Compost Refining Line Lugo

Compost Refining Line Lugo

Gruppo Hera SpA

Lugo | Ravenna - Italy
  • System description: Compost refi ning
  • Waste processed: Raw compost
  • Plant capacity: 25 t/hour

This compost refi ning line is part of the municipal waste composting facility that Ecomaster’s client has built at Lugo di Ravenna. Refi ning includes screening and separation of inerts. This compost refining line is part of the composting plant that Ecomaster’s client has built in Lugo di Ravenna. Stabilized compost is loaded by wheel loader into the line feeder which, besides allowing material feeding, is equipped with a dosing system consisting of two swiveling rotors. A conveyor belt receives the material unloaded by the feeder and takes it up to the inlet of a rotary screen. The screen has a double-stage trommel, equipped with two sets of screening panels with different-sized openings. The first undersize material, the small-size one, is collected by a conveyor built into the screen and taken to a fluidized-bed separator to separate inerts. This machine performs ballistic separation of inert materials, such as glass and stones. Inerts are separated from compost by the oscillating movement of the separation chute and by the fluidification of the processed material. Fluidification air is blown into the material by a ventilator through the holes of the perforated plate which forms the bottom of the oscillating chute. A dust control system, including a second ventilator, an air cyclone and a bag filter, treats the air drawn from the hood of the inerts separator and from the screen covering. Two conveyor belts collect the refined compost and inerts coming out from the fluidized bed separator. Two other conveyors are used to take large-size material and intermediate-size material separated by the rotary screen to their respective collection areas. The intermediate-size material may be recycled in the composting process, while the large-size material is composed largely of rejects.

31_Lugo_di_Ravenna_GB-web.pdf