Stonefex

It pays off

improves fuel quality by removing more than 90 percent of stones and insert materials. Biomass processors profit from better customer acceptance of their fuels, higher sale prices, and the ability to make a saleable product from material contaminated with stones.

Everywhere applicable

The input material to the Stonefex is usually a usable biofuel fraction with a particle size from 10…20–150 mm for example:

• Shredded rootstocks
• Green cuttings (pre-shredded with or without composting phase)
• Screen residue from compost
• Forestry residues

Mobile and economically

The single-axle trailer configuration makes the machine easy to  manoeuvre, and it is approved for 80 km/h road speeds, so transportation to the site is no problem. The standard version of the stone separator uses grid electrical power. As an option, a diesel generator is available.

Patented separating system

The input material is loaded onto the intake conveyor. In the expansion chamber, a patented system of pressure and suction blowers separates the material into a stone fraction and a cleaned usable fraction, which conveyors take out to opposite sides. Fines and any light materials are collected in the container downstream of the suction fan.