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Silica collection concerns when using flooded-bed scrubbers.

Authors
Colinet-JF; Jankowski-RA
Source
Society for Mining, Metallurgy, and Exploration Annual Meeting, 1998 Mar; :1-7
Link
NIOSHTIC No.
20000127
Abstract
Laboratory tests were conducted to evaluate the silica collection efficiency of flooded-bed scrubbers with six different filter panel designs and at two operating velocities. Test results indicated that reductions in filter density negatively impacted respirable dust collection. Silica collection efficiency for the least dense filter was as much as 33% lower than the collection efficiency of the most dense filter. At the low operating velocity, the least dense filter allowed over 40% of the respirable silica dust in the scrubber intake air to pass through the unit, where it would be discharged back into the mine environment. Operation of the scrubber at the higher test air velocity increased silica collection efficiency, regardless of the filter panel tested. The density of the filter panels also impacted the quantity of air that is moved through the scrubber, with higher density filters reducing scrubber airflow. For each filter, the relationship between dust collection efficiency and air moving capacity must be considered to determine overall effectiveness for specific mine applications.
Keywords
Respirable-dust; Mining-industry; Underground-mining; Pulmonary-system-disorders; Silicosis; Coal-mining; Miners
Contact
National Institute for Occupational Safety and Health, Pittsburgh Research Laboratory, Pittsburgh, PA
CAS No.
14808-60-7
Publication Date
19980311
Document Type
Conference/Symposia Proceedings
Fiscal Year
1998
NTIS Accession No.
NTIS Price
NIOSH Division
PRL
Source Name
Society for Mining, Metallurgy, and Exploration Annual Meeting, Preprint 98-131
State
PA
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