WASHING | TECHNOLOGY
line is dedicated to natural colour HDPE with the other dedicated to coloured HDPE and PP contain- ers. Both lines are capable of processing natural colour HDPE for food grade applications. The recycling system at the plant also includes a double stage friction washing system, which is also incorpo- rated at the PET facilities.
Latin American projects Amut recently announced the advance of three PET recycling projects in Latin America. It has complet- ed the installation of a new 6,000 kg/hr recycling line in Lima, Peru that is the largest in the country producing rPET for bottles. A facility at Città del Guatemala in Guatemala to develop a 3,000 kg/hr integrated sorting and washing solution is also underway with the erection phase begun in January. At the same time, a 3,000 kg/hr facility at a site in Bogotà, Colombia is also under construction. The water, energy and chemically efficient plant is designed to reduce freshwater usage to 1.1 l for each kg of high purity rPET flakes produced. Amut offers a complete recycling system for PET
bottles or for HDPE bottles/LDPE film. The PET line incorporates a pre-washing and delabeling step after bale breaking that removes labels and provides product surface cleaning that extends the life of grinder blades. After passing through metal detection, NIR polymer detection and a waste control step, material is wet ground and further cleaned in a turbo washer. A patented high friction hot washing unit automatically removes glue, organics, label remnants and other impurities from the flake down to 0-70 ppm in a continuous but non-destructive operation. Flakes are typically subject to a cold rinse, mechanical centrifuge, drying step, and final grinding. Product can be sent to a mixing silo, dedusting unit, coloured flake and metal detection step before being moved to a flakes storage silo. Amut offers systems from 1,250 kg/hr up to 6,000 kg/hr. Amut’s standard recycling systems for HDPE
bottles or LDPE films can process HDPE bottles at rates from 500 to 4,000 kg/hr, and LDPE films at rates of 500 or 1,000 kg/hr. The washing plant, which includes a decantation trough after a pre- shredding step, wet grinding and high friction washing, recirculates 70-80% of the water for washing in a water treatment step. The remaining 20-30% of washing plant water is purged from the system, about 1 l per kg of rPE made. Hosokawa Polymer Systems has been active in the plastics recycling market, offering a PET washing system, an LDPE washing system and a friction washer. The design of its PET washing system for
www.plasticsrecyclingworld.com
PET bottle recycling is based on experience gained in manufacturing a large number of recycling lines in various countries and obtaining detailed user feedback to continually improve flake quality and output capacity with low operation costs. The company offers the washing unit in several models with throughputs from 1,000 kg/hr to 5,000 kg/hr. The unit can be powered by electricity or steam, can use washing detergent or water for the wash and features stainless steel construction. Hosokawa Polymer System also offers a LDPE wash system which can handle agricultural films, post-consumer film or post-commercial and post- industrial film including 100% stretch material. The unit is a special film friction washer developed just for film cleaning and can be integrated with a wet granulator with a high cutting capacity or sink/float tanks for material separation. The unit is constructed from stainless steel and incorporates a unique film squeezer for drying film flake to 6% moisture without special heating. Hosokawa Polymer Systems also offers the Friction Washer suited to pre-cleaning of plastics during a fully integrated washing line process, the company said. Auger type screws are utilised to mix and convey material while adding water via internal spray tubing. The Friction Washer has a significant screen area for removal of water and contaminants. The stainless steel unit features high speed rotation and multiple water pipes for addi- tional water injection, the company said.
CLICK ON THE LINKS FOR MORE INFORMATION: �
www.krones.com �
www.lindner-washtech.com �
www.erema-group.com �
www.amutgroup.com �
https://circularplasticsaustralia.com �
https://pactgroup.com �
www.polysys.com �
https://sorema.it �
https://ganeshaecosphere.com
July/August 2024 | PLASTICS RECYCLING WORLD 23
Above: Amut has been the partner of Circular Plastics Australia on three of its projects to recycle PET and polyolefins
IMAGE: AMUT
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