MAS DRD (Double Rotor Disc) waterless cleaning and drying
The DRD (Double Rotor Disc), from MAS, combines waterless cleaning and thermal drying for soiled plastics in a single machine, providing efficient and cost-saving drying and cleaning in one process.
In the past, it has been difficult to separate contamination from waste products - such as agricultural stretch film, industrial and packaging waste, plastic fibres, hollow bodies, plastic cups, etc - without wet washing. The product’s one-step process system is capable of removing up to 90% of dry contamination like sand, organics and soil by friction. Combining two DRDs in series, the second step can remove approximately 80% of all remaining contamination which passed through the first step. Additionally, moisture will be reduced from as high as 25% to below 3%.
There are three primary applications for the product: as a standalone dry cleaner, washing without water through friction; installed behind a conventional wet washing process as a drying facility; and installed in front of a water-washing plant to pre-clean granulate to reduce water contamination. In the case of the standalone dry cleaner, there is significant economic benefit as no water treatment or disposal costs are involved. There is also a lower capital investment plus reduced service and maintenance costs.
The waste material, such as film flakes fed into the DRD, is pre-sized to less than 100 x 100 mm, with other materials determined case by case. In most applications the waste is pre-shredded, with foreign material such as stones, metal strapping and banding wire removed to avoid damage to the shredder and the product.
The system is offered in two sizes, with DRD18 suitable for up to 500 kg/h throughput and DRD24 for up to 1000 kg/h, with a special version DRD24-DS for heavily contaminated agricultural film.
Phone: 03 9555 8121
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