Dust Control Handbook for Industrial Minerals Mining and Processing

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ACRONYMS AND ABBREVIATIONSUSED IN THIS HANDBOOKAASHTOACGIHAEKAIRRSASHRAEASTMB&BCDBHPCBRCEMACFRDSHEPAESPFIBCFKHEPAHVACLEVMERVMLVMSDMSDSMSHANIOSHNISANKOASISOSHAPFPMPSEPTFESOPSPTPTSPTWAUSBMVPAmerican Association of State Highway and Transportation OfficialsAmerican Conference of Governmental Industrial Hygienistsairflow extensible Kraftair ring sealAmerican Society of Heating, Refrigerating and Air-Conditioning EngineersAmerican Society for Testing and Materialsbag and belt cleaning devicebrake horsepowerCalifornia Bearing RatioConveyor Equipment Manufacturers AssociationCode of Federal RegulationsDust Suppression HopperEnvironmental Protection Agencyelectrostatic precipitatorFlexible Intermediate Bulk Containerflat Krafthigh-efficiency particulate airheating, ventilation, and air-conditioninglocal exhaust ventilationminimum efficiency reporting valuemodified low-velocitymusculoskeletal disorderMaterial Safety Data SheetMine Safety and Health AdministrationNational Institute for Occupational Safety and HealthNational Industrial Sand Associationnatural Kraftoverhead air supply island systemOccupational Safety and Health Administrationprotection factorparticulate matterparticle size efficiencypolytetrafluoroethylenestandard operating procedurestatic pressuretotal pressuretotal suspended particulatestime-weighted averageUnited States Bureau of Minesvelocity pressurexxiii
UNIT OF MEASURE ABBREVIATIONSUSED IN THIS HANDBOOKacphcfmcfm/ft2cfm/ftfpmft2ftft/min2gal/ydgpmgr/cfgr/dscf3kg/mlblbs/hourlbs/min3μg/mμm3mg/mmmNPTpHpsipsigRPMscfmTPHwgair changes per hourcubic feet per minutecubic feet per minute per feetcubic feet per minute per feet squaredfeet per minutefeetfeet squaredfeet per minutegallons per square yardgallons per minutegrains per cubic footgrains per dry standard cubic footkilograms per cubic meterpoundspounds per hourpounds per minutemicrograms per cubic metermicrometersmilligrams per cubic metermillimetersnational pipe taperpotential of hydrogenpounds per square inchpound-force per square inch gaugerevolutions per minutestandard cubic feet per minutetons per hourwater gaugexxiv
Page 2 and 3: Report of Investigations 9689Dust C
Page 4: FUNDAMENTALS OF DUSTCOLLECTION SYST
Page 7 and 8: Minimizing Field Fits and Welds ...
Page 9 and 10: Recommendations for Proper Wet Dril
Page 11 and 12: CONTROL TECHNOLOGIES FOR FILLING 50
Page 13 and 14: Effective Filtration ..............
Page 15 and 16: ILLUSTRATIONSFigure 1.1. Relationsh
Page 17 and 18: Figure 3.2. The air and water flow
Page 22: Figure 9.5. Problem created by heat
Page 28: Robert J. Franta, Quotation Enginee
Page 32 and 33: silica. Quartz is the most common s
Page 34 and 35: DUST CONTROL HANDBOOK FOR INDUSTRIA
Page 36 and 37: 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
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times. When considering the depth o
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Figure 1.25. Demonstration of how a
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Figure 1.26. A typical fan performa
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Fan TypesThere are two basic types
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Figure 1.30. Typical centrifugal fa
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Figure 1.32. Typical roof ventilato
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DUST CONTROL HANDBOOK FOR INDUSTRIA
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The vast majority of dust particles
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Table 2.1. Particle/droplet size in
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Air Atomizing NozzlesAir atomizing
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Hydraulic Flat Fan NozzlesFigure 2.
