Release
More accessible phases
Release of inclusions and minerals along the grain borders, better preserving the phase of interest.
SELFRAG na SENS
Selective fragmentation of complex materials.
SELFRAG's high-voltage pulse technology fragmented solids into water along the grain borders, favoring mineral release, surface cleaning and sample preparation with less mechanical contamination.
90-200 kV
pulsos no SELFRAG Lab
45+
institutions with installed systems
1 kg
by batch in the laboratory system
HVP Technology
Applied electric energy where conventional grinding loses selectivity.
High-voltage pulse fragmentation explores differences in conductivity between mineral and material phases. The discharge occurs in water, crosses the material and tends to follow natural interfaces, releasing components without direct mechanical contact.
How the process happens
The goal is not simply to reduce size. The proposal is to release valuable phases, inclusions or particles better preserving their integrity for later stages of separation, characterization or analysis.
1
Water sample
The solid material is positioned in an aqueous chamber between electrodes.
2
Controlled pulse
High voltage discharges are applied at defined intervals.
3
Grain frontiers
Energy favors separation into natural interfaces of the material.
4
Material released
The fractions are more accessible for separation, analysis or processing.
Technical benefits
Selective liberation with reduced mechanical damage.
For research and industry, technology is especially interesting when the integrity of the phases, the purity of the material and the release efficiency are determining.
Cleaning
Less core damage
Removal of adhered material and surface cleaning without the typical abrasion of mechanical methods.
Contamination
Less mechanical contact
Fragmentation without grinding tools acting directly on the sample, reducing the risk of cross contamination.
Acessibilidade
Downstream processes
Improves access to physical separation, chemical attack, mineralogical characterization or material recovery.
Applications
From sample preparation to industrial process development.
SELFRAG fits into projects where traditional crushing and grinding can destroy structures, mix phases or introduce unwanted contamination.
Mining and geometallurgy
Mineral liberation, pre-weakening, grade-based separation and studies of routes with lower comminution energy.
Recycling and waste
Recovery of metals in incineration ash, electronic waste and matrices in which small valuable fractions need to be released.
Geosciences and research
Preparation of minerals for petrography, geochronology, isotopic studies and grain separation with less structural damage.
High purity
Non-contact comminution for silicon, glass and materials sensitive to metal contamination by conventional crushing.
SELFRAG systems
Settings for laboratory, R&D and industrial lines.
The system choice depends on the sample type, batch mass, desired particle size distribution, automation level and integration with separation or characterization steps.
Laboratory
SELFRAG Lab
Research platform for selective fragmentation of complex materials, route evaluation and preparation of special samples.
- Pulsos de 90 a 200 kV
- Up to 5 pulses per second
- Up to 1 kg per batch
- Faraday cage closed and operation secure
Industrial
High Purity Sizing
Industrial solution for reduction of size without direct mechanical contact in high purity materials.
- Applicable to silicon, glass and high purity materials
- Adjustable size range according to process
- Integration with productive lines
- Alternative to mechanical crushing when purity is critical
Why evaluate with SENS
Applications requiring selective sample liberation.
SENS supports the technical evaluation of the application, configuration definition, interface with the manufacturer and local deployment. The focus is to understand the material and the stage of the process in which selective fragmentation actually generates gain.
- Technical discussion on matrix, mass, particle size and analytical objective.
- Indication of the best route between laboratory, R&D and industrial operation.
- Support for specification in projects, edits and technical proposals.
- Integration with other characterization and process control techniques.
Technical materials
SELFRAG technical information for the application.
The most appropriate documentation depends on the market of interest: mining, geosciences, recycling, industrial waste or high purity. We can send targeted materials and discuss the feasibility of the trial.
Mining and geosciences
Selective fragmentation for mineral release, grain preparation, geometallurgy and academic research.
Request catalogRecycling and waste
Applications in incineration ash, electronic waste and metal recovery in complex matrices.
Request applicationHigh purity
Non-mechanical contact processing for materials sensitive to metal contamination.
Request specificationTechnical information based on public data from SELFRAG: HVP technology, SELFRAG Lab, applications and industrial units.