Dryers for granules - Import export

The granulation dryer is designed for continuous operation. A unique property of this dryer is its combination of convection and contact drying. Adaptation of the retention time to the specific process ensures that products are dried at low temperatures. At the same time, excellent granulation of the final product can be achieved. This intense mixing effect separates the particles in the fluid bed, thereby creating a large product surface and preventing the generation of temperature and moisture gradients in the product bed. This leads to a significant increase in the heat exchange via the heated drum walls. The product behaviour during drying is affected by the mixing tool geometry and choppers can be activated as an option; these can be used to control the average product retention time and the retention time distribution. It is therefore possible to achieve a defined grain size distribution during granulation processes

Lödige has years of expertise in continuous granulation. Nowadays, continuous ringlayer mixers are established systems for continuous granulation in many industries. However, until now the Lödige product range was missing a suitable dryer. The continuous fluid bed dryer closes this gap. Together with the ringlayer mixer CoriMix® and the customer-specific dosing system, this dryer provides a complete continuous granulation line: GRANUCON®. Dryer operation is based on the fluid bed process. A general disadvantage of continuous fluid beds is the wide retention time distribution within the machine. Lödige’s developers have looked into this problem and have found a solution: integrating a screw in the fluid bed dryer. This has a limiting effect on the retention time distribution. — Exchangeable floor — Quick screw removal — Integrated WIP cleaning — Individual purging of filter elements