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Construction and way of working
The machine (the FlexHammer™) is constructed for the treatment of waste materials such as household waste, industrial waste, wood waste, recycled wood, green waste, bark etc.
The knife bridge, grates, the freely swinging hammers and the reject door are important for the intended process, to decompose/size reduce residue.
The reject door makes it possible to release uncrushable materials so that damages in the machine can be avoided. The so called knifes by the knife bridge “traps/stops” the uncrushable object so that it cannot pass further down into the crusher. The knifes are insensitive to contamination in the form of uncrushables. The hammers exercise a pressure on object and by that also on the reject door which opens and lets the unchrushable object out and away from the rotating rotor. The knifes also function as part in the size reduction and is especially important when handling elastic materials. The velocity of these materials are decelerated so that the hammers which passes in between the knifes can rip it apart.
Several crushing steps in the FlexHammer™
The FlexHammer™ have many steps of crushing in the same chamber:
- The crushing starts immediately when the material enters the mill. The hammers expose the material for an intense treatment and materials are also crushed against eachother.
- At the knifebridge the material starts to take its final shape and size. The knife are very important for the effective treatment of elastic materials such as plastic foil, textiles, fresh branches, bark in stripes etc. The knifes decelerate the material while the hammers rip it apart. The knifes are not sensitive to contaminants such as rocks or metals. They are also part of the safety system for the release of uncrushables through the reject door.
- Guaranteed finished fraction size. In most cases the end-product is used as fuel in boilers and/or process industries. The fuel quality, its purity, particle size etc. is meaningful for transport, storage, dosage etc. but most of all for the combustion.
Horisontal feeding with apron feeder is the most common and most flexible application. A horizontal feed is necessary when handling long and/or bulky materials. Householdwaste and bark (or prebroken materials of other types) are examples of materials that can be fed vertically. An even feed by the operator with a corresponding even feed into the mill is of great importance for high capacity and even quality of the end product.
Plant – Waste fuel preparation system
The machines can be installed as stationary or mobile (FH1200, 1500 and 1800). Automatice surveillance and control systems (SCADA) assures optimal usage of the installed machine equipment.
Running costs – economy
Thanks to long experience of machines for crushing and shredding, long experience of building and designing plants, long experience of running in house plants and not the least long experience of using biofuels in house we are able to guarantee our customers delivery of technically and economically well balanced equipment.
As an example of production cost, have a look at this: