Nauta Vacuum Dryer

Hosokawa Micron designs and manufactures vacuum dryers for a wide range of industrial applications, including the processing of solids in the chemical, pharmaceutical, food and metal industries. Our technologies enable precise, low-temperature drying of heat-sensitive, solvent-laden and cohesive materials—while maintaining product integrity, safety and energy efficiency.

From powders and filter cakes to pastes and viscous slurries, our vacuum dryers are engineered for consistent performance and clean operation—even with sticky or temperature-sensitive products. Whether you’re processing APIs, chemical intermediates, food ingredients or metal powders, we tailor each solution to your product and process.

The Nauta® Vacuum Dryer is a universal batch dryer suitable for drying materials such as powders, granules, pastes and viscous slurries, especially when products are heat sensitive, contain solvents and are toxic or explosive.

How it Works

In a Hosokawa vacuum dryer, thermal energy is transferred through the heated vessel wall. Product is gently agitated to maintain uniform temperature and prevent clumping. Under vacuum, the boiling point of the solvent is reduced, allowing it to evaporate at low temperatures. Vapors are continuously removed via a vacuum line, then condensed and collected in a closed-loop system—ideal for solvent recovery and safe handling of hazardous substances. This closed system ensures safe, efficient drying of moisture- or solvent-containing products, while minimizing contamination and thermal degradation.