Waste Wood Processing

INPUT: waste wood

OUTPUT: grinded material < 60 mm (2.4'')

Waste wood comprises industrial wood residuals (wood residues from timber processing and composite materials – consisting primarily of wood) and used wood (the designation of used products made of solid wood, wooden materials or composite materials – consisting primarily of wood), mass percentage more than 50 per cent.

Waste wood categories:

• Category A I: natural or only mechanically treated waste wood (not more than insignificantly contaminated with foreign substances)
• Category A II: glued, varnished, coated, painted or otherwise treated waste wood without organic halogen compound and without wood protection agents,
• Category A III: waste wood coating with organic halogen compound, wihtout wood protection agents,
• Category A IV: waste wood treated with wood protecction agents such as railway sleepers, line poles, hop poles, vine stakes and other types of waste wood

PLANT EXAMPLE

Input material: waste wood
Throughput: 20 – 30 t/h
Output grain size: < 60mm (2.4'')
Utilization output: thermal utilization, recycling

PROCESS DESCRIPTION (Example)

The input material is charged into the Shredder DW 3060 by wheel loader or excavator. During this step, a first pre-sorting is carried out and large contaminants such as metal and rocks can be sorted out.

The DW 3060 can be equipped with an optional comb extension, which ensures a consistant shredding. After the shredding, iron parts are separated by means of an overband magnet.

The shredded material is transferred into the grinder AK 430 for further grinding. The AK 430 can be equipped with different baskets according to the desired grain size.

The iron parts are separated by means of an overband magnet.

According to the application, the material is finally screened to the desired grain size by means of the trommel screen SM 620 or a star screen.

In order to achieve a pure product, it is also possible to separate the remaining iron parts from the fine fraction with an overband magnet.

The oversize could be returned to the grinder AK 430 to be grinded once again.

The whole shredding and grinding process can also be carried out by means of the shredder DZ 750, which combines a shredder and a grinder in one machine.