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Evaluation of charged water sprays for dust control.

Authors
McCoy JF; Melcher J; Valentine JW; Monaghan D; Muldoon T; Kelly J
Source
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, OFR 98-83, Contract-H0212012, 1983 Jan; :1-150
Link
NIOSHTIC No.
10002927
Abstract
Charged sprays and fog were evaluated for reducing respirable dust concentrations. Charged spray technology was reviewed for effectiveness, equipment, and theoretical considerations. A mathematical model was developed for predicting dust reduction efects. Laboratory tests were made showing charged spray is considerably more effective at reducing dust on a unit water basis than hydraulic spray. Positive and negative sprays are equally effective. Combined polarity sprays are considerably less effective than either polarity alone. Charged sprays are an available dust control technique best suited to applications where water usage must be limited and long contact time between spray and dust is possible.
Keywords
Underground mining; Dust control; Spraying; Electric charge; Drops; Liquids; Mathematical models; Electrostatic precipitation; Field tests; Charged water sprays
Publication Date
19830101
Document Type
CP; Final Contract Report
Fiscal Year
1983
NTIS Accession No.
PB83-210476
NTIS Price
A09
Identifying No.
OFR 98-83; Contract-H0212012
NIOSH Division
TCRC
Source Name
Evaluation of charged water sprays for dust control.
State
MN; MA
Performing Organization
Foster-Miller, Inc., Waltham, MA 02254
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