OPTIMAL PRODUCT DISCHARGE OF MOIST GROUND MATERIAL
This mill grinds chopped soft and hard wood with a feed size up to standard G50 wood chips, and a water content up to 60%, in one step to a fineness required for wood pellets. The W series consists of four sizes with a drive-power range between 75 and 250 kW.
The use of waste wood as a substitute fuel in coal-fired power plants is gaining enormous importance in the energy transition. The Wide chamber mill W plays an important role in this context. You can find out more in our article Waste wood as a substitute fuel and alternative to coal.
Advantages of the wide chamber mill W
Efficient Grinding of Moist or Sticky Products
- For products with up to 60 % water content or tendency to adhere
- Optimised impact zone with hardened impact plates on both sides of the inlet
- Rotor design also suitable for large pieces of material that are difficult to shred
- Variable grist spectrum by adjusting the beater circumferential speed (when using a frequency converter), the screen perforation and the beater configuration
Reliable Operation and Long Service Life
- Robust welded steel construction for continuous industrial operation (24/7)
- Grinding chamber equipped with wear elements to protect the housing, easy to change
- Durable, optimised rotor design, dynamically balanced, operation in both directions of rotation
- To protect the screens: foreign body catch trap for impurities inside the grinding chamber
High Availability with Low Downtimes
- Rotor with short run-down time < 6 min without brake
- Wide-opening doors allow easy and quick access to the machine interior
- 2-part screen segments without frame, easy and quick to change segment by segment
High Safety of Personnel and Plant
- Standstill monitoring with door safety device
- ATEX design according to zone 21 (II 2 D) inside and zone 22 (II 3 D) outside optionally possible
Technical Data
- Robust welded steel construction, symmetrical housing for operation in both directions of rotation.
- Grinding chamber equipped with wear elements to protect the housing walls, easy to replace
- Armored inlet flap with position switch for change of direction of rotation
- Optimized impact zone with armored impact plates on both sides of the inlet for efficient size reduction
- Debris trap for contaminants inside the grinding chamber as screen protection
- Durable, optimized rotor design, dynamically balanced, equipped with 6 mm beaters
- Beaters easy and quick to turn and change with special changing device
- Wide opening doors, easy access to the grinding chamber and for changing the sieves and beaters
- 2-part sieve without frame, easy and quick to change segment by segment
- Tested and certified in pressure shock resistant and flameproof design (0.4 bar)
- Variable grain spectrum via variable beater circumferential speed (when using a frequency converter),
- Sieve perforation and beater configuration; depending on requirements.
| W 400 | W 700 | W 1000 | W 1200 | |
|---|---|---|---|---|
| Grinding chamber diameter (mm) | 680 mm | 680 mm | 680 mm | 680 mm |
| Screen width (mm | 400 mm | 760 mm | 1000 mm | 1250 mm |
| Grinding chamber area (m²) | 0.6 m² | 1.1 m² | 1.5 m² | 1.8 m² |
| Dimensions and Weight | ||||
| Length* x width x height (approx. mm) | 2250 x 1665 x 1150 mm | 2710 x 1665 x 1150 mm | 2950 x 1665 x 1150 mm | 3150 x 1665 x 1150 mm |
| Weight without motor (approx. kg) | 1550 kg | 1700 kg | 1950 kg | 2250 kg |
| Drive | ||||
| Motor size (kW) | 75 kW | 110 – 132 kW | 160 – 200 kW | 200 – 250 kW |
| Speed 50 Hz/60 Hz (rpm) | 1500/1800 | 1500/1800 | 1500/1800 | 1500/1800 |
| Speed with frequency converter 30-60 Hz (rpm) | 1800 – 3600 | 1800 – 3600 | 1800 – 3600 | 1800 – 3600 |
* Depending on motor size Measuring surface sound pressure level < 90 dB (A) (under load)
Download data sheet
