Mechanische Verfahrenstechnik und Aufbereitung

Fluff Separation from granulated waste plastics to be used in blast furnace operation

The plastic granulate material produced from recycled sales packaging that arises from the "Green Dot" system, can be used as a substitute reducing agent and energy source. Up to particle sizes of 10 mm the material can be injected into blast furnace via the tuyères by using a pneumatic conveying system and by means of several injection lances.
Particularly with regard to particle size individual lots can contain a higher amount of fine and fibrous particles that build up fluff agglomerates when being agitated as it is the case during pneumatic conveying and injection. In consequence of which the pipes and filters of the system are choked. The occurrence of fluff therefore requires additional treatment of the material by using a zigzag sifter.