Issue link: https://www.e-digitaleditions.com/i/1388570
2 / July 2021 powderbulk.com Powder and Bulk Engineering (ISSN 0897-6627) is published monthly, twelve times per year by CSC Publishing Inc., 1155 Northland Drive, St. Paul, MN 55120. Periodicals postage paid at St. Paul, MN and additional mailing office. POSTMASTER: Send address changes to Powder and Bulk Engineering, 1155 Northland Drive, St. Paul, MN 55120. July 2021 | Volume 35 Number 7 www.powderbulk.com T H E AU T H O R I T Y S I N C E 1 9 8 7 8 Industry news 14 Markets update 29 Special section: Filter media 36 Special section: Vacuum cleaning equipment 46 Calendar 48 Continuing education 51 What's new 52 Supplier notes 53 People news 53 Product news C3 Classified advertising C3 Advertiser index DEPARTMENTS EDITOR'S NOTE 6 Letter from the editor Nate Todd INDUSTRY PERSPECTIVE 7 Leaving no stone unturned in basic engineering Colin Barbeau MECHANICAL CONVEYING 20 Focus products 31 Biomass revolution — Can you handle it? Joel E. Dulin 56 Suppliers' tips Suppliers discuss the most efficient mechanical conveying method for cohesive material GENERAL FEATURES 16 Pneumatic points to ponder: Pneumatic conveying line stepping Jack D. Hilbert 24 Compressed air — Part III: Implementing and sustaining a postaudit plan Paul Edwards and Mauricio Uribe 38 How to work with equipment vendors — Part II Todd Smith 42 Nanotechnology 44 Show preview: International Powder & Bulk Solids Conference & Exhibition 45 Show preview: Pack Expo Las Vegas 55 Mini case history 31 24 On the cover: Model 4300 tubular cable and disc drag conveyor elevates breakfast cereal in the supplier's showroom. Conveyor's enclosed tubes exclude contaminants while the discs' gentle movement protects the integrity of fragile products, including crackers, popcorn, cookies, and potato chips. Conveyor's sanitiz- ing options include wet or dry cleaning. Conveyor can be custom- ized in 3D layouts and with different tube diameters to achieve conveying capacities of up to 2,000 ft 3 /h. Courtesy of Cablevey Conveyors, Oskaloosa, IA, 800-247-3344 (www.cablevey.com).