Applications plastic separation
All on a quantity basis relevant material groups are separated by the density separation technology and thereby also removed from impurities and contraries. This is achieved by putting all required separation steps in series in form of a cascade. The amount of separation steps is dependent on the amount and type of rigid plastics that are supposed to be used for mono-fraction separation. Talking about plastic packaging waste this could be i.e.: PP, PE, PA, PS, PET, PVC. The selection is done by considering the mass share of the relevant materials which have been separated for mono-fraction economic efficiently. Separation steps can be retrofitted at any time, as the plants are built modularly. The single separation units can be used several times, to conduct different separation steps. You only have to adapt the required density of the separation liquid. The machinery of the several separation units is identically and thus can be used for all different tasks. The separation unit with the highest density eliminates all severe impurities and contraries such as sand, stone and all sorts of metal for sure.
Polyolefines PP PE
Usually common recycling plants operating at the market produce a mixture of PP and PE, with irregularly variable shares. These rigid plastics can be separated into the material groups PP and PE by using the density separation technology. Furthermore it is possible to use a differentiated density separation to also divide polyethylene into their main components HDPE and LDPE.
The treatment of films is a challenge because of a big surface and low bulk density of these plastics. It is impossible for most of the separation systems to do this treatment. But not for us: Our density separation technology not only separates the polyolefines PP and PE from other film materials, it does it safely, with high precision and with high throughputs. This is the basis for a successful economic mechanical recycling.
PET beverage bottles
When treating PET bottles all required material separation steps can be done by our density separation technology. During the first separation unit the polyolefines PP and PE are separated from all other plastics. The polyolefine mixture can be separated during the next step in order to get pure PP and pure PE. Also PET bottles with barrier layer can be treated by separating the PET from the barrier layer. Other possible impurities such as metal, sand and more is also separated from the PET by the density separation technology. After the final step the plastics PET, PA, PP and PE are available as mono-fraction materials.
The density separation technology also allows to separate PVC windows being delivered from the collection systems from all other distracting materials. All lighter plastics, impurities and rubber can be separated in one density separation step. A further step is the separation of all heavier materials, such as ferrous metals, non-ferrous metals and other impurities. What remains, is the mono-fraction cleaned PVC, ready to reuse in the production.
Electronic scrap WEEE
During the first treatment steps metal parts are extracted from the electrical and electronic scrap and the further materials is disengaged from contraries to the greatest possible extent. Now, all remaining plastics can be separated into the most important material fractions by the density separation technology. These are mainly PS + ABS, PE and PP. After the following drying the next step is the separation of the mixture PS and ABS by a dry separation system.
Car dismantling ASR
Metal parts are taken from the shredder light fraction and disengaged from all remaining materials, contraries and light components (fluff) to the greatest possible extent during the first treatment steps. The next step is to disengage all chlorine and highly metal including plastics by the separation system. The remaining utilizable plastics can be now either be used as fuel surrogates or separated into the single plastic types, i.e. ABS, PP ans PE in further following density separation steps.
Electric cable recycling
After taking out the metal, electric cables are grinded and disengaged of contraries during the beginning of the treatment. Afterwards mono-fraction PE is produced by the first separation unit. The remaining PVC plastics can be disengaged from remaining parts of cable metals by a further separation unit, now. Usually there still is a profitable part of cable metal inside the plastic fraction after the cable recycling. That is why this post-separation has become economically very interesting.