Method and device for fragmenting and/or weakening material by means of high-voltage pulses
US10046331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 2012 |
| Grant date | Aug 14, 2018 |
| Priority date | — |
| Expiry date | Mar 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J2237/038
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for fragmenting and/or weakening material by high-voltage pulses is provided. The material and a processing fluid are arranged in a processing zone formed between two electrodes such that the entire processing zone is flooded with processing fluid, and high-voltage pulses are applied to the electrodes such that high-voltage breakdowns occur between the two electrodes and/or such that predischarge channels are formed without breakdowns. An electrode with a metallic conductor is chosen for at least one of the two electrodes, the conductor being provided partially or completely with an insulator or insulating coating at the working end of the electrode that is in contact with the processing fluid, the permittivity of the insulator/insulating coating being at least 75% of the permittivity of the processing fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.