Mechanical Conveyors: Selection and Operation

This book is a comprehensive, practical guide and reference to today's mechanical conveyor systems. It covers all types of mechanical conveyors, providing in-depth information on their design, function and applications. More than 180 photographs and schematics illustrate details of design and system layout. An introductory chapter provides an understanding of the characteristics of various types of bulk solids, including their conveyability and the types of conveying systems most effective for each. Following chapters examine each of five major categories of conveying systems, with practical details on their design, operation and applications. The final chapter presents basic information on motors and drives for conveying systems, as well as related equipment such as speed reduction systems and conveyor brakes. The emphasis throughout the text is on practical engineering and operating information, with a minimum of theory. The presentation is systematic and organized for easy reference. A very detailed index enables the quick location of needed information. This guide and reference will be useful to all engineers and other personnel involved in the continuous movement of bulk solids. It serves as both a basic introduction and a desk-top reference. The Authors Dr. Fayed is a Professor and Director of the Powder Science & Technology Group at Ryerson Polytechnic University in Toronto. He is also a licensed Consulting Engineer, a Fellow of the American Institute of Chemical Engineers and the Canadian Society of Chemical Engineering. Previously he held positions in process design and development with ICI, Davy McKee, M. W. Kellogg, and Peabody. He has lectured at numerous seminars and workshops at meetings of the American Institute of Chemical Engineers, and other organizations. He has published many papers on particulate technology and is the co-editor of Powder Science & Technology Handbook. Thomas Skocir in an engineer presently with ECO-TEC, an environmental engineering company in Toronto.

Table of Contents:
1. Introduction General Comments o Conveying and Material Handling o The Material Handling Problem o Equipment Specifications o Standardizing Sources of Additional Information 2. Material Characterization and Analysis General Comments o Representative Sampling o Sample Analysis o Physical Properties and Tests o Qualitative Properties o Material Classification o Coding 3. Belt Conveyors Introduction o Layout o Basic Configuration o Important Material Characteristics o Material Properties o Affecting Conveyability o Components of a Standard Belt Conveyor o Design Belt o Training Belt Feeders o Belt Scales oSpecialty Systems 4. Screw Conveyors and Feeders Introduction o Basic Configuration o Material Classifications o Material Properties Affecting o Conveyability Components of a Screw Conveyor o Hardfacing and Wear Resistance o Conveyor Design Inclined o Conveying Feeders o Flexible Screw Conveyors Screw o Unloaders and Loaders 5. Vibratory Conveyors Introduction o Basic Configuration o Vibratory Feeders versus Conveyors o Material Processing o Material Properties Affecting Conveyability o Components of a Vibratory Conveyor o Modes of Operation o Capacity Spiral Elevators o Reciprocating Slat Conveyors 6. Chain-Type Conveyors Introduction o Basic Configuration o Material Properties Affecting Conveyability o Components of a Chain Conveyor o Conveyor Design o Apron Conveyors oDrag Conveyors oPlain Chain Conveyors o Scraper and Flight Conveyors o En-Masse Conveyors o Tubular Drag Conveyor o Aero-Mechanical Conveyors o Serpentix 7. Bucket Elevators and Bucket Carriers Introduction o Basic Configuration o Material Properties Affecting Conveyability o Types of Bucket Elevatorso Components of a Bucket Elevator o Design o Conveying High-Temperature Materials o Bucket Carriers 8. Motors and Drives Introduction o Motors Speed o Reduction o Adjustable Speed Drives o Soft Starting Flexible Couplings and Shaft Alignment Appendices Units and Conversions o Organizations and Periodicals o Motor Terminology and Definitions o Material Characteristics Index Data Tables More than 50 tables provides a wealth of useful reference data on mechanical conveyors and conveyable materials. Here is a small sampling of table captions: Flowability of Solids CEMA Material Classification Code Chart Conveyor Belt Grades and Services Recommended Maximum Belt Speed Screw Conveyor Sizes and Capacities Torsional Ratings and Groupings of Components Conveying Speeds and Bed Depths of Some Common Materials Characteristics of Various Chain-Type Conveyors Comparison of Solid-State Electrical Adjustable Speed Drives Material Characteristics and Design Factors (series of tables) Illustrations More than 180 photographs, diagrams and other schematics illustrate different types of mechanical conveyors, their design and function, and component parts. Here is a small sampling of these illustrations: Mechanical splices (for belts) Various drive arrangements for a belt conveyor Volumetric belt feeder and bin arrangement Typical screw conveyor setup Flared trough screw feeder with conveyor section Exploded view of a twin screw, volumetric feeder Typical vibratory conveyor arrangement Heavy-duty feeder with an electromagnetic drive Centrifugal discharge elevator and continuous discharge elevator Variable pitch sheave drives