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Laboratory Evaluation of Quartz Dust Capture of Irrigated-filter Collection Systems for Continuous Miners.

Authors
Colinet-JF; McClelland-JJ; Erhard-LA; Jankowski-RA
Source
MISSING :14 pages
Link
NIOSHTIC No.
10008215
Abstract
The U.S. Bureau of Mines conducted a series of laboratory tests in a full-scale model to determine the respirable quartz dust capture efficiency of an irrigated-filter collection system while testing different filter densities, different filter materials, preconditioning water sprays, and wetting additives in the spray water. Impactor samplers were operated upstream and downstream of the filter unit to determine overall dust collection efficiency. The impactor filters containing the 0.7- to 4.7-Um size fractions were analyzed for quartz content, and these data were used to calculate quartz dust collection efficiency. The results of this testing indicated that (1) increased filter density improved quartz dust collection, but also resulted in a significant increase in pressure drop across the filter, (2) an alternate synthetic filter material improved dust collection without increasing pressure drop, (3) preconditioning sprays mounted in the system ductwork can have a beneficial effect on dust collection, and (4) additives to the spray water did not significantly increase dust collection.
Publication Date
19900101
Document Type
IH; Report of Investigations;
Fiscal Year
1990
NTIS Accession No.
NTIS Price
Identifying No.
RI 9313
NIOSH Division
PRC;
Source Name
MISSING
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