MACHINERY | RECYCLING & GRANULATORS
Right: THE EV 916 granulator, from CMG’s Evoluzione range, has a new design of rotor blade
penetration,” said Giorgio Santella, managing director of CMG. “The rotor blade is mounted on the edge of the rotor holding modules and not on a holding block.” He added that the rotation of the rotor does not
produce the detrimental ‘drag’ effect, meaning that the mass of material being ground in the cutting chamber does not rotate with the rotor – producing lots of dust. “The rotor takes up only 30% of the cutting chamber volume, versus alternative ordinary granulators with a 70/30 ratio,” he said. “This feature alone allows more than double the quantity of material to grind in the cutting chamber.” Energy saving is also an important factor in
recycling – and Santella cites Rigenera, a recycler of rigid plastics that operates a number of CMG granulators. Rigenera needed to produce high quality, non-dusty regrind with high dimensional homoge- neity and in large quantities. It began with an EV 616 granulator – part of the Evoluzione (or Evolu- tion) series – with a capacity of 3,500 kg/h. A larger unit, an EV 916 – with a capacity of 5,000 kg/h – was added two years ago. It included CMG’s Adaptive Motor Power (AMP) control, which allows self-adap- tation of the operating conditions of the granulator according to workload. Santella says AMP helps to reduce maintenance and optimise electricity consumption. Last year, Rigenera added a second EV 616 to its operations. All CMG units for recycling applications now
feature the AMP function, which Santella says is unique in the size reduction industry. “The granulator can autonomously establish which power level to adopt to carry out its work, according to quantity of material to be ground, shape, weight, thickness, type of plastic, and temperature of the piece,” he said. A CMG granulator consumes 20-25 Wh/kg of material processed, which Santella says is around
half that of a conventional unit – and has a return on investment (ROI) of less than 12 months.
Difficult materials Bruno Folcieri makes granulators for large through- puts and ‘difficult’ materials – and, says the company, are noted for their strength and durability. “Our competitors are more aggressive on the
commercial side, but investing in quality gives us an edge,” said Esmeralda Zoppi, COO of Bruno Folcieri. Zoppi says the company’s Easy Power granulator series – for PCR – are powerful machines with heavy-duty construction that are easy to maintain. With PCR often being very abrasive (due to contamination), blades can degrade more quickly than when handling cleaner processing waste. Damage can also occur to the structure of the machine itself. For this reason, the cutting chamber on the Easy Power is lined with wear-resistant but replaceable metal sheets that preserve integrity. The company also offers the Top Line series, which incorporates a “wear-resistant and reliable” rotor built from a single block of forged steel. Models are aimed at intensive applications such as
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IMAGE: CMG
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