INFRARED DRUM IR-BATCH 70/90

FOR BATCH APPLICATIONS

The development of a discontinuous version presents new possibilities. The KREYENBORG batch drum IR-BATCH 70/90 is the ideal solution for the thermal treatment of single batches. The filling and discharging of the machine is effected fully automatically. The real process may be controlled by a defined residence time or a specific required temperature of the material.

APPLICATION FIELDS FOR THE BATCH DRUM IR-BATCH 70/90

• drying of plastic pellets (z.B. ABS/PC, PC, LCP, wood-PP-compounds)
• crystallization and drying of PET, PPS, PLA (ground stock/pellets)
• drying processes with high input humidities > 1 %
• heating of pellets and ground stock before the subsequent processing (e.g. PVC, PE) among others forthroughput increase in the extrusion
• heating processes for the discharge of rest oligomers and volatile contents
• drying tasks in the foodstuff and pharmaceutical field
• roasting of coffee beans

FUNCTIONALITY

1. CHARGING OF THE DRUM
The complete charge (batch) is continuously filled into the drum via a feed hopper. The input is controlled by a stop valve.


2. THERMAL TREATMENT
The drum rotates with preset speed clockwise. With this direction of rotation the material overflows the main baffle mixing elements. An additional mixing may be achieved by means of further pyramidal mix ing elements. The infrared radiators are switched on and heat the material to the preset temperature. If required, temperature ramps with drying profiles may be adjusted (option control system).


3. DISCHARGE OF THE DRUM
The thermal treatment is completed after a de fined period or after the reaching of a specified required temperature. For discharge the direction of rotation of the drum is reversed. Thus the material underflows the main baffle mixing elements and is fed into the outlet funnel.