System and method for an electrodynamic fragmentation

Patent metadata

Field	Value
Publication number	US-2021069724-A1
Application number	US-202017082313-A
Country	US
Kind code	A1
Filing date	Oct 28, 2020
Priority date	Apr 28, 2018
Publication date	Mar 11, 2021
Grant date	—

Abstract

A fragmentation system for electrodynamic fragmentation of material contains a feed and an outlet for transporting material along a transport path in a transport direction. At least one high-voltage pulse source is provided, each of the high-voltage pulse sources contains at least one first electrode and at least one second electrode for generating a high-voltage discharge in a discharge chamber. The transport path has a fractionation section, and the fractionation section extends through the discharge chamber. A selection device for selectively extracting the material on the transport path is provided in order to channel material and/or fragments of the material having a diameter smaller than a minimum diameter past at least one portion of one of the fractionation sections.

First claim

1 . A fragmentation system for electrodynamic fragmentation of material, the fragmentation system comprising:
an inlet and at least one outlet for the material; a transport path leading from said inlet to said at least one outlet for transporting the material along said transport path in a transport direction; at least one high-voltage pulse source, said at least one high-voltage pulse source having at least one first electrode and at least one second electrode for generating a high-voltage discharge in a discharge chamber; said transport path having at least one fractionation section, said at least one fractionation section extending through said discharge chamber; and a selection means for selectively extracting the material on said transport path in order to channel the material and/or fragments of the material having a diameter smaller than a minimum diameter past at least one portion of said at least one fractionation section.

2 . The fragmentation system according to claim 1 , wherein said selection means contains said at least one first electrode and said at least one second electrode.

3 . The fragmentation system according to claim 1 , wherein said at least one first electrode and said at least one second electrode form a rail.

4 . The fragmentation system according to claim 1 , wherein said at least one fractionation section forms an inclined plane sloping downward in the transport direction.

5 . The fragmentation system according to claim 1 , wherein said at least one first electrode and said at least one second electrode have a longitudinal extent, wherein said at least one first electrode and said at least one second electrode are disposed with the longitudinal extent in the same direction as the transport direction.

6 . The fragmentation system according to claim 1 , wherein said first and second electrodes form a chute for the material, said chute sloping downward in the transport direction in relation to a direction of gravity.

7 . The fragmentation system according to claim 6 , wherein a length and/or an inclination angle of at least one of said first and second electrodes of said chute and/or a distance between said first and second electrodes of said chute is variable.

8 . The fragmentation system according to claim 1 , further comprising a conveying apparatus for conveying a medium in a media conveying direction in order to support a transport of the material.

9 . The fragmentation system according to claim 1 , wherein a distance between said at least one first electrode and said at least one second electrode ( 10 b ) is variable and/or settable.

10 . The fragmentation system according to claim 1 , wherein said at least one high-voltage pulse source is configured to output a high-voltage pulse having a working voltage of greater than 10 kV as the high-voltage discharge.

11 . The fragmentation system according to claim 1 , wherein said at least one high-voltage pulse source is one of a plurality of high-voltage pulse sources for outputting high-voltage discharges having different working voltages.

12 . The fragmentation system according to claim 1 , wherein the transport path is configured for conveying more than ten tons of the material per hour.

13 . The fragmentation system according to claim 3 , wherein said at least one fractionation section sloping downward as an inclined plane has a slope angle for transporting the material based on a downhill force, wherein the slope angle is settable for setting a transport speed for the material along said at least one fractionation section.

14 . The fragmentation system according to claim 1 , wherein said at least one fractionation section has conveying structures.

15 . The fragmentation system according to claim 1 , wherein the transport path has at least one sieve structure for extracting extremely small fractions of the material.

16 . A method for electrodynamic fragmentation of material, which comprises the steps of:
transporting the material from an inlet toward an outlet along a transport path; providing a fractionation section in the transport path and at least one high-voltage pulse source with at least one first electrode and at least one second electrode; generating, via the at least one high-voltage pulse source, a high-voltage discharge in a discharge chamber, the discharge chamber being disposed between the at least one first electrode and the at least one second electrode; and channeling the material and/or fragments of the material having a diameter smaller than a minimum diameter past at least one portion of one of the fractionation section.

17 . The method according to claim 16 , wherein the method is carried out by a fragmentation system according to claim 1 .

Assignees

• Diehl Defence Gmbh & Co Kg
• Fraunhofer Ges Forschung

Inventors

• Stark Robert
• Thome Volker
• Seifert Severin
• Dittrich Sebastian
• Bickes Christian
• Urban Juergen

Classifications

• B02C2019/183

  Crushing by discharge of high electrical energy · CPC title

• B02C19/18 Primary

  Use of auxiliary physical effects, e.g. ultrasonic waves or irradiation, for disintegrating · CPC title

• B02C23/14

  with more than one separator · CPC title

• B02C23/10

  with separator arranged in discharge path of crushing or disintegrating zone · CPC title

• B02C23/38

  in apparatus having multiple crushing or disintegrating zones · CPC title