- Dry wood (moisture content < 20%)
The Fine Grinder HK is used for efficient fine grinding of pre-shredded input material down to a very accurate granulate size and even finest powder, while keeping dust to an absolute minimum. The HK is adept at grinding hard-to-handle materials such as paper, cardboard, or wood (either clean or residual). The Fine Grinder is often combined with a Universal Shredder FRP to pre-shred the input material and remove large contaminants before further processing.
The input material with a particle size of 10-30 mm is usually fed into the machine with a screw or band conveyor. In order to prevent harmful contaminants from entering the machine, non-ferrous fractions are normally separated by a pneumatic system (stone trap) and ferrous materials are removed by a magnet.
The cutting unit consists of hammers that are mounted on the rotor. Once the material is ground to the proper size, airflow from an integrated fan pushes the ground material through a screen with very fine mesh. This minimizes the amount of dust generated and maximizes the throughput efficiency of the Fine Grinder. The HK is capable of producing a fraction with very high quality and accurate granulate size, which ranges from 8 mm down to finest powder.
The Fine Grinder HK is designed with ease of maintenance in mind. A large swing door provides easy access to the cutting unit so that wear parts can be mounted or dismounted quickly. No tools are required to open the swing door clamps.
A special design feature of the HK is the integrated fan that performs two functions: assistance with the fine grinding and with transport of the material. An extra fan is not required.