Department of Extraction Technology and Mining Support,Central Mining Institute(GIG),40-166 Katowice,PlacGwarkow 1,Poland
摘要：Despite 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 particulate matter concentra-tions and that coals with higher ash yields produce finer dust.There are marked chemical differences between parent coals and relatively coarse deposited dusts(up to 500 μm,DD500).Enrichments in Ca,K,Ba,Se,Pb,Cr,Mo,Ni and especially As,Sn,Cu,Zn and Sb in the finest respirable dust fractions could originate from:(ⅰ)mechanical machinery wear;(ⅱ)vari-ations in coal mineralogy;(ⅲ)coal fly ash used in shotcrete,and carbonates used to reduce the risk of explosions.Unusual enrichments in Ca in mine dusts are attributed to the use of such concrete,and elevated K to raised levels of phyllosilicate mineral matter.Sulphur concentrations are higher in the parent coal than in the DD500,probably due to relatively lower levels of organic matter.Mass concentrations of all elements observed in this study remained below occupational exposure limits.
机标关键词：distributionchemistryparticlecentralminesdustcoaleastern
论文发表日期：2022-02-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：17( 200-216 )
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