EP3234297B1 - Device and method for crushing rock by means of pulsed electric energy - Google Patents
Device and method for crushing rock by means of pulsed electric energy Download PDFInfo
- Publication number
- EP3234297B1 EP3234297B1 EP15832913.6A EP15832913A EP3234297B1 EP 3234297 B1 EP3234297 B1 EP 3234297B1 EP 15832913 A EP15832913 A EP 15832913A EP 3234297 B1 EP3234297 B1 EP 3234297B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- process zone
- fluid
- water
- electric energy
- electrically insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 108
- 239000011435 rock Substances 0.000 title claims description 19
- 239000012530 fluid Substances 0.000 claims description 62
- 239000000463 material Substances 0.000 claims description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 230000000694 effects Effects 0.000 description 6
- 239000013535 sea water Substances 0.000 description 5
- 230000035939 shock Effects 0.000 description 3
- 239000012212 insulator Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
- E21B7/15—Drilling by use of heat, e.g. flame drilling of electrically generated heat
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/18—Other methods or devices for dislodging with or without loading by electricity
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C50/00—Obtaining minerals from underwater, not otherwise provided for
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/14—Drilling by use of heat, e.g. flame drilling
- E21B7/143—Drilling by use of heat, e.g. flame drilling underwater
Definitions
- the present invention relates to a method for processing material at the bottom of a body of water, like the bottom of the sea, by application of electric energy, comprising providing electrodes in a process zone proximate the material for providing electric energy for crushing the material.
- WO9924694 (A1 ) relates to a method for crushing rock by means of pulsed electric energy. Costs of a dredging project may rise high as a result of a small volume percentage of rock, because the device used is unsuitable for dredging this material. Additionally it is not always possible to use explosives. Therefore WO9924694 (A1 ) aims to crush rock in a simple manner into pieces of a small size and provides therefore a method for crushing rock comprising the generation of a shock wave with a preprogrammed form, strength and length of time for crushing rock.
- WO9924694 alleges that because the shock wave is given such a preprogrammed form, strength and length of time, the crushing of rock produces a desired size of pieces, and/or the crushing of rock takes place over a desired surface of the rock and/or the crushing of rock takes place up to a desired depth in the rock.
- RU2008118585 relates to electro hydraulic breaking and crushing method for solid materials.
- Two electrodes are placed inside a cylindrical airtight housing. Shock waves are precisely directed through hollows and linings arranged on the housing.
- US 5 845 854 A shows an example of a method, for use on land, of solid insulator destruction which destroys solid insulators by electric pulse discharges.
- the method of US 5 845 854 A is not suitable for offshore use.
- JP H 10 227193 A ( Komatsu ) describes a method for processing material by application of electric energy, wherein the method comprises providing electrodes for application of the electric energy in a process zone proximate the material for crushing the material.
- the invention aims to provide a more effective method for processing material at the bottom of a body of water, like the bottom of the sea, by application of electric energy. More effective has to be understood as more crushed rock per applied electric energy.
- Another object of the invention is to improve a known method for processing material at the bottom of a body of water by application of electric energy, in that a problem associated therewith is at least partly solved.
- Yet another object of the invention is to provide an alternative method for processing material at the bottom of a body of water by application of electric energy.
- this is realized with a method for processing submerged material at the bottom of a body of water, like the bottom of the sea, by application of electric energy, comprising providing electrodes for application of the electric energy in a process zone proximate the material for crushing the material, and displacing of fluid of the body of water away from the process zone to outside the process zone before application of the electric energy, wherein the displacing of fluid of the body of water away from the process zone comprises introducing an electrically insulating body in the process zone.
- fracturing rock is the plasma-hydraulic (PH) or electrohydraulic rock fracturing, and spark discharge drill. While the method specifies the processing of the material at the bottom to crushing, the processing may also include fracturing, pulverizing, eroding etc.
- the method according to the invention is particularly useful when laying pipelines on the bottom of the sea.
- obstacles like boulders or men made concrete structures, can be removed so that the pipe laying can continue.
- the displacing of fluid of the body of water away from the process zone comprises introducing an electrically insulating fluid under pressure in the process zone.
- the insulating fluid may be a gas, a liquid or a mixture thereof.
- the method comprises on site producing the electrically insulating fluid.
- substantially all fluid of the body of water is displaced away from the process zone to outside the process zone such that the application of the electric energy causes providing an electric current through the material.
