期刊文献+

Chemistry and particle size distribution of respirable coal dust in underground mines in Central Eastern Europe 被引量:1

下载PDF
导出
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 concentrations 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,DD_(500)).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)variations 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 DD_(500),probably due to relatively lower levels of organic matter.Mass concentrations of all elements observed in this study remained below occupational exposure limits.
出处 《International Journal of Coal Science & Technology》 EI CAS CSCD 2022年第1期200-216,共17页 国际煤炭科学技术学报(英文)
基金 European Commission Research Fund for Coal and Steel(Grant Agreement Number–754205) Generalitat de Catalunya(SGR41).Centre of Excellence Severo Ochoa—Spanish Ministry of Science and Innovation(Project CEX2018-000794-S).
  • 引文网络
  • 相关文献

同被引文献2

引证文献1

相关主题

;
使用帮助 返回顶部