High Voltage Pulse Power
Nature's energy, precision engineering. We master HVP to fragment materials along grain boundaries, the most relevant alternative to conventional crushing.
World leader in selective fragmentation
Today SELFRAG is the world leader in the selective fragmentation of solid materials using high voltage pulse power electrical discharges. This technology is the most relevant alternative to conventional crushing and grinding techniques.
As a result, it presents an unprecedented potential to develop a new generation of sustainable and economically profitable materials processing solutions. Our highly skilled team has brought industrialised and patented high voltage pulse power products and systems to the market, satisfying our clients for over a decade.
Fragmentation along grain boundaries
We use high voltage electrical pulses to selectively fragment solid composite materials along grain boundaries. High electrical pulses between electrodes into water release the material very efficiently.
100-200 kV pulses, triggered in microseconds
High Voltage fragmentation uses the difference in the conductivity of materials to release valuable materials and free them from impurities. Electrical discharges of 100-200 kV are triggered in controlled time intervals, producing precision fragmentation without mechanical contact.
Benefits of selective fragmentation
Release valuable materials and free them from impurities. HVP technology delivers four measurable benefits over conventional crushing.
Liberation
Cleaning
Reduction
Accessibility
Where HVP technology is used
Recycling
- New recycling methods
- Recycling of metals from incinerator slag (IBA)
- Electronic waste (future)
Manufacturing
- High purity fragmentation
- Crushing of polysilicon
- Recycling of monosilicon
Research
- Sample preparation tool
- Geosciences
- Recycling research
- Mining research
Mining
- New extraction approach
- Pre-weakening and grade splitting of ore before grinding (future)
Our Machines
We design, build and support high voltage pulse power systems for laboratory research and industrial production, from single-sample lab systems to fully automated high-purity crushing lines.
The SELFRAG Lab
An innovative solution for the fragmentation of complex materials such as ores, electronics and recycled materials. Deployed in over 45 universities and research institutions worldwide.
Delivers 90-200kV electric pulses up to 5 times per second. Fully enclosed Faraday cage, safe during processing, 79dB maximum, meets all EU regulations.
Capacity: up to 1 kg per batch · Dimensions: 0.86 x 2.06 x 2.37 m · Power: 3x400V · Setup: 1 day commissioning + 1 day training
High Purity Sizing Equipment
The only solution worldwide which offers a touchless crushing method for high purity materials such as poly- or monosilicon and glass. First installed in 2016, now integrated into electronic-grade polysilicon crushing lines at major global producers.
Performance: up to 8'000 t.p.a. throughput per HVP-generator · Cost: 28% lower operating costs than alternatives · Size range: 2-150mm user-selectable
Interested in our machines?
Contact us for technical specifications, pricing, and customization options.