We operate wood shredders and chippers with an output of 15 to 50 tonnes of wood material an hour. Processed material is then loaded, and transported to desired location or alternatively bought up.
When it comes to wood materials of various origins, due to partial contamination or particular dimensions, some may not be suitable for chipping. Chipping requires wood waste free of nails or any other contaminants such as logging residues, wood pulps or scraps.
Chipping, in comparison with shredding, is type of wood materials processing, during which more homogenous, even, and smaller parts are produced. They also contain minimum of sawdust, or shavings.
Compared to wood shredders, a chipper is capable of processing longer pieces of wood. However, when it comes to chipping, we buy waste free wood materials without iron or any other contaminants.
We use PETERSON 4700, MORBARK 3800, MORBARK 3000 shredders and a MUS-MAX 10XL chipper, which is towed by a JOHN DEERE 8310R tractor.
This type of equipment is designed for shredding of wood materials, and processing of wood biomass – so in comparison with chippers, they are able to process more contaminated, spatially larger, and more heterogenous material. Mechanical parts that do the work are shredding hammers that grind given materials – this produces output that contains bigger, but also smaller (sawdust) pieces of wood.
Industrial wood shredders are not intended for processing metals, stones, non-friable and fibrous materials like rubber, ropes, or other weaved materials.
Materials are fed into the feed chute of a wood shredder or chipper by a loader (manipulator), or with a hydraulic arm. We use following loaders:
- JCB 436 with its 5 m3 bucket and a log grapple
- JCB 541-70 with its 2 m3 bucket
- JCB 542-70 with its 2.5 m3 bucket and a log grapple
Hopper consists of a feeding chute, with capacity of 6,7m³, in which 4 reinforced feed conveyors are placed. These conveyors push material underneath the feed roller into rotating shredders. Same applies to the chipping process, with the difference of shredders being replaced with chipper blades.
Material is crushed or chipped until it achieves desired fraction. When it does achieve the desired fraction, material falls through sieves into a discharge conveyor which has magnetic separator. This magnetic separator collects any metallic debris from chips. Size of fractions, which come in 5, 8, or 10 centimetres, is achieved through interchangeable sieves.
Entire process is monitored through a control unit which monitors number of engine revolutions per minute and hydraulic pressures. This allows the machine to automatically adjust direction of feed conveyor and pressure of the feed roller to maximize production.
Output of shredders or chippers depends on input materials, size of fractions, and loading method. In any case, it is possible to process 15 to 50 tonnes of wood material. All 3 shredders and a chipper can unload material directly into trucks. This way it is possible to save time and money, which would be necessary during loading process.
If input material contains metal objects like nails or clips, during shredding they will be separated to a certain extent. However, the more foreign objects input material contains, the more of it will be present in the final product.
It is necessary to bear in mind that when ordering wood shredding or chipping services, machines require a certain amount of space for operation. For example, technical parameters of the MORBARK WH 3800 mobile unit are as follows:
Operating length – 17.10 m
Operating width – 2.99 m
Transport height – 4 m
Discharge conveyor height – 1.22 m
Hopper measurements (width x length) – 1.50 m x 4.30 m