Auger screws and bucket elevators in an fluff waste recycling line


Auger screws and bucket elevators in an fluff waste recycling line *Sinfimasa designed a double auger with screw conveyors and a bucket elevator for a difficult material, consisting of very different fractions.* Heterogenous material On this occasion, our client is a waste treatment plant that needed to transport fine particles from a shredding machine. The bulk material to be transported was very heterogenous: it consisted of 60% rubber and plastics, 15% glass, soil and minerals, 10% textiles and wood, 10% paints and oxides, and 5% metals. The material flow was 7 tonnes per hour, with a grain size of 0 to 20 mm, a density of 600 kg/m3, and a moisture content of 10 to 15%. Closed screw conveyors A conveyor belt was difficult to use, as spillage of material would cause an environmental problem. The solution was to design a system of closed screw conveyors that prevent the spillage of product. In addition, it also avoids manpower in the route and possible accidents with rollers and drums of a conveyor belt. Robust and maintenance friendly To ensure efficient extraction from the hopper that stores the material to be processed and to prevent product accumulation, Sinfimasa designed a double auger in a trough to allow inspection along the entire route and facilitate maintenance. The auger was manufactured in HB400 anti-wear steel and a SEW geared motor was installed with sufficient power but a short rpm ratio to reduce wear and extend the conveyor’s useful life. Oversized bucket elevator For the elevation of the material, a bucket elevator was designed and manufactured with an anti-abrasive belt and stainless steel buckets with a filling level of 40%, just like the auger: low filling level and transport at low rpm to avoid product return and wear. Geared motor power ratings were also standardised to save on spare parts costs. More information Conveyors by Sinfimasa: https://sinfimasa.com/en/conveyor-machines-welcome/#

Heterogenous material

On this occasion, our client is a waste treatment plant that needed to transport fine particles from a shredding machine. The bulk material to be transported was very heterogenous: it consisted of 60% rubber and plastics, 15% glass, soil and minerals, 10% textiles and wood, 10% paints and oxides, and 5% metals.
The material flow was 7 tonnes per hour, with a grain size of 0 to 20 mm, a density of 600 kg/m3, and a moisture content of 10 to 15%.

Closed screw conveyors

A conveyor belt was difficult to use, as spillage of material would cause an environmental problem. The solution was to design a system of closed screw conveyors that prevent the spillage of product. In addition, it also avoids manpower in the route and possible accidents with rollers and drums of a conveyor belt.

Robust and maintenance friendly

To ensure efficient extraction from the hopper that stores the material to be processed and to prevent product accumulation, Sinfimasa designed a double auger in a trough to allow inspection along the entire route and facilitate maintenance.
The auger was manufactured in HB400 anti-wear steel and a SEW geared motor was installed with sufficient power but a short rpm ratio to reduce wear and extend the conveyor’s useful life.

Oversized bucket elevator

For the elevation of the material, a bucket elevator was designed and manufactured with an anti-abrasive belt and stainless steel buckets with a filling level of 40%, just like the auger: low filling level and transport at low rpm to avoid product return and wear. Geared motor power ratings were also standardised to save on spare parts costs.