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A mining research contract report
FEBRUARY 1987
  

DUST CONTROL HANDBOOK FOR MINERALS PROCESSING

Contract No. J0235005

Martin Marietta Corporation
Martin Marietta Laboratories
1450 South Rolling Road
Baltimore, MD 21227-3898


Bureau of Mines logo
Bureau of Mines
U.S. Department of the Interior


FOREWORD

This report was prepared by Martin Marietta Laboratories, Baltimore, Maryland, and Marcom Associates, Inc., Annandale, Virginia, under USBM Contract Number J0235005. It was administered under the technical direction of the U.S. Bureau of Mines, Pittsburgh Research Center, with Vinit Mody acting as Technical Project Officer. Jon Volkwein was the contract administrator for the Bureau of Mines. This report is a summary of the work recently completed as a part of this contract during the period September 1983 to September 1985. This report was submitted by the authors in February 1987.

Mr. Vinit Mody, program manager and principal author, was assisted by co-author Mr. Rajendra Jakhete. Ms Angela Mulloy of Marcom Associates, Inc., directed the technical editing and preparation.

This handbook is intended only as a guide. Dust controls for individual sites must be designed, implemented, and operated according to applicable federal, state, and local regulations and specific site conditions. Martin Marietta Corporation assumes no responsibility for the accuracy, adequacy, or completeness of the concepts, methodologies, or protocols described in this handbook.


CONTENTS

Chapter 1: Dust and Its Control
What Is Dust?
How is Dust Generated?
Types of Dust
Why is Dust Control Necessary?
Health Hazard Factors
How is Dust Controlled?
Chapter 2: Preventing Dust Formation
Introduction
Belt Conveyors
Transfer Chutes
Enclosures
Crushers
Screens
Storage Bins and Hoppers
Bucket Elevators
Feeders
Screw Conveyors
Pneumatic Conveyors
Grinding Mills
Dryers
Stockpiles
Haul Roads
Truck and Railroad Car Dumping
Powder Handling and Packing
Chapter 3: Dust Control Systems
Why Dust Control?
Types of Dust Control Systems
Selection of a Dust Control System
Dust Collection System
Wet Dust Suppression System
Airborne Dust Capture Systems
Design of a Water-Spray System
Chapter 4: Collecting and Disposing of Dust
What Is a Dust Collector?
Necessity for Dust Collectors
Types of Dust Collectors
Types of Inertial Separators
Fabric Collectors
Wet Scrubbers
Electrostatic Precipitators
Unit Collectors
Selecting a Dust Collector
Fan and Motor
Disposal of Collected Dust
Chapter 5: Specific Illustrations

Chapter 6: Estimating Costs of Dust Control Systems
Necessity for Cost Estimates
Cost Estimating Procedures
Cost Components
Cost Justification
Chapter 7: Controlling Surrounding Dust Sources
Introduction
Contributing Sources/Factors
Administrative Measures
Preventative Maintenance Program
Proper Operating Procedures
Managerial Measures
Outside Dust Source Control
Recirculation of Uncontrolled Emissions
Chapter 8: Sampling Dust in the Work Environment
Personal Dust Sampling
ABC's of Personal Dust Sampling
Personal Dust Sampling Equipment
Sampling Procedure
Errors in Respirable Dust Sampling
Chapter 9: Testing Dust Control Systems
Reason for Testing
Dust Collection System Testing
Wet Dust Suppression
Evaluating Dust Control Systems
Bibliography


Unclassified
SECURITY CLASSIFICATION OF THIS REPORT (When Date Entered)

REPORT DOCUMENT PAGE READ INSTRUCTIONS BEFORE COMPLETING FORM
1 REPORT NUMBER 2 GOVT ACCESSION NO. 3 RECIPIENT'S CATALOG NUMBER
4 TITLE (and Subtitle)
   DUST CONTROL HANDBOOK FOR MINERAL PROCESSING		 5 TYPE OF REPORT & MATERIAL COVERED
    FINAL REPORT
28 Sept 1983 thru 20 Feb 1987
6 PERFORMING ORG. REPORT #
7 AUTHOR(s)

   Vinit Mody, Raj Jakhete
  		 8 CONTRACT OR GRANT NUMBER

         J0235005
9 PERFORMING ORGANIZATION NAME AND ADDRESS
   Martin Marietta Laboratories
   1450 S. Rolling Road
   Baltimore, MD 21227		 10 PROGRAM ELEMENT , PROJECT, TASK AREA AND WORK UNIT NUMBERS
11 CONTROLLING OFFICE NAME AND ADDRESS
    U.S. Bureau of Mines
    Contract Section A, Bldg. 20, Denver Federal Ctr.
    Denver, CO 80225		 12 REPORT DATE
       20 Feb 1987
13 NUMBER OF PAGES
        220
14  MONITORING AGENCY NAME AND ADDRESS (If different from  
     controlling office)
     U.S. Bureau of Mines
    Pittsburgh Research Center, PO Box 18070
    Pittsburgh, PA 15236    Attn:  J.C. Volkwein 		 15 SECURITY CLASS. (of this report)
        unclassified
15a DECLASSIFICATION DOWNGRADING SCHEDULE
16 DISTRIBUTION STATEMENT (of this region)

              Unlimited - Approved for Public Release

17 DISTRIBUTION STATEMENT (of the abstract entered in block 20, if different from report)

18 SUPPLEMENTARY NOTES

19 KEYWORDS
     Mineral Processing Dust Control, Dust Control Systems, Mining, Mineral Processing
    Testing Dust Control Systems, Sampling Dust in Mines, Personal Dust Protection

20 ABSTRACT
This handbook consolidates information developed by industry and government laboratories on dust control engineering techniques for metal and nonmetal mineral processing. The concepts of dust, its prevention, formation and control are examined, including wet and dry control systems, personal protection, and testing methods. Costing methodologies are also examined. Prospective users of this handbook include maintenance foremen, plant engineers, mill supervisors, and safety directors or similar position. The information is described and illustrated in a manner to assist one skilled in mineral processing but not necessarily skilled in dust control, to have enough information to implement a dust control technique without need to refer to other sources.

DD FORM 1 JAN 73 1473    EDITION OF 1 NOV 65 IS OBSOLETE