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Laboratory evaluation of quartz dust capture of irrigated-filter collection systems for continuous miners.
Colinet JF; McClelland JJ; Erhard LA; Jankowski RA
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9313, 1990 Jan; :1-14
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-micrometer size fractions were analyzed for quartz content, and these data were used to calculate quartz dust collection efficiency. The results of the 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.
Dust control; Air pollution control equipment; Filters; Mine ventilation; Test facilities; Experimental data; Mining equipment; Quartz; Particles; Mining engineering
IH; Report of Investigations
NTIS Accession No.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9313
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division