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Bag machine dust controls and bag sealing.

Authors
Muldoon-TL; Valentine-JW; Burnett-M
Source
NTIS: PB/86-153558; :1-74
Link
NIOSHTIC No.
10004964
Abstract
The bagging of dry pulverized products using fluidized air packers creates severe respirable dust problems in many surface mining operations. During bag filling, excess air and product blows by the bag valve-nozzle interface. After bag ejection, dust blows out of the bag valve. During bag conveying and handling, dust is released from the bag valve and dirty bag surface. Overexposure of the bagging machine operator and bag handlers is common. This report describes the development and testing of a new dust control system for bagging machines. The system features a new bag clamp design to reduce product blowby during filling. A controlled vacuum system removes excess air from the bag before ejection, eliminating the problems after bag ejection and during conveying and handling. The system has shown significant reductions in dust exposure for both bag machine operators and bag handlers. These reductions are achieved with no significant effect on total mill productivity.
Publication Date
19850101
Document Type
CP; Final Contract Report
Fiscal Year
1985
NTIS Accession No.
PB86-153558
NTIS Price
A05
Identifying No.
OFR 8-86
NIOSH Division
PRC
Source Name
NTIS: PB/86-153558
State
PA
Performing Organization
Foster-Miller, Inc.
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