WASHING | TECHNOLOGY
Right: The flake step dryer from B+B Anlagenbau
recycling of food and drink packaging. “Packaging needs to be detectable for the optical separation technologies to work efficiently, for example, by avoiding multi-layer materials,” he says. “The post-consumer plastic recycling process requires
different plant configurations to be able to cope with a wide range of impurities. The design of the washing process and especially waste water recycling requires great experience. We need more effective pre-sorting to get high purity plastic streams into the washing lines. The largest amount of post-consumer plastics collected are films, which have very low bulk densities and therefore the throughput capacities of the washing lines are limited. We are currently working on larger washing lines with capacities of greater than 2,000 kg/h, as we already have for processing rigid plastics.”
be provided as flakes, pellets or preforms. B+B Anlagenbau, which is part of the Heilig
Group – a leader in waste recycling and bulk materials handling –specialises in supplying complete solutions for plastics recycling and washing technologies, and pre-sorting plastics out of mixed waste streams, electrical engineering, and heat transfer through customised heat exchangers. According to Sales Director Daniel Simmonds, the company has been undergoing a transformation over the past decade. “In 2009 B+B was acquired by the Heilig Group, a powerful and leading industrial focused conglomerate serving customers globally,” he says. “For more than 30 years previ- ously, B+B had been active in the field of plastics recycling equipment and plant engineering, and was one of the pioneers of this innovative and forward-looking industry. We have seen recycling technologies come and go. Today, we offer a wide range of machines and plant components for the reprocessing of all kinds of plastics. The Heilig Group acquisition offered our customers financial stability and broader access to the expertise and knowledge of the wider group. ”The restructure also allowed us to turn the technical knowledge within the company into a project-orientated organisation. Technical knowl- edge alone is insufficient to serve customers. We have now been able to add project management skills, financial instruments for research and development, in-house manufacturing, well organised sales and management, and a profes- sional after-sales department. We are now in a position to tell the market that we are able to offer not only washing systems, but full process recy- cling solutions.” Simmonds agrees that the main focus of the industry at present is on efficient processing and
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Flake step dryer Simmonds cites a number of technical areas of interest that the plastics recycling industry currently needs to address. These inlude a need to lower consumption of fresh water and energy. There is also a constant demand for increasing yields and higher quality recyclate. One the latest products that the company has developed to meet these industry requirements is its flake step dryer for drying and cleaning thermoplastic flakes after the washing process. The company says that due to its operational
characteristics and maintenance performance, it is an important asset in a recycling plant. The flake step dryer is built in a round machine housing. A three-phase AC-motor is attached to the top of this housing with a shaft and rotor directly flanged to it. The machine is placed on a damper in order to reduce vibrations to a minimum. The product infeed is achieved by a screw that enters the machine housing at the bottom. The screw feeds
Below: B+B Anlagenbau installed washing technology for Ekokem in Finland
July/August 2018 | PLASTICS RECYCLING WORLD 47
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