Cylindrical Dryer

Overview

The ROSS Cylindrical Blender/Dryer combines precise heating with thorough blending under vacuum and is equipped with a baffled jacket surrounding the entire cylinder and end plates to enable rapid heat transfer. It consists of a cylindrical horizontal trough and a specially fabricated ribbon or paddle agitator and can be designed for high temperature requirements up to around 750 F. Wetted parts are fabricated from thick, high quality stainless steel, and sizes range from ½ to 515 cubic feet capacity; the gearbox and all bearings are located outside of the drying chamber and are not subjected to the same temperature as the materials being processed. Machines are engineered via Finite Element Analysis (FEA) to very accurate tolerances to accommodate shaft expansion during processing at high temperatures, and the combination of deep vacuum, heating through the fully jacketed vessel and constant agitation achieves significantly shorter drying times compared to heating alone. Special materials of construction including Hastelloy C-276, abrasive-resistant carbon steel and other alloys are available, and optional features include heavier duty, higher horsepower drive options, high-temperature mechanical seals, foam glass insulation, temperature sensors, air flow meters, vacuum pumps, dust filters, heat exchangers, high-performance valves, CIP spray nozzles, load cell systems and other accessories. The Cylindrical Blender/Dryer is used to remove moisture or solvent from pharmaceutical granulations, chemical powders, plastics, ceramics, metals and other products. It is designed to accommodate a wide range of feed forms, from free-flowing powders and pellets to wet granules and paste-like materials. The configuration addresses products that tend to persistently hang up on a conventional U-shaped trough, and the combination of deep vacuum, heating and constant agitation promotes uniform temperature and significantly shorter drying times compared to heating alone.