- the electric energy is applied directly to the submerged material.
- this is realized with a device for processing submerged material at the bottom of a body of water, like the bottom of the sea, by application of electric energy, wherein the device comprises electrodes configured to be arranged in a process zone proximate the material for providing an electric current through the material, and means for displacing fluid of the body of water away from the process zone to outside the process zone before application of the electric energy, wherein the means for displacing fluid of the body of water comprises an electrically insulating body arranged proximate the electrodes.
- the means for displacing fluid of the body of water comprise a discharge opening arranged proximate the electrodes for introducing an electrically insulating fluid under pressure in the process zone.
- the device comprises a container filled with the electrically insulating fluid, which container is in fluid connection with the discharge opening.
- the electrically insulating fluid may be pressurized with any suitable means, like a pump.
- the device comprises measuring means arranged in the process zone for measuring electrical conductivity in the process zone.
- the electrodes comprise a pair of concentric electrodes.
- This pair of concentric electrodes is in particular useful when a layer of fluid of the body of water remains on top of the submerged material before application of the electric energy. As described above, it is then possible to create a shockwave in the layer of fluid of the body of water on top of the submerged material. This shockwave then has its crushing effect on the submerged material.
- the invention further relates to a device comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- the invention further relates to a method comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- Fig. 1 shows in side view electrodes 1 in a process zone while executing a prior art method.
- the process zone is filled with sea water 4. Because of the electrical conductivity of seawater, a discharge 12 between the electrodes 1 will take a path through the seawater and will therefore not have a desired effect of crushing the submerged material 6.
- Fig. 2 shows in side view electrodes 1 in a process zone 2 while executing a method according to the invention.
- the electrodes 1 are arranged proximate the material 6 at the bottom of the body of water 4. Here, the electrodes 1 do not contact the material 6.
- the submerged material 6 at the bottom of the sea is processed by application of electric energy, shown as a spark 12.
- Seawater 3 is displaced (see fig. 3 and 4 ), that is removed, from the process zone 2 away from the process zone 2 to outside the process zone 2 before application of the electric energy.
- the electric energy is more effective in terms of crushed material at the bottom of the sea.
- the material 6 at the bottom of the sea comprises rock.
- Fig. 3 shows in side view a device according to the invention for processing submerged material 6 at the bottom of the sea by application of electric energy.
- the fluid of the body of water 4 is displaced away from the process zone 2 through introducing an electrically insulating body 5 in the process zone 2.
- the electrically insulating body is an example of a means for displacing fluid of the body of water 4 away from the process zone 2 to outside the process zone before application of the electric energy.
- the electrically insulating body 5 is arranged proximate the electrodes 1.
- the electrically insulating body 5 extends between the electrodes 1. In this case, the electrically insulating body 5 contacts the material 6 at the bottom of the sea.
- the electrically insulating body 5 is shown in a position wherein the fluid of the body of water is partly displaced away from the process zone to outside the process zone. In this position of the electrically insulating body 5, a layer of fluid of the body of water remains on top of the submerged material before application of the electric energy. This way, it is possible to create a shockwave in the layer of fluid of the body of water on top of the submerged material. This shockwave then has its effect on the submerged material. In this embodiment the electric energy is applied to the submerged material indirectly through the layer of fluid.
- Fig. 4 shows in side view a further embodiment of a device according to the invention.
- the device is provided with a nozzle 8 as a means for displacing fluid of the body of water 4 away from the process zone 2 to outside the process zone 2 before application of the electric energy.
- the nozzle 8 is arranged proximate the electrodes 1.
- the nozzle introduces an electrically insulating fluid 7 under pressure in the process zone 2.
- the electrically insulating fluid 7 displaces fluid of the body of water 4 away from the process zone 2 to outside the process zone 2.
- the electrically insulating fluid under pressure has a low electrical conductivity, in particular below 500 mS/m, more particular below 50 mS/m.
- the electrically insulating fluid is produced on site.
- the device comprises a container 9 filled with the electrically insulating fluid 7.
- the container 9 is in fluid connection with the nozzle 8.
- the insulating fluid 7 is pressurized by any suitable means.
- the device has a shielding member 10 for holding the electrically insulating fluid 7 in the process zone 2.
- the shielding member 10 is arranged around the process zone 2 for holding the electrically insulating fluid 7 in the process zone 2.
