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Suppression of longwall respirable dust using conventional water sprays inoculated with surfactants and polymers.

Authors
Kilau-HW; Lantto-OL; Olson-KS; Myren-TA; Voltz-JI
Source
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9591, 1996 Jan; :1-60
Link
NIOSHTIC No.
20039377
Abstract
The U.S. Bureau of Mines is evaluating water spray additives for the purpose of improving respirable dust control during coal mining operations with particular emphasis on the longwall shearer. Recent field tests of combined surfactant-polymer reagents at two production longwall operations have shown favorable respirable dust reductions compared with water sprays containing no additive. Gravimetric dust samples obtained downwind of the shearer while following or preceding the machine showed corrected dust reductions in the range of about 40 - 60 percent for some of the reagent formulations as compared to water alone. Experimental evidence indicates that dust captured by reagent-treated sprays at the shearer can be re-emitted in the headgate area if stageloader-crusher sprays and other dust controls are inadequate.
Keywords
Coal-dust; Coal-mines; Dust-control; Longwall-mining; Mining-equipment; Occupational-safety-and-health; Performance-evaluation; Polymers; Respiration; Sampling; Shearer-loaders; Spraying; Surfactants; Wetting-agents; Respiratory-irritants; Respiratory-protection; Dust-collectors; Dust-exposure; Dust-inhalation; Dust-measurement; Particulate-dust; Pulmonary-system; Lung-irritants
Publication Date
19960101
Document Type
Report of Investigations
Fiscal Year
1996
NTIS Accession No.
PB96-137328
NTIS Price
A04
Identifying No.
RI-9591
NIOSH Division
TCRC
Source Name
Minneapolis, MN: U.S. Department of the Interior, Bureau of Mines, RI 9591
State
MN
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