Issue link: https://www.e-digitaleditions.com/i/1355344
2 / April 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. April 2021 | Volume 35 Number 4 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 15 Markets update 19 Special section: Bin dischargers 33 Calendar 37 Continuing education 39 Supplier notes 41 People news 41 Product news C3 Classified advertising C3 Advertiser index DEPARTMENTS INDUSTRY PERSPECTIVE 7 Growth and resiliency Richard J. Farnish DRYING 20 Comparing horizontal and vertical dryers in dynamic drying Jan Wankerl 25 Focus products 56 Suppliers' tips Suppliers discuss ways to reduce energy costs during the drying process. GENERAL FEATURES 16 Mixing Mechanics: The importance of scale of scrutiny James L. Davis 28 Engineering solution: Making bulk bag unloading systems portable 30 Benefits of tubular cable conveyors over air-powered conveyors for fragile food materials Karl Seidel 42 Mini case histories On the cover: Bulk material heat exchanger is a new equipment design developed by the supplier's research and development department. Heat exchanger is shown as a glass-front, 10-foot-tall test unit in the supplier's test lab. Heat exchanger allows material to flow between vertical plates filled with a thermal liquid to indirectly dry, heat, or cool the material being processed. Heat ex- changer is suitable for bulk material processing that requires low emissions, enclosed and contamination-free processing, and deg- radation-free handling. Courtesy of Carrier Vibrating Equipment, Louisville, KY, 502-969-3171 (www.carriervibrating.com). 20 28 30