We are pleased to announce the successful completion of the development of the Freeze Granulator CS220, the latest generation of the world’s first mass-production freeze granulator capable of continuous production. CS220 is also the world’s first freeze granulator to employ a scalable closed-cycle system, the result of our ongoing R&D efforts.

Freeze granulation is a process in which a liquid material is atomized into a low-temperature environment and rapidly gets frozen. The moisture contained in the frozen granules is then removed through a freeze-drying process by sublimation, resulting in the production of dry powder products. Granules produced through freeze granulation are spherical in shape, have excellent flowability, and keep low density while maintaining a high degree of homogeneity.

Freeze Granulator CS220 utilizes the “liquid nitrogen-free” dry cooling system powered by our original high-efficiency cooling unit. Because liquid nitrogen is not required, operating costs can be significantly reduced. Fine droplets generated through atomization come into contact with a continuously supplied low-temperature airflow within the freeze granulation process and are frozen in the airflow. The frozen particles are collected either at the bottom of the freezing chamber or by a cyclone. By increasing the size of the collection container, large volumes of frozen particles can be produced in a single operation. The collected frozen particles are subsequently freeze-dried using the RHEOFREED® Freeze Dryer. By connecting multiple freeze dryers to CS220 and automatically switching connections, it is possible to process as semi-continuous production.

Product Overview
Product Name: Freeze Granulator CS220
Scheduled Launch Date: June 1, 2023

Contact
Powder Technical Center
T +81-44-328-7665