Designed for cleaning and separation of materials with different relative densities.
Three stages of washing and separation in one process.
It can work with both film and rigid plastic waste. Configurable for specific tasks. It can work as part of various technological lines.
Separating heavy waste
Sand, metallic waste that get deposited in the first part of the separation tank are removed from the bottom with screws. Using effective waste removal methods significantly improves the quality of work done and ensures the continuity of the process.
Separating light waste
Polystyrene balls, pieces of wood, as well as oils are separated in a propeller mixer with a grading screen, where light wastes float to the surface and are removed by a stream of water into special pockets.
Friction effect
The material is repeatedly washed with friction screws and drums with propellers. The machines are designed specially to enable quick cleaning of large volumes. This is also facilitated by the use of a circulation pump that provides internal water circulation.
The sink/float separation tank is an important part of the plastic waste washing line. The sink/float separation tank we manufacture differs significantly from the competitors' analogues, where the waste material separates into two parts, one part sinks, the other part flows out. This is often not enough when recycling LDPE films, HDPE containers, etc. since the raw materials in most cases contain wastes like polystyrene balls, grease and oils, wood chips, which float together with the material being processed and subsequently clog the filter of the pelletizing line. This leads to a deterioration in the quality of re-granulate. The GRANGARO sink/float separation tank has a special design for the removal of such contaminants. Moreover, our machine combines the use of friction screws and traditional push drums for flushing material. This combination and the special screw and shaft design we developed significantly increase the quality of washing. In our separation tank, the material is constantly, forcibly mixed and kept under water, this prevents the formation of a layer of “cake” containing wastes on the surface. In addition, the material is subject to a constant friction effect.
Equally important is the continuous automated removal of heavy waste from the bottom of the separation tank. Every recycler of post-consumer polymers knows that if the cleaning system at the bottom of the sink/float separation tank is ineffective, it leads to frequent stoppages and time-consuming cleanings. Our design includes several systems used for the removal of waste from the bottom of the separation tank. Based on our experience, we know what really works and what doesn't, and we have taken this matter seriously. We use screw type loading conveyors, as well as a special internal mixing system, internal partitions and water circulation.
Overall dimensions, mm
реализованные проекты
Before entering the separation tank, the material is ground in a shredder or crusher, where it is usually pre-rinsed with water. The tank's structure includes several sections- feeding section, friction screw section, oil and light waste separation section, section for unloading clean material and two sections for unloading sunk contaminants. The first stage entails the separation of heavy material, such as metals, sand, heavy polymers, and light wastes, such as foam, wood, oils and grease. Some material settle at the bottom, from where it is removed using screw conveyors, some flow into special pockets and is washed away by a stream of water. At the end of the process, the polymer is free off most impurities. After cleaning, the raw material is fed into the centrifuge where it undergoes intensive washing.
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