Description
- The present invention relates to a method for processing material at the bottom of a body of water, like the bottom of the sea, by application of electric energy, comprising providing electrodes in a process zone proximate the material for providing electric energy for crushing the material.
-
WO9924694 (A1 WO9924694 (A1 WO9924694 (A1 -
WO 2006/023998 A2 relates to pulsed electric rock drilling, fracturing and crushing methods on land. Herein a number of techniques are described to process material by application of electric energy through electrodes. -
RU2008118585 - In connection with processing material by application of electric energy,
US 5 845 854 A shows an example of a method, for use on land, of solid insulator destruction which destroys solid insulators by electric pulse discharges. The method ofUS 5 845 854 A is not suitable for offshore use.JP H 10 227193 A (Komatsu - With the known methods, the effect in terms of crushed rock is poor, in particular when executing prior art methods in seawater. There is room for improvement in that respect.
- The invention aims to provide a more effective method for processing material at the bottom of a body of water, like the bottom of the sea, by application of electric energy. More effective has to be understood as more crushed rock per applied electric energy.
- Another object of the invention is to improve a known method for processing material at the bottom of a body of water by application of electric energy, in that a problem associated therewith is at least partly solved.
- Yet another object of the invention is to provide an alternative method for processing material at the bottom of a body of water by application of electric energy.
- According to a first aspect of the invention this is realized with a method for processing submerged material at the bottom of a body of water, like the bottom of the sea, by application of electric energy, comprising providing electrodes for application of the electric energy in a process zone proximate the material for crushing the material, and displacing of fluid of the body of water away from the process zone to outside the process zone before application of the electric energy, wherein the displacing of fluid of the body of water away from the process zone comprises introducing an electrically insulating body in the process zone.
- The displacing of fluid of the body of water away from the process zone to outside the process zone before application of the electric energy enables to lower the electrical conductivity in the process zone and therefore more electric energy is applied to the material. As a consequence, more crushed material at the bottom of the sea is obtained. Usually, the submerged material comprises rock.
- This type of method is in the art referred to with e.g. pulsed power technology, fracturing rock is the plasma-hydraulic (PH) or electrohydraulic rock fracturing, and spark discharge drill. While the method specifies the processing of the material at the bottom to crushing, the processing may also include fracturing, pulverizing, eroding etc.
- The method according to the invention is particularly useful when laying pipelines on the bottom of the sea. In performing the method, obstacles, like boulders or men made concrete structures, can be removed so that the pipe laying can continue.
- In an embodiment of the method, the displacing of fluid of the body of water away from the process zone comprises introducing an electrically insulating fluid under pressure in the process zone. It will be apparent that the insulating fluid may be a gas, a liquid or a mixture thereof.
- The electrically insulating fluid has a low electrical conductivity, in particular below 500 mS/m, more particular below 50 mS/m.
- According to an aspect of the invention the method comprises on site producing the electrically insulating fluid.
- In an embodiment of the method, fluid of the body of water is partly displaced away from the process zone to outside the process zone such that a layer of fluid of the body of water remains on top of the submerged material before application of the electric energy. This way, it is possible to create a shockwave in the layer of fluid of the body of water on top of the submerged material. This shockwave then has its crushing effect on the submerged material. In this embodiment the electric energy is applied to the submerged material indirectly through the layer of fluid.
- In an embodiment of the method, substantially all fluid of the body of water is displaced away from the process zone to outside the process zone such that the application of the electric energy causes providing an electric current through the material. In this embodiment the electric energy is applied directly to the submerged material.
- According to a further aspect of the invention this is realized with a device for processing submerged material at the bottom of a body of water, like the bottom of the sea, by application of electric energy, wherein the device comprises electrodes configured to be arranged in a process zone proximate the material for providing an electric current through the material, and means for displacing fluid of the body of water away from the process zone to outside the process zone before application of the electric energy, wherein the means for displacing fluid of the body of water comprises an electrically insulating body arranged proximate the electrodes.
- In an embodiment of the device, the means for displacing fluid of the body of water comprise a discharge opening arranged proximate the electrodes for introducing an electrically insulating fluid under pressure in the process zone.
- In an embodiment, the device comprises a container filled with the electrically insulating fluid, which container is in fluid connection with the discharge opening. The electrically insulating fluid may be pressurized with any suitable means, like a pump.
- In an embodiment, the device comprises a shielding member arranged around the process zone for holding the electrically insulating fluid in the process zone.
