ROTARY TUBES

PRINCIPLE:
Rotary tube is composed of one slightly sloped shell, fitted with two riding rings supported by four rollers and driven by a chain drive or a girth gear assembly. Internal spiral flights and lifters allow conveying of product from the inlet to the outlet of the shell and insure a proper and efficient thermal exchange between product and process gas. Rotary tubes can be used in various configurations: co-current, counter current, indirectly heated through the shell or by means of internal tubular exchanger. They are dedicated to a large range of divided solids from fine powders to large particles.

ADVANTAGES OF THIS TECHNOLOGY:

• Handling of heterogeneous products with a large range of shape size and density;
• Proven technology;
• Heavy duty;
• High drying / calcining temperature;
• High flexibility;
• High evaporation;
• Large capacity.

MAIN APPLICATIONS:
All kind of powders, crystals, beads, granules, fibers, cakes, chips, for all industries (chemical, food, mineral, etc.).

MAIN PROCESSES:
Drying, cooling, calcining, reaction, reduction, dehydration, solvent removal, granulation, coating, polishing, shake-out, etc.

PILOT TEST LABORATORY:
For determination of rotary tube parameters and possibility to perform semi-industrial tests.

COMESSA CAN PROPOSE DIFFERENT TYPES OF ROTARY TUBES:
 
- COMBINED DRYER / COOLER:

• With intermediate transfer box;
• With central tube. 

- INDIRECTLY HEATED:

• With heating mantel;
• With “built-in” fluid exchanger;
• With “built-in” air exchanger.

- SPECIAL APPLICATIONS:

• Granulator;
• Shake out drum;
• Coater / Polisher.

https://comessa.fr/pdf/RotaryDrums-BD.pdf