Labour requirement is minimal and product losses during handling are negligible The Rotary Vacuum Dryer can be equipped with different designs at agitator, depending on the material to be dried. Steam, thermic fluid or hot water can be used as the heating medium. When hot water is used for heating, this can be electrically heated when steam is not available the agitator is usually a hollow cylinder with hollow arms - this allows a considerable increase in heating surface, thereby reducing the drying time. For special applications, double ribbon agitator or disc type agitator can be provided. The unique quick opening discharge valve is operated by a handwheel.
Some products form lumps during drying.
In such cases, breaker rods are provided to inhibit lump formation and allow quick and complete drying. The drying in a Rotary vacuum Dryer is a batch opearation. Drying time depends on material being dried, amount of solvent or water to be removed, desired final moisture content, permissible jacket temperature etc. The rotary vacuum dryer is available in sizes ranging from 100ltrs to 20,000 ltrs gross volume.