TG 200 Fluid Bed Dryer

To grind moist or even wet sample materials is not possible without bothersome side effects, especially in jaw crushers, rotor or disc mills. Moist materials tend to block the ring and bottom sieves which can lead to a blockage of the machine.

As a consequence, material is lost and much time and effort has to be spent on cleaning the mill. There are a few exceptions: colloidal grindings can only be carried out in ball mills by adding a liquid. Fresh fruit and vegetables can be homogenized in knife mills without material loss. However, in most cases, moist samples have to be dried (e.g. leaves) before they can be subjected to size reduction. When choosing the drying method and temperature, care must be taken that the properties of the sample to be determined are not altered in any way. That is especially important with regards to volatile components such as furans, polychlorinated biphenyls (e.g. PCBs) and dioxins.

Usually, these types of sample can only be air-dried at room temperature. RETSCH's TG 200 is suitable for gentle and quick drying. It uses the fluidized bed drying method, similar to that of industrial dryers. For many products the drying time is as little as 5 to 20 minutes. Further methods include vacuum and freeze drying as well as drying in drying ovens.

Key Features and Specifications

Gentle drying, dispersing and mixing also of temperature sensitive materials
Very short drying times (~ 5 - 20 min)
Powerful fan for optimal air throughput
Easy handling
Interval operation for better mixing of the fluidized bed
Wide range of accessories including various containers
Memory for up to 9 SOPs
Motor with no brushes allows for long service life

More Information

Data sheet