- In an embodiment, the device comprises measuring means arranged in the process zone for measuring electrical conductivity in the process zone.
- In an embodiment of the device, the electrodes comprise a pair of concentric electrodes. This pair of concentric electrodes is in particular useful when a layer of fluid of the body of water remains on top of the submerged material before application of the electric energy. As described above, it is then possible to create a shockwave in the layer of fluid of the body of water on top of the submerged material. This shockwave then has its crushing effect on the submerged material.
- The invention further relates to a device comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- The invention further relates to a method comprising one or more of the characterising features described in the description and/or shown in the attached drawings.
- The various aspects discussed in this patent can be combined in order to provide additional advantages.
- The invention will be further elucidated referring to embodiments shown in the schematic drawings wherein shown in:
-
Fig. 1 in side view electrodes in a process zone while executing a prior art method; -
fig. 2 in side view electrodes in a process zone while executing a method according to the invention; -
fig. 3 in side view a device according to the invention for processing submerged material at the bottom of the sea by application of electric energy; and -
fig. 4 in side view a further embodiment of a device according to the invention. -
Fig. 1 shows inside view electrodes 1 in a process zone while executing a prior art method. The process zone is filled withsea water 4. Because of the electrical conductivity of seawater, adischarge 12 between theelectrodes 1 will take a path through the seawater and will therefore not have a desired effect of crushing the submergedmaterial 6. -
Fig. 2 shows inside view electrodes 1 in aprocess zone 2 while executing a method according to the invention. Theelectrodes 1 are arranged proximate thematerial 6 at the bottom of the body ofwater 4. Here, theelectrodes 1 do not contact thematerial 6. The submergedmaterial 6 at the bottom of the sea, is processed by application of electric energy, shown as aspark 12.Seawater 3 is displaced (seefig. 3 and4 ), that is removed, from theprocess zone 2 away from theprocess zone 2 to outside theprocess zone 2 before application of the electric energy. As a result, the electric energy is more effective in terms of crushed material at the bottom of the sea. Usually, thematerial 6 at the bottom of the sea comprises rock. -
Fig. 3 shows in side view a device according to the invention for processing submergedmaterial 6 at the bottom of the sea by application of electric energy. The fluid of the body ofwater 4 is displaced away from theprocess zone 2 through introducing an electrically insulatingbody 5 in theprocess zone 2. The electrically insulating body is an example of a means for displacing fluid of the body ofwater 4 away from theprocess zone 2 to outside the process zone before application of the electric energy. The electrically insulatingbody 5 is arranged proximate theelectrodes 1. Here, the electrically insulatingbody 5 extends between theelectrodes 1. In this case, the electrically insulatingbody 5 contacts thematerial 6 at the bottom of the sea. - In dashed line, the electrically insulating
body 5 is shown in a position wherein the fluid of the body of water is partly displaced away from the process zone to outside the process zone. In this position of the electrically insulatingbody 5, a layer of fluid of the body of water remains on top of the submerged material before application of the electric energy. This way, it is possible to create a shockwave in the layer of fluid of the body of water on top of the submerged material. This shockwave then has its effect on the submerged material. In this embodiment the electric energy is applied to the submerged material indirectly through the layer of fluid. -
Fig. 4 shows in side view a further embodiment of a device according to the invention. The device is provided with a nozzle 8 as a means for displacing fluid of the body ofwater 4 away from theprocess zone 2 to outside theprocess zone 2 before application of the electric energy. The nozzle 8 is arranged proximate theelectrodes 1. The nozzle introduces an electrically insulatingfluid 7 under pressure in theprocess zone 2. The electrically insulatingfluid 7 displaces fluid of the body ofwater 4 away from theprocess zone 2 to outside theprocess zone 2. The electrically insulating fluid under pressure has a low electrical conductivity, in particular below 500 mS/m, more particular below 50 mS/m. - In this case, the electrically insulating fluid is produced on site. To store the insulating
fluid 7, the device comprises acontainer 9 filled with the electrically insulatingfluid 7. Thecontainer 9 is in fluid connection with the nozzle 8. The insulatingfluid 7 is pressurized by any suitable means. - As an option, the device has a shielding
member 10 for holding the electrically insulatingfluid 7 in theprocess zone 2. The shieldingmember 10 is arranged around theprocess zone 2 for holding the electrically insulatingfluid 7 in theprocess zone 2. - As a further option, the device comprises a measuring means 11 for measuring electrical conductivity in the
process zone 2. The measuring means 11 is arranged in theprocess zone 2. - In dashed line, the possibility is shown that the fluid of the body of water is partly displaced away from the process zone to outside the process zone such that a layer of fluid of the body of water remains on top of the submerged material before application of the electric energy. This way, it is possible to create a shockwave in the layer of fluid of the body of water on top of the submerged material. This shockwave then has its effect on the submerged
material 6. In this embodiment the electric energy is applied to the submergedmaterial 6 indirectly through the layer of fluid. - The scope of protection of the current invention is solely defined by the appended claims.
