|
|
|
|
| Roller Screens |
|
 |
|
|
|
|
|
 |
|
|
Roller screens are applied for the selection and classification of
most different materials.
Fields of Application:
|
|
- predominantly applied in case of difficult screening
conditions, e.g. if the application of a screening plant
is not practical because of moist feed materials that
could clog the screen deck
- predominantly applied for coarse screening and for
transporting the coarse lumps to the crushing installation.
|
|
| Fig. 1 |
|
|
 |
|
| Various Feed Materials: |
|
|
- rock and associated products, like limestone, marl etc.
- var. kinds of coal, like mineral coal, lignite etc.
|
|
|
Fig. 2 |
|
|
Feed Capacities / Feed Sizes / Classification
Rock and associated products, like limestone, marl etc.:
|
|
 |
|
- Limestone: up to approx. 2,500 t/h
- Feed sizes: up to approx. 1,500 mm
- Classification
Coarse range: from approx. 80 mm up to approx. 200 mm
Fine range: from approx. 30 mm up to approx. 80 mm
|
|
|
|
Fig. 3 |
|
|
| Var. kinds of coal, like mineral coal and lignite etc.: |
|
- Coal: up to approx. 5,000 t/h
- Feed sizes: up to approx. 1,000 mm
- Classification
Coarse range: from approx. 80 mm up to approx. 200 mm
Fine range: from approx. 20 mm up to approx. 80 mm
|
|
|
|
 |
|
| Various Drive Concepts: |
|
| Fig. 4 |
|
|
- Chain drives for driving several screen shafts simultaneously > SRK > chain drives
- Single drives, driven by the gearmotors of the screen shafts > SRE > single drives
|
|
|
| Width of Roller Screen and Number of Shafts: |
|
|
|
- Width: from 1,200 mm up to 3,500 mm
- Number of shafts: up to 42
|
|
|
| Various Designs: |
|
- Step grates with single segments for loosening the material
- Step grates for material recirculation
- Siebra®-unit with roller screen + swivel-arm crusher for
material reduction
- Multi-purpose roller screens with fine and coarse grates
as well as with swivel-arm crusher
|
|
| Various disc forms for material separation and transport: |
|
|
- Arched discs
- Elliptical discs
- Star discs
- "Ripper discs" under swivel-arm crusher
|
|
|
Fig. 1
Fig. 2
Fig. 3
Fig. 4 |
Roller screen with single drives for the classification of coal
Roller screen with chain drives for the classification of limestone
Step grate with chain drives
Step grate with chain drives |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
