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Formation of airborne -respirable dust at belt conveyor transfer points.

Authors
Cheng-L
Source
Am Ind Hyg Assoc J 1973 Dec; 34(12):540-546
NIOSHTIC No.
00024095
Abstract
Laboratory study of the formation of airborne respirable dust by the dropping of broken bituminous coal from a belt conveyor reveals that about 10% of the respirable dust adhering to the broken coal becomes airborne owing to dislodgement upon impact. The specific formation of airborne dust is correlated empirically with the volume fraction of the falling coal, which is determined by the belt speed, the thickness of the coal layer on the belt surface, the material density, the bulk density, the angle of repose, the size of the broken coal, and the height of fall. Results are interpreted in terms of the shock dislodgement of dust particles adhering to the broken coal, and the dispersion of the dislodged particles by the surge of air from the space gaps in the impacting pieces.
Keywords
Aerosol-particles; Airborne-particles; Particulate-dust; Dust-particles; Coal-mining; Airborne-dusts; Dust-control; Coal-dust; Respiratory-system-disorders; Instrumentation; Working-environment; Material-handling-equipment; Mining-equipment
CODEN
AIHAAP
Publication Date
19731201
Document Type
Journal Article
Fiscal Year
1974
NTIS Accession No.
NTIS Price
Identifying No.
OP 58-74
Issue of Publication
12
ISSN
0002-8894
NIOSH Division
PRC
Source Name
American Industrial Hygiene Association Journal
State
PA
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