Claims (13)
- Method for processing submerged material (6) at the bottom of a body of water (4), like the bottom of the sea, by application of electric energy (12), wherein the method comprises providing electrodes (1) for application of the electric energy (12) in a process zone (2) proximate the material for crushing the material, and displacing of fluid of the body of water (4) away from the process zone to outside the process zone before application of the electric energy, wherein the displacing of fluid of the body of water (4) away from the process zone comprises introducing an electrically insulating body (5) in the process zone.
- Method according to claim 1 , wherein the displacing of fluid of the body of water (4) away from the process zone comprises introducing an electrically insulating fluid (7) under pressure in the process zone.
- Method according to claim 2, wherein the electrically insulating fluid under pressure has a low electrical conductivity, in particular below 500 mS/m, more particular below 50 mS/m.
- Method according to claim 2 or 3, comprising on site producing the electrically insulating fluid.
- Method according to a preceding claim, wherein the submerged material comprises rock.
- Method according to a preceding claim, wherein fluid of the body of water (4) is partly displaced away from the process zone to outside the process zone such that a layer of fluid of the body of water remains on top of the submerged material before application of the electric energy.
- Method according to a preceding claim 1-5, wherein substantially all fluid of the body of water (4) is displaced away from the process zone to outside the process zone such that the application of the electric energy_causes_providing an electric current through the material.
- Device for processing submerged material (6) at the bottom of a body of water (4), like the bottom of the sea, by application of electric energy (12), wherein the device comprises electrodes (1) configured to be arranged in a process zone (2) proximate the material for providing an electric current through the material, and means (5, 7) for displacing fluid of the body of water (4) away from the process zone to outside the process zone before application of the electric energy, wherein the means for displacing fluid of the body of water (4) comprises an electrically insulating body (5) arranged proximate the electrodes.
- Device according to claim 8, where the means (5, 7) for displacing fluid of the body of water (4) comprise a discharge opening (8) arranged proximate the electrodes for introducing an electrically insulating fluid (7) under pressure in the process zone, and wherein the device preferably comprises a container (9) filled with the electrically insulating fluid (7), which container is in fluid connection with the discharge opening.
- Device according to claim 9, wherein the electrically insulating fluid (7) has a low electrical conductivity, in particular below 500 mS/m, more particular below 50 mS/m.
- Device according to a preceding claim 8-10, comprising a shielding member (10) arranged around the process zone for holding the electrically insulating fluid in the process zone.
- Device according to a preceding claim 8-11, comprising measuring means (11) arranged in the process zone for measuring electrical conductivity in the process zone.
