[특허]Virtual electrode mineral particle disintegrator

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B02C-019/18
출원번호	US-0159813 (2011-06-14)
등록번호	US-8789772 (2014-07-29)
발명자 / 주소	Moeny, William M.
출원인 / 주소	SDG, LLC
대리인 / 주소	Peacock, Deborah A.
인용정보	피인용 횟수 : 3 인용 특허 : 52

초록 ▼

The present invention provides for a method and apparatus for breaking mineral particles comprising suspending the particles in a liquid flowing in a conduction path, the liquid comprising a dielectric constant higher than the particles and wherein an electric voltage pulse is sent to electrodes to

The present invention provides for a method and apparatus for breaking mineral particles comprising suspending the particles in a liquid flowing in a conduction path, the liquid comprising a dielectric constant higher than the particles and wherein an electric voltage pulse is sent to electrodes to pass an electric field in the mineral particles with sufficient stress to fracture the mineral particles.

대표청구항 ▼

1. A method for electrocrushing micro-encapsulated gold particles comprising: suspending the micro-encapsulated gold particles in a fluid flow;disposing a plurality of electrodes in the fluid;tuning the characteristics of the fluid flow and the electrodes to optimize disintegration of the micro-enca

1. A method for electrocrushing micro-encapsulated gold particles comprising: suspending the micro-encapsulated gold particles in a fluid flow;disposing a plurality of electrodes in the fluid;tuning the characteristics of the fluid flow and the electrodes to optimize disintegration of the micro-encapsulated gold particles;sending an electric pulse to the electrodes to provide a voltage sufficient to create an electric field internal to the micro-encapsulated gold particles that exceeds the dielectric strength of the micro-encapsulated gold particles without exceeding the dielectric strength of the fluid; andelectrocrushing the micro-encapsulated gold particles. 2. The method of claim 1 further comprising shaping the electrodes to provide a substantially uniform electric field distribution across an electrode gap thus increasing the number of micro-encapsulated gold particles that are electrocrushed with the electric pulse. 3. The method of claim 1 further comprising creating gaps between the electrodes wherein the gaps are larger than the size of the particles. 4. The method of claim 1 wherein a dielectric constant or relative permittivity of the fluid exceeds a dielectric constant or relative permittivity of the micro-encapsulated gold particles, allocating more of the electric field into the micro-encapsulated gold particles than into the fluid. 5. The method of claim 1 further comprising providing a rate of rise of voltage comprising a rate of rise of the electric field in the micro-encapsulated gold particles sufficient to create a mechanical stress in the micro-encapsulated gold particles contributing to a loss of the dielectric strength in the micro-encapsulated gold particles and contributing to comminuting or breaking the micro-encapsulated gold particles. 6. The method of claim 1 further comprising shaping the electrodes to provide a plurality of conduction events over an area greater than that defined by an individual electrode. 7. The method of claim 1 further comprising providing, via the fluid and in the absence of the micro-encapsulated gold particles, an insulation in an amount preventing voltage breakdown or conduction in the fluid between the electrodes preventing an electrohydraulic pulse from occurring in the fluid in the absence of the micro-encapsulated gold particles. 8. The method of claim 1 further comprising extracting the gold from the mineral content that micro-encapsulated the gold. 9. The method of claim 8 wherein extracting comprises treating a slurry of the electrocrushed micro-encapsulated gold particles with chemicals to separate the gold from the mineral content. 10. The method of claim 1 wherein the fluid flow comprises dielectric properties different than dielectric properties of the micro-encapsulated gold particles. 11. The method of claim 10 wherein the difference in dielectric properties providing for an enhancement of the electric field in the micro-encapsulated gold particles compared to the fluid. 12. The method of claim 1 wherein the resulting loss of dielectric strength of the micro-encapsulated gold particles causes the micro-encapsulated gold particles to conduct, thereby removing their contribution to a net insulation between the electrodes. 13. The method of claim 12 wherein the loss of contribution of insulation between the electrodes from the micro-encapsulated gold particles causes electric fields in the fluid to exceed the dielectric strength of the fluid, thus causing the fluid and micro-encapsulated gold particles to conduct current directly through the micro-encapsulated gold particles. 14. The method of claim 1 further comprising incorporating into the fluid chemicals suitable for dissolving the gold, thereby facilitating recovery of the gold and discarding the waste minerals. 15. A method for comminuting or breaking micro-encapsulated gold particles comprising: suspending the micro-encapsulated gold particles in a fluid flowing in a fluid flow;disposing a plurality of electrodes in the fluid;sending an electric voltage pulse to the electrodes; andpassing sufficient current through the micro-encapsulated gold particles and the fluid to comminute or break the micro-encapsulated gold particles, the current being of a power below that which causes a shock wave in the fluid. 16. The method of claim 15 wherein gaps between the electrodes are larger than the size of the micro-encapsulated gold particles. 17. The method of claim 15 wherein a dielectric constant or relative permittivity of the fluid exceeds a dielectric constant or relative permittivity of the micro-encapsulated gold particles. 18. The method of claim 15 wherein the fluid comprises electric properties different than electric properties of the micro-encapsulated gold particles. 19. The method of claim 15 further comprising extracting the gold from the mineral content that micro-encapsulated the gold. 20. The method of claim 19 wherein extracting comprises treating a slurry of the electrocrushed micro-encapsulated gold particles with chemicals to separate the gold from the mineral content. 21. The method of claim 15 further comprising shaping the electrodes to provide a substantially uniform electric field distribution across an electrode gap and thus increasing the number of micro-encapsulated gold particles that are electrocrushed with the electric voltage pulse. 22. The method of claim 15 further comprising incorporating into the fluid chemicals suitable for dissolving the gold, thereby facilitating recovery of the gold and discarding waste minerals.

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