Fraunhofer Research Institution for Materials Recycling and Resource Strategies IWKS
EHF operating principle
The EHF-Technology: Selective and effective
The technology is based on shock waves which are generated by pulsed high voltage spark discharges. The shock waves propagate through the surrounding carrier medium and hit the material. The short but very intense mechanical impacts preferably attack weak spots within the material: The fragmentation occurs at macroscopic joinings (clamped, bonded, screwed) or microscopic phase or grain boundaries.
The specific weakening of interfaces within the material enables a selective separation that is largely independent of the degree of comminution. As a result, there is a high liberation of materials without excessive comminution: As much as necessary, as little as possible.
