Dust Control Handbook for Industrial Minerals Mining and Processing

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REFERENCESASABE [2003]. Agricultural Cabs—Engineering Control of Environmental Air Quality, Part 1:Definitions, Test Methods, and Safety Practices [Standard 5525–1.1]. St. Joseph, Michigan:American Society of Agricultural and Biological Engineers.CDC [2000]. Notice to readers: NIOSH Alert; silicosis screening in surface coal miners—Pennsylvania, 1996–1997. Cincinnati, OH: U.S. Department of Health and Human Services,Centers for Disease Control and Prevention, National Institute for Occupational Safety andHealth.MMWR Weekly 49(27):612–615.Cecala AB, Zimmer JA [2004a]. Clearing the air. Aggregates Manager J 9(4):12–14.Cecala AB, Zimmer JA [2004b]. Filtered recirculation—a critical component to maintainingacceptable air quality in enclosed cabs for surface mining equipment. Proceedings of 10thU.S./N.A. Mine Ventilation Symposium. Anchorage, Alaska. May 16–19, pp. 377–387.Cecala AB, Organiscak JA, Heitbrink WA [2001]. Dust underfoot—enclosed cab floor heaterscan significantly increase operator's respirable dust exposure. Rock Products 104(4):39–44.Cecala AB, Organiscak JA, Heitbrink WA, Zimmer JA, Fisher T, Gresh RE, Ashley JD II[2004]. Reducing enclosed cab drill operator's respirable dust exposure at surface coaloperations with a retrofitted filtration and pressurization system. SME Transactions 2003,Littleton, Colorado: Society for Mining, Metallurgy and Exploration, Inc, 314:31–36.Cecala AB, Organiscak JA, Zimmer JA, Heitbrink WA, Moyer ES, Schmitz M, Ahrenholtz E,Coppock CC, Andrews EH [2005]. Reducing enclosed cab drill operator's respirable dustexposure with effective filtration and pressurization techniques. J of Occ and Env Hyg 2:54–63.Cecala AB, Organiscak JA, Zimmer JA, Moredock D, Hillis M [2007]. Closing the door to dustwhen adding drill steels. Rock Products, October, pp. 29–32.Chekan GJ, Colinet JF [2003]. Retrofit options for better dust control—cab filtration,pressurization systems prove effective in reducing silica dust exposures in older trucks.Aggregates Manager, December, 8(9):9–12.Heitbrink WA, Thimons ED, Organiscak JA, Cecala AB, Schmitz M, Ahrenhottz E [2000].Static pressure requirements for ventilated enclosures. Proceedings of the Sixth InternationalSymposium on Ventilation for Contaminant Control, Helsinki, Finland, June 4–7.Logson R [1998/1999]. Controlling respirable dust in plant control rooms. Stone Review, TheBimonthly Publication of the National Stone Association. December 1998/January 1999,14(6):43–44.NIOSH [2001a]. Technology news 485: Improved cab air inlet location reduces dust levels andair filter loading rates. By Organiscak JA, Page SJ. Pittsburgh, PA: U.S. Department of Healthand Human Services, Centers for Disease Control and Prevention, National Institute forOccupational Safety and Health.Operator Booths, Control Rooms, and Enclosed Cabs 239
NIOSH [2001b]. Technology news 486: Floor heaters can increase operator's dust exposure inenclosed cabs. By Cecala AB, Organiscak JA. Pittsburgh, PA: U.S. Department of Health andHuman Services, Centers for Disease Control and Prevention, National Institute for OccupationalSafety and Health.NIOSH [2007]. Technology news 528: Recirculation filter is key to improving dust control inenclosed cabs. By Organiscak JA, Cecala AB. Pittsburgh, PA: U.S. Department of Health andHuman Services, Centers for Disease Control and Prevention, National Institute for OccupationalSafety and Health, DHHS (NIOSH) Publication No. 2008–100.NIOSH [2008a]. Technology news 533: Minimizing respirable dust exposure in enclosed cabsby maintaining cab integrity. By Cecala AB, Organiscak JA. Pittsburgh, PA: U.S. Department ofHealth and Human Services, Centers for Disease Control and Prevention, National Institute forOccupational Safety and Health, DHHS (NIOSH) Publication No. 2008–147.NIOSH [2008b]. Key design factors of enclosed cab dust filtration systems. By Organiscak JA,Cecala AB. U.S. Department of Health and Human Services, Centers for Disease Control andPrevention, National Institute for Occupational Safety and Health: NIOSH Report ofInvestigations 9677.Organiscak JA, Cecala AB [2008]. Laboratory investigation of enclosed cab filtration systemperformance factors. Min Eng 60(12):74–80.Organiscak JA, Cecala AB, Thimons ED, Heitbrink WA, Schmitz M, Ahrenholtz E [2004].NIOSH/Industry collaborative efforts show improved mining equipment cab dust protection.SME Transactions 2003 Littleton, Colorado: Society for Mining, Metallurgy and Exploration,Inc., 314:145–152.240 Operator Booths, Control Rooms, and Enclosed Cabs
