Feed granulators. RDF SRF ASR granulators. Granulation. Pelletizing.
Pellet machines for sawdust and straw. Pellet machines for garbage. Pellet machines for feed.
Granulators for digestate. Granulating presses for sewage sludge.
Nawrocki Pelleting Technology
Efficiency and effectiveness of the operator and granulator
ARGAS - QDES.60 - CALS
Industrial GR granulators are characterized by high efficiency at the lowest possible operating costs. This is due to the combination of high-performance mechanical solutions ( ARGAS , QDES.60 , CALS and other systems) and program control of work in the form of the Automatic Granulator Control System ( AIAC is, among others, the Intelligent Granulator Operator , Active Performance Optimization System and its other elements). The following technical solutions have a significant impact on reducing the changeover time, which can be spent on production and increase revenue and profit.
Depending on the model and type of mixture, Nawrocki PT granulators consume only 8kWh per tonne of feed.
This is possible thanks to the high integration of the mechanical design with the software controlling and optimizing the granulator operation (AIAC).
8
kWh/t
Low matrix rotation speed
The design of GR1 and GR2 granulators has been designed to obtain the lowest possible rotational speeds of the die. Lower rotational speed ensures higher quality of granulate when processing raw materials that deviate from optimal values (such as fraction size, moisture, type of raw material, composition of the mixture, etc.). This is possible due to the longer time of granule formation in the die holes. Lower rotational speed increases flow resistance, increases the temperature of the forming process. This affects better densification of raw material particles in the forming holes of the die. Dies with lower rotational speed are lighter, which makes them easier to assemble and are cheaper to buy.
Large matrix work surface
Thanks to the modern and massive design of the drive unit, we can use dies with large working surfaces. They guarantee the maintenance of the assumed efficiency on all types of raw materials. High torque and power (in terms of dm2 of the die surface) in combination with the Active Performance Optimization System ACOS prevents clogging or blocking of the die. This translates into increased efficiency by extending the time of stable production.
Forced Feedstock Feeding Unit (FFFU)
The independent paddle feeder of the raw material to the granulation chamber directs its flow to the scrapers and then under the rollers. The raw material is not allowed to flow back outside the granulation chamber. In combination with the arc rollers, the efficiency of the granulator increases. FFFU is used especially for raw materials with low bulk mass such as biomass, plastics. Not used in standard feeds.
Die Slow Motion System (DSMS)
Reduces die change time by at least 30%. Enables effortless rotation of the pelletizing unit for die assembly or disassembly. Independent drive with pneumatic actuator is controlled by an external pilot (rod) of left-right rotations
Steam extraction in biofuel granulators
Granulators are equipped with a double steam extraction system, the task of which is to quickly remove the steam accumulated during granulation outside the granulation chamber. The first is installed in the conditioner directly above the discharge to the granulation chamber. The second is installed on the granulation chamber cover. Both are connected to a gravity chimney system made of acid-resistant steel. It is possible to install an optional system to block the return of steam to the conditioner.