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for dust knockdown or suppression,
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Nozzle MaintenanceFigure 2.14. Typi
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Accidental DamageInadvertent harm t
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NDT Educational Resource Center, Io
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78 Wet Spray SystemsDUST CONTROL HA
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contains a piston which delivers ha
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produce an increase in the penetrat
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Dry DrillingDry drilling is accompl
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Circular ShroudIn contrast to the u
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The collector airflow has a more su
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Air-Blocking ShelfThe air-blocking
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dust emissions from mast lowering,
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This simple procedure of creating a
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Figure 3.15. Air ring seal used to
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Figure 3.17. Illustrations showing
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unsubstantiated due to the inconsis
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safety considerations may preclude
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Figure 3.22. A filtration unit, loc
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Miller S, Emerick JC, Vogely WA [19
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USBM [1995]. The reduction of airbo
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110 Drilling and BlastingDUST CONTR
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Wet Control MethodsPREVENTION AND S
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Figure 4.2. Examples of compressive
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Figure 4.5. Illustration of a dry (
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Figure 4.6. Illustration of a dry (
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Wet dust control methods for crushi
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Work Practices to Minimize Dust Exp
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Some specialty grinding operations
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should be frequently inspected for
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Open screen decks slowly to allow i
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CHAPTER 5: CONVEYING AND TRANSPORTT
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Figure 5.3. Basic depiction of mate
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that the material falls before land
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Figure 5.10. Skirtboard used within
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CarrybackMaterial that sticks or cl
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CONVEYOR DESIGN AND MAINTENANCE ISS
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Figure 5.15. Conveyor transfer encl
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High-volume, high-pressure sprays s
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Figure 5.19. Depiction of a bucket
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Figure 5.21. Depiction of two types
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Figure 5.25. Venturi eductor utiliz
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Page 186 and 187:
CHAPTER 6: BAGGINGThis chapter disc
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caused during manufacturing, includ
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Overall PerforationsThe use of over
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Figure 6.5. Open-top bag being load
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Bagging operators should be aware t
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Figure 6.8. Exhaust hood to capture
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In the original design, a single no
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The OASIS is a relatively simple de
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Figure 6.13. Bag storage shelves sh
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Figure 6.14. Bag and belt cleaner d
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other industrial application using
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The robotic arm automatic palletize
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For many years, this plastic wrappi
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warehouse location until a later ti
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used successfully to perform this c
Page 216 and 217:
Page 218 and 219:
CHAPTER 7: BULK LOADINGDuring the b
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Figure 7.2. Loading spout discharge
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Cascading Loading SpoutFigure 7.5 i
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a seal at the entry and exit points
Page 226:
REFERENCESBiere G, Swinderman RT, M
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200 Bulk LoadingDUST CONTROL HANDBO
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many years, as well as some new and
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Figure 8.2. Air spray manifold desi
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Figure 8.3. Test subject wearing po
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Spills of product material are a co
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epetitive dust leaks should not sim
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Effective Upward Airflow PatternThe
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Figure 8.8. Open-structure design c
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manually removing the bags and plac
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Figure 8.12. Increase in worker’s
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In other cases, an operation may wa
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Cecala AB, O'Brien AD, Pollock DE,
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224 Controls for Secondary SourcesD
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where C o = outside respirable dust
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minimal improvement in the cab's ai
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RECOMMENDATIONS FOR FILTRATION/PRES
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Effective FiltrationFigure 9.4. Res
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average decay times were between 16
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Figure 9.6. Filtration unit showing
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This table highlights a number of c
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NIOSH [2001b]. Technology news 486:
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upon the wind velocity (or disturba
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Maximum size is the largest particl
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Figure 10.4. Use of end-dumping wit
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conditions. Performance of each of
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A water truck, used to apply water
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Surfactants work by reducing the su
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which differed for the various site
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Figure 10.9. Self-tarping dump truc
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percent [Fryrear and Skidmore 1985]
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Figure 10.12. The armoring process
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A current method of stockpile forma
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Figure 10.15. Demonstration of how
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Chekan GJ, Cecala AB, Colinet JF [2
Page 299 and 300:
Midwest Research Institute [1981].
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GLOSSARYAbrader. An implement used
Page 306 and 307:
Carryback. Material that sticks or
Page 308 and 309:
End-dumping. A process of spreading
Page 310 and 311:
Open structure building design. A p
Page 312 and 313:
Table bushing. A bushing used to se
Page 314:
Delivering on the Nation’s promis
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