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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
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The shape of particles affects how
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EXHAUST SYSTEMS DESIGNAll exhaust s
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stripping, which allows workers to
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When using the air quantities in Ta
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X = distance in feet from the face
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Checklist for Hood EffectivenessThe
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A major disadvantage of the high-ve
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A common misconception when designi
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Avoiding Mitered Elbows Greater Tha
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Figure 1.13. Depiction of the horiz
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Figure 1.14. Typical design of grav
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Baghouse CollectorsBaghouse dust co
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Table 1.2. Emission factors for cru
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Figure 1.17. Typical design of a me
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Reverse Jet (Pulse Jet) CollectorsR
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Figure 1.20. Cartridge collector wi
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Wet scrubbers are particularly adva
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Electrostatic precipitators normall
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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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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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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
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Page 218 and 219: CHAPTER 7: BULK LOADINGDuring the b
Page 220 and 221: Figure 7.2. Loading spout discharge
Page 222 and 223: Cascading Loading SpoutFigure 7.5 i
Page 224 and 225: a seal at the entry and exit points
Page 226: REFERENCESBiere G, Swinderman RT, M
Page 229 and 230: 200 Bulk LoadingDUST CONTROL HANDBO
Page 231 and 232: many years, as well as some new and
Page 233 and 234: Figure 8.2. Air spray manifold desi
Page 235 and 236: Figure 8.3. Test subject wearing po
Page 237 and 238: Spills of product material are a co
Page 239 and 240: epetitive dust leaks should not sim
Page 241 and 242: Effective Upward Airflow PatternThe
Page 243 and 244: Figure 8.8. Open-structure design c
Page 245 and 246: manually removing the bags and plac
Page 247 and 248: Figure 8.12. Increase in worker’s
Page 249 and 250: In other cases, an operation may wa
Page 251 and 252: Cecala AB, O'Brien AD, Pollock DE,
Page 253 and 254: 224 Controls for Secondary SourcesD
Page 255 and 256: where C o = outside respirable dust
Page 257 and 258: minimal improvement in the cab's ai
Page 259 and 260: RECOMMENDATIONS FOR FILTRATION/PRES
Page 261 and 262: Effective FiltrationFigure 9.4. Res
Page 263 and 264: average decay times were between 16
Page 265 and 266: Figure 9.6. Filtration unit showing
Page 267: This table highlights a number of c
Page 271 and 272: DUST CONTROL HANDBOOK FOR INDUSTRIA
Page 273 and 274: upon the wind velocity (or disturba
Page 275 and 276: Maximum size is the largest particl
Page 277 and 278: Figure 10.4. Use of end-dumping wit
Page 279 and 280: conditions. Performance of each of
Page 281 and 282: A water truck, used to apply water
Page 283 and 284: Surfactants work by reducing the su
Page 285 and 286: which differed for the various site
Page 287 and 288: Figure 10.9. Self-tarping dump truc
Page 289 and 290: percent [Fryrear and Skidmore 1985]
Page 291 and 292: Figure 10.12. The armoring process
Page 293 and 294: A current method of stockpile forma
Page 295 and 296: Figure 10.15. Demonstration of how
Page 297 and 298: Chekan GJ, Cecala AB, Colinet JF [2
Page 299 and 300: Midwest Research Institute [1981].
Page 302 and 303: DUST CONTROL HANDBOOK FOR INDUSTRIA
Page 304 and 305: 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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