- Device according to a preceding claim 8-12, wherein the electrodes comprise a pair of concentric electrodes.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL2014022A NL2014022B1 (en) | 2014-12-19 | 2014-12-19 | Device and method for crushing rock by means of pulsed electric energy. |
PCT/NL2015/050879 WO2016099271A1 (en) | 2014-12-19 | 2015-12-18 | Device and method for crushing rock by means of pulsed electric energy |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3234297A1 EP3234297A1 (en) | 2017-10-25 |
EP3234297B1 true EP3234297B1 (en) | 2020-01-15 |
Family
ID=52472528
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15832913.6A Active EP3234297B1 (en) | 2014-12-19 | 2015-12-18 | Device and method for crushing rock by means of pulsed electric energy |
Country Status (7)
Country | Link |
---|---|
US (1) | US20170370155A1 (en) |
EP (1) | EP3234297B1 (en) |
CN (1) | CN107250480B (en) |
CA (1) | CA2971401A1 (en) |
NL (1) | NL2014022B1 (en) |
WO (1) | WO2016099271A1 (en) |
ZA (1) | ZA201704552B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110344827B (en) * | 2019-06-13 | 2021-01-15 | 太原理工大学 | Method and device for exploiting thick hard roof strong mine pressure by plasma weakening underlying coal seam |
CN110485940B (en) * | 2019-09-30 | 2023-06-13 | 中国铁建重工集团股份有限公司 | Rock drilling trolley |
CN111075450B (en) * | 2020-01-10 | 2020-12-01 | 中南大学 | Deep sea mining method |
CN111396049B (en) * | 2020-03-23 | 2021-05-07 | 中国矿业大学(北京) | Safe and environment-friendly rock blasting device and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH10227193A (en) * | 1997-02-18 | 1998-08-25 | Komatsu Ltd | Electric crushing method |
JPH11236793A (en) * | 1998-02-20 | 1999-08-31 | Komatsu Ltd | Electric crushing method and device |
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CA1207376A (en) * | 1982-05-21 | 1986-07-08 | Uri Andres | Method and apparatus for crushing materials such as minerals |
RU2081259C1 (en) * | 1995-02-22 | 1997-06-10 | Научно-исследовательский институт высоких напряжений при Томском политехническом университете | Method for making pieces of substandard reinforced concrete |
RU2083824C1 (en) * | 1995-06-13 | 1997-07-10 | Научно-исследовательский институт высоких напряжений при Томском политехническом университете | Rock crushing method |
JPH1088957A (en) * | 1996-09-13 | 1998-04-07 | Komatsu Ltd | Crushing device and method |
ZA9810159B (en) * | 1997-11-06 | 1999-05-07 | Boskalis Bv Baggermaatschappij | Method and device for crushing rock manipulator to be used in such a device assembly of a housing and a wire conductor placed therein and assembly of a housing and a means placed therein |
JP3357844B2 (en) * | 1998-09-04 | 2002-12-16 | ニチアス株式会社 | Fire and smoke shutters |
JP2000080886A (en) * | 1998-09-04 | 2000-03-21 | Komatsu Ltd | Electric crushing method and device |
JP2004514054A (en) * | 2000-11-10 | 2004-05-13 | アピト コープ.エス.アー. | Air plasma method and apparatus for treating sheet conductive material |
GB0207530D0 (en) * | 2002-04-02 | 2002-05-08 | Univ Nottingham | High field strength microwave production and microwave processing of materials e.g. weakening of multi-phase materials |
AU2005277008B2 (en) * | 2004-08-20 | 2011-10-06 | Sdg Llc | Pulsed electric rock drilling, fracturing, and crushing methods and apparatus |
RU2385417C2 (en) * | 2008-05-08 | 2010-03-27 | Дмитрий Рудольфович Ганин | Electrohydraulic breaking and crushing method for solid materials |
-
2014
- 2014-12-19 NL NL2014022A patent/NL2014022B1/en not_active IP Right Cessation
-
2015
- 2015-12-18 WO PCT/NL2015/050879 patent/WO2016099271A1/en active Application Filing
- 2015-12-18 US US15/535,416 patent/US20170370155A1/en not_active Abandoned
- 2015-12-18 CA CA2971401A patent/CA2971401A1/en active Pending
- 2015-12-18 CN CN201580076516.7A patent/CN107250480B/en not_active Expired - Fee Related
- 2015-12-18 EP EP15832913.6A patent/EP3234297B1/en active Active
-
2017
- 2017-07-05 ZA ZA201704552A patent/ZA201704552B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10227193A (en) * | 1997-02-18 | 1998-08-25 | Komatsu Ltd | Electric crushing method |
JPH11236793A (en) * | 1998-02-20 | 1999-08-31 | Komatsu Ltd | Electric crushing method and device |
Non-Patent Citations (2)
Title |
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DATABASE WPI Week 199844, Derwent World Patents Index; AN 1998-515519 * |
DATABASE WPI Week 199946, Derwent World Patents Index; AN 1999-545285 * |
Also Published As
Publication number | Publication date |
---|---|
CN107250480A (en) | 2017-10-13 |
WO2016099271A1 (en) | 2016-06-23 |
EP3234297A1 (en) | 2017-10-25 |
ZA201704552B (en) | 2019-11-27 |
NL2014022B1 (en) | 2016-10-12 |
US20170370155A1 (en) | 2017-12-28 |
CA2971401A1 (en) | 2016-06-23 |
CN107250480B (en) | 2020-07-07 |
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