More options to plug in when the price of district heating goes up

Instead of burning expensive recycled wood, forest waste such as stumps and bark can be processed using a star screen and one or more Norditek windscreens.

Biofuel prices are rising sharply, making more types of wood and forest waste interesting to look at. By efficiently separating and treating forest waste, we convert it into fuel with high energy value. This is particularly valuable at a time when the need for good energy is high and forest waste can be used as a resource to produce heat or electricity.

Results from stumps and bark: High energy value and low ash content.

For stumps, it is necessary to crush the waste first before passing it on to a star screen and one or more wind screens. Approximately 70% of the input material then comes out as finished fuel free of stones and gravel, in the right size for a bio-boiler (5-100 mm). 20% of the material needs to be processed again before it can be burned and about 10% of the input material is usually 0-5 mm gravel.

Low ash content

In addition to obtaining a high energy value, this solution helps to reduce the ash content of the recycled material. High ash content can cause problems in the combustion process and lead to pollution of emissions. By reducing the ash content, Norditek makes forest waste more useful and environmentally friendly as a fuel.

The right size and quality for a bio-boiler

Norditek's star screen bark plant and windshifter show how efficient recycling can turn waste into a valuable resource. By transforming forest waste from low energy value and high ash content to low ash content and high energy value, Norditek contributes to reducing the load on landfills and promoting sustainable use of forest resources. Solutions for wood waste such as bark and biomass have been worked on by Norditek for many years.

Our stumps plant: Crusher, Star Sifter and windshifter

Norditek uses a combination of three machines to efficiently recycle forestry waste with stumps: crushing, star screening and windshifter.

1. crushing

Crushing is the first step in the process where forest waste is broken down into smaller pieces. This makes the material more manageable and prepares it for the next steps in the recycling process. 

2. star sifter

The star sieve is used to separate materials of different sizes. In the case of forestry waste, this means that stumps and other larger pieces of wood can be screened from smaller materials such as branches and leaves. 

Backer's star sieves have a separation limit down to 5 mm, which is unique for star sieves. Backer's 5 mm rubber stars have a large diameter which increases the lifespan and ensures that the material is properly screened.

3. windshifter

windshifter is a technique used to remove light materials, such as the wood, from the heavy waste. It works by creating an air stream that blows away the light particles while retaining the heavier waste. This is particularly important as it reduces the ash content of the recycled material, which is crucial for increasing its energy value.

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Feel free to contact us and we will tell you more about how you can maximize your recycling.