Saw by-product
As a sawmill by-products (SNP) in the woodworking industry are all wood residues referred to the incision and processing of sawing round wood in saw mills incurred. These are mainly sawdust and wood shavings . They are an essential raw material for the wood-based panel industry in the manufacture of chipboard and other materials, and they are also used as a raw material in the manufacture of wood pellets and paper production.
Seizure
In sawn timber production, the amount of sawn timber is around 60% of the main product sawn timber. In Germany, the sawmill by-products as wood chips falls more than half of, a good third consists of wood shavings and sawdust, the rest are rinds and splinters . For Germany, the annual volume of saw by-products is estimated at around 17.0 million solid cubic meters ; in Austria, around 9.3 million solid cubic meters of saw by-products were produced in 2006.
use
The quantities of sawmill by-products occurring in Germany are practically completely used. The most important customer is the wood-based panel industry, which requires increasing quantities. Saw by-products cover a good third of the raw material requirements of the wood-based panel industry. The proportion of sawmill by-products in the wood of chipboard is around 50%, with medium-density fibreboard (MDF) it is 70%. The wood pulp and pulp industry processes comparatively small quantities, the need for energy generation (pellet production and wood chip power plants) has been increasing sharply for several years, thus increasing the demand for this raw material. Since these are by- products , the supply of saw-by-products depends primarily on the demand for sawn timber. An increase in the demand for sawing by-products, as is currently the case with the increased use of energy, can lead to a shortage and price increase, so that instead of sawing by-products, other raw material sources such as other industrial waste wood or residual forest wood are increasingly used.
Individual evidence
- ^ Udo Mantau, Holger Weimar, Christian Sörgel: Wood raw material balance Germany, inventory 2002. Project presentation. ( pdf ( Memento of the original from October 27, 2007 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this note. ).
- ↑ Udo Mantau, 2008: Development of the material and energetic use of wood. University of Hamburg, Wood Industry Center. ( pdf ( Memento of the original from February 1, 2012 in the Internet Archive ) Info: The archive link has been inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this note. ).
- ↑ Ina Erhardt, 2008: resource-efficient provision of raw materials. Keynote speech at the Wood Logistics Workshop 2008 ( pdf ).
- ^ Gertraud Moser (Federal Environment Agency), 2008: Business to business relations in the Austrian wood industry. Federal Environment Agency, Report REP-0165. ( pdf ).
- ↑ Torsten Leps (Rosenheim University of Applied Sciences), 2009: Wood-based materials - state of the art, opportunities, developments and trends. Presentation at the CARMEN Forum March 30, 2009 ( pdf ).
