Field evaluation of air-blocking shelf for dust control on blasthole drills

Autor:	J. Drew Potts, W. Randolph Reed
Rok vydání:	2011
Předmět:	Engineering Drill business.industry Airflow Drilling Geology Field tests Geotechnical Engineering and Engineering Geology Respirable dust Mining engineering Management of Technology and Innovation Shroud Dust control business Earth-Surface Processes
Zdroj:	International Journal of Mining, Reclamation and Environment. 25:32-40
ISSN:	1748-0949 1748-0930
DOI:	10.1080/17480930.2011.540376
Popis:	In previous studies, an air-blocking shelf has been shown to be successful in reducing respirable dust leakage from the drill shroud in a laboratory setting. Dust reductions of up to 81% were achieved with the shelf under operating conditions consisting of a 1.9:1 collector-to-bailing airflow ratio and a 5.1-cm gap between the shroud and ground. Recent research focused on evaluating the shelf on two actual operating blasthole drills, in much more severe environments. In the field, the shelf reduced dust levels in the areas surrounding one operating blasthole drill by 70%. Dust reductions measured in the immediate vicinity of the shroud were reduced by 66% at one mine and 81% at the other mine. These field tests confirm that the air-blocking shelf is useful for reducing respirable dust generation from blasthole drills.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f69a51c1af809f94146b4f714c29d2a9 https://doi.org/10.1080/17480930.2011.540376 Zobrazit plný text záznamu