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Report of Investigations 9689Dust C
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FUNDAMENTALS OF DUSTCOLLECTION SYST
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Minimizing Field Fits and Welds ...
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Recommendations for Proper Wet Dril
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CONTROL TECHNOLOGIES FOR FILLING 50
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Effective Filtration ..............
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ILLUSTRATIONSFigure 1.1. Relationsh
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Figure 3.2. The air and water flow
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Figure 9.5. Problem created by heat
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UNIT OF MEASURE ABBREVIATIONSUSED I
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Robert J. Franta, Quotation Enginee
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silica. Quartz is the most common s
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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CHAPTER 1: FUNDAMENTALS OFDUST COLL
- Page 38 and 39: The shape of particles affects how
- Page 40 and 41: EXHAUST SYSTEMS DESIGNAll exhaust s
- Page 42 and 43: stripping, which allows workers to
- Page 44 and 45: When using the air quantities in Ta
- Page 46 and 47: X = distance in feet from the face
- Page 48 and 49: Checklist for Hood EffectivenessThe
- Page 50 and 51: A major disadvantage of the high-ve
- Page 52 and 53: A common misconception when designi
- Page 54 and 55: Avoiding Mitered Elbows Greater Tha
- Page 56 and 57: Figure 1.13. Depiction of the horiz
- Page 58 and 59: Figure 1.14. Typical design of grav
- Page 60 and 61: Baghouse CollectorsBaghouse dust co
- Page 62 and 63: Table 1.2. Emission factors for cru
- Page 64 and 65: Figure 1.17. Typical design of a me
- Page 66 and 67: Reverse Jet (Pulse Jet) CollectorsR
- Page 68 and 69: Figure 1.20. Cartridge collector wi
- Page 70 and 71: Wet scrubbers are particularly adva
- Page 72 and 73: Electrostatic precipitators normall
- Page 74 and 75: may be related to specific applicat
- Page 76 and 77: times. When considering the depth o
- Page 78 and 79: Figure 1.25. Demonstration of how a
- Page 80 and 81: Figure 1.26. A typical fan performa
- Page 82 and 83: Fan TypesThere are two basic types
- Page 84 and 85: Figure 1.30. Typical centrifugal fa
- Page 86 and 87: Figure 1.32. Typical roof ventilato
- Page 90 and 91: CHAPTER 2: WET SPRAY SYSTEMSProbabl
- Page 92 and 93: Controlling Droplet SizeWhen using
- Page 94 and 95: Figure 2.3. Contact angle resulting
- Page 96 and 97: Hydraulically atomizing nozzles for
- Page 98 and 99: Figure 2.10 illustrates a typical d
- Page 100 and 101: filtering system to eliminate the p
- Page 102 and 103: Figure 2.16. Nozzle corrosion—new
- Page 104 and 105: Performance Testing of EquipmentDue
- Page 106 and 107: DUST CONTROL HANDBOOK FOR INDUSTRIA
- Page 108 and 109: CHAPTER 3: DRILLING AND BLASTINGThe
- Page 110 and 111: that dust control efficiencies grea
- Page 112 and 113: Water Separator SubWater separation
- Page 114 and 115: The integrity of the drill deck shr
- Page 116 and 117: Bailing airflow (Q B ) can be obtai
- Page 118 and 119: ecome smaller as Q C /Q B increases
- Page 120 and 121: pictured) was added to the door fla
- Page 122 and 123: overlap to eliminate any gaps that
- Page 124 and 125: Drill Stem/Deck LeakageDrill cuttin
- Page 126 and 127: These drills may also contain a wat
- Page 128 and 129: Wet drilling has been found to be t
- Page 130 and 131: e a significant factor when optimiz
- Page 132 and 133: Figure 3.21. A fogger spray used to
- Page 134 and 135: Ventilation System DispersalThe mos
- Page 136 and 137: USBM [1938a]. Effect of angle of dr
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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CHAPTER 4: CRUSHING, MILLING, AND S
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the degree of enclosure of the cont
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Figure 4.4 illustrates a wet dust c
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Enclosure exhaust air volume (Q E )
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Figure 4.8. Illustration of a dry (
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Figure 4.11. Illustration of a wet
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Figure 4.12. Cut-away illustration
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Grinding circuits and buildings sho
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Figure 4.16. Illustration of a dry
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REFERENCESthACGIH [2010]. Industria
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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There are three primary root causes
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direction of the receiving conveyor
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Figure 5.8. Depiction of an impact
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operational conditions this could m
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at different locations in an effort
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DESIGN CONSIDERATIONS FOR TRANSFER
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Q dis = calculated displaced air, c
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Normally, screw conveyors are total
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Figure 5.20. Depiction of a typical
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The dismantling of these airlock de
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Goldbeck LJ, Marti AD [2010]. Dust
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156 Conveying and TransportDUST CON
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For valve-type bags, three major du
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normally required for most industri
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Because of the product and dust emi
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Figure 6.6. Extended polyethylene b
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disposed of in a safe manner. A new
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Figure 6.9. Exhaust hopper below ba
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The dual-nozzle bagging system can
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these operations, the dust concentr
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CONTROL TECHNOGIES FOR CONVEYING AN
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entire pallet loading cycle. The li
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loaded onto the previous layer. The
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Plastic Pallet WrapThe final consid
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If dust is still being liberated, a
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WORK PRACTICES TO MINIMIZE DUST EXP
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Godbey T [2005]. Recirculating your
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188 BaggingDUST CONTROL HANDBOOK FO
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encases the product transfer sectio
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Figure 7.4. Skirt (in yellow box) a
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DUST SUPPRESSION HOPPERAnother modi
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Operator Booths/Control RoomsOne of
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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CHAPTER 8: CONTROLS FOR SECONDARY S
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Clothes Cleaning BoothThe clothes c
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outside all mineral processing plan
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A second regulation is a general in
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type units. Some operations also co
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ventilation design [Cecala and Much
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CostsThe total structure ventilatio
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EXAMPLES OF SECONDARY DUST SOURCEST
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Figure 8.11. Worker closing bag val
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soiled with product, it is then tra
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Maximize the use of remote access f
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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CHAPTER 9: OPERATOR BOOTHS, CONTROL
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Obviously, the higher the value for
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In Figure 9.2, the parameter values
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Figure 9.3. Positive cab pressure n
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quantity from 50 to 70 cfm (Q I ) w
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Because of the significant increase
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to be pulled directly back into the
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REFERENCESASABE [2003]. Agricultura
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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CHAPTER 10: HAUL ROADS, STOCKPILES,
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oad maintenance, reduce equipment m
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with a smooth drum roller [National
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thickness of the subbase, wearing s
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suppressant is applied to the loose
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During a field study by the Nationa
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Petroleum EmulsionsPetroleum resins
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Other Dust Control MethodsSpeed Con
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performed. Short-term stockpiles co
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Figure 10.11. Example of tillage (f
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soil surface becomes compact and me
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Wind BarriersWind barriers for wind
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Figure 10.17. Layout demonstrating
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EPA [1998]. Section 13.2.2 Unpaved
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Watson JG, Rogers CF, Chow JC, DuBo
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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Air velocity. The speed of air trav
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Diffusion. The spread of dust parti
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Hydraulic hollow cone nozzles. In w
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Semi-autogenous. Size reduction of
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Wet drilling. In surface drilling,