Recent trends in rock dust modifications for improved dispersion and coal dust explosion mitigation

Qingqing Huang, Rick Honaker

Research output: Contribution to journalReview articlepeer-review

28 Scopus citations

Abstract

Underground coal mine explosions is perhaps the most hazardous danger in the coal mining industries. Efforts have been made to abate the coal dust explosion by applying rock dust either dry or wet. Dry dust has the best lift characteristic which efficiently quenches the flame propagation of a potential explosion. As a trade-off, undesired respirable dust particles are thereby generated imposing a severe health hazard on coal miners. Wet dusting is an alternative to dry dusting which significantly reduces the exposure to respirable dust particles. However, wet dust is subject to adverse caking issues which lead to a drastic reduction in the dispersibility of the particles. The present work summarizes the studies conducted to date regarding the surface modification of rock dust particles for the purpose of eliminating or alleviating the problems accompanying coal mine dusting applications, meanwhile improving the dispersive properties of dust particles and the ability to suppress the coal dust explosion.

Original languageEnglish
Pages (from-to)121-128
Number of pages8
JournalJournal of Loss Prevention in the Process Industries
Volume41
DOIs
StatePublished - May 1 2016

Bibliographical note

Publisher Copyright:
© 2016 Elsevier Ltd.

Keywords

  • Coal mine
  • Dispersibility
  • Explosion mitigation
  • Rock dust
  • Surface chemistry modification

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Food Science
  • General Chemical Engineering
  • Safety, Risk, Reliability and Quality
  • Energy Engineering and Power Technology
  • Management Science and Operations Research
  • Industrial and Manufacturing Engineering

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