Rotary Vacuum Dryer offer clean, simple and effective method of drying wet cake, powder and even slurry. Labor and energy costs are minimal compared to tray dryers and product losses during handling are also negligible. Additionally valuable organic solvents can be conveniently condensed and recovered. Working Principle:
The drying in a rotary vacuum dryer is a batch operation under vacuum. It is possible to dry heat sensitive materials at well below boiling points of water and solvents. Drying time depends on material being dried, amount of solvent or water to be removed, desired final moisture content, permissible jacket temperature etc. The volume of wet material loaded into the dryer is usually restricted to 50% of gross volume.
The Rotary Dryer is a type of industrial dryer employed to reduce or to minimize the liquid moisture content of the material it is handling by bringing it into direct contact with a heated gas to evaporate the water. Rotary Dryers are suitable for drying of wide range of materials continuously because of its ability to process materials having considerable variation in size and composition.
Despite introduction of new technologies the long established Rotary Dryer is still widely regarded as the workhorse of many process industries. The robust yet simple construction combines flexibility with reliability enabling this type of dryer to handle vast range of materials.
Rotary dryers are suitable for a wide variety of products, ranging from granular, powdered and crystalline materials, through to filter cakes and sludges for the food, chemical and mineral industries.