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Mining Publication: Using Water Sprays to Improve Performance of a Flooded-Bed Dust Scrubber
Keywords: Scrubbers Water spraying Water sprays
Original creation date: July 2000
Authors: GV Goodman
Peer Reviewed Journal Article - July 2000
Download PDF Document (0.83 MB)
NIOSHTIC2 Number: 20022718
Appl Occup Env Hyg 2000 Jul 15(7):550-560
Supplemental water sprays were placed along the sides of a continuous mining machine to improve suppression and confinement of the dust cloud under the cutting boom to reduce downwind dust levels. Using a full-scale mock-up of a continuous mining machine, preliminary work showed that these side sprays improved suppression of the dust cloud and redistributed this cloud under the cutting head. This led to reductions in dust levels around the machine and in downwind airways for some positions of the mining machine. This testing also showed that side spray effectiveness was influenced by the distance from the fresh air ventilation device to the cutting surface, termed the ventilation setback distance. These sprays produced larger reductions in machine and return dust levels at smaller setback distances than a larger setback distances. These side sprays then were installed in similar locations on a mining machine at an underground coal mine operation to evaluate their effectiveness for improving suppression and capture of dust by the flooded-bed dust scrubber. Although sampling could not be conducted successfully in the return, sampling around the mining machine and at the machine operator showed that dust levels decreased with use of these sprays. Further analysis showed that these sprays were most effective at the smaller setback distances, a result confirmed by full-scale laboratory testing.
Image of publication Using Water Sprays to Improve Performance of a Flooded-Bed Dust ScrubberPeer Reviewed Journal Article - July 2000
Download PDF Document (0.83 MB)
NIOSHTIC2 Number: 20022718
Appl Occup Env Hyg 2000 Jul 15(7):550-560
See Also
Airborne Dust Capture and Induced Airflow of Various Spray Nozzle Designs
Continuous Miner Spray Considerations for Optimizing Scrubber Performance in Exhaust Ventilation Systems
Developing and Improving Respirable Dust Controls in Coal Mines
Development of a Lower-Pressure Water-Powered Spot Scrubber for Mining Applications
Effects of Water Sprays and Scrubber Exhaust on Face Methane Concentrations
Effects of Water Sprays Used With a Machine-Mounted Scrubber on Face Methane Concentrations
Empirical Engineering Models for Airborne Respirable Dust Capture from Water Sprays and Wet Scrubbers
Evaluation of the Wet Head Continuous Miner to Reduce Respirable Dust
NIOSH Hazard ID 1 - Exposure to Silica Dust on Continuous Mining Operations Using Flooded-Bed Scrubbers
Use of a Directional Spray System Design to Control Respirable Dust and Face Gas Concentrations Around a Continuous Mining Machine
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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