Importance of Wood Waste Management
Wood waste, generated from forestry activities and log processing at lumber mills, includes branches, bark, and other residual materials. Efficient screening helps in sorting these materials for further processing and use, reducing waste and promoting sustainability.
Machines Used in Wood Waste Material Screening
Trommel Screens: These screens are essential equipment in wood waste screening. They consist of a cylindrical drum with perforated plates that rotate, separating materials based on size. Larger pieces like branches and bark are sorted out while fines and smaller particles pass through.
Vibrating Screens: These screens are essential equipment in wood waste screening. They consist of a cylindrical drum with perforated plates that rotate, separating materials based on size. Larger pieces like branches and bark are sorted out while fines and smaller particles pass through.
Excavators and/or Hydraulic Log Loaders: These machines are used to feed the screening machines with the jumbled up wood waste material that is usually all bunched up into big piles from the initial logging or log processing at lumber mills.
Materials Separated in Wood Waste Screening
Biomass: During screening, biomass such as wood chunks, wood chips and sawdust is separated for use in biomass boilers, energy production, or as raw materials for wood-based products.
Inert Materials: Inert materials like stones, soil, and metal fragments are filtered out during screening. Metal screws or bolts specifically that could be lodged into wood materials are collected by a magnet while passing through the grinder. These materials can be diverted for appropriate disposal or recycling.
Further Processing of Separated Materials
Wood chunks, wood pieces and short logs extracted during screening are often processed further into uniform sized wood chips suitable for pulp and paper production, mulching, or biofuel production.
