US3322275A - High tension separation of materials - Google Patents

High tension separation of materials Download PDF

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Publication number
US3322275A
US3322275A US381772A US38177264A US3322275A US 3322275 A US3322275 A US 3322275A US 381772 A US381772 A US 381772A US 38177264 A US38177264 A US 38177264A US 3322275 A US3322275 A US 3322275A
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US
United States
Prior art keywords
particles
rotor
high tension
pinned
electrode
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.)
Expired - Lifetime
Application number
US381772A
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English (en)
Inventor
Robert L Breakiron
William P Dyrenforth
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carpco Research and Engineering Inc
Original Assignee
Carpco Research and Engineering Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Carpco Research and Engineering Inc filed Critical Carpco Research and Engineering Inc
Priority to US381772A priority Critical patent/US3322275A/en
Priority to GB42713/64A priority patent/GB1036604A/en
Priority to FR996932A priority patent/FR1418445A/fr
Priority to SE5656/65A priority patent/SE311129B/xx
Priority to DEC35788A priority patent/DE1274532B/de
Application granted granted Critical
Publication of US3322275A publication Critical patent/US3322275A/en
Priority to MY196912A priority patent/MY6900012A/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C7/00—Separating solids from solids by electrostatic effect
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C7/00—Separating solids from solids by electrostatic effect
    • B03C7/02—Separators
    • B03C7/06—Separators with cylindrical material carriers

Definitions

  • An additional object of this invention is to provide a method for beneficiation of ores wherein the particulate ore containing a substantial quantity of dust-like fines successively is subjected to a mobile ion discharge and an external electrical field, both of which are pulsating at a high frequency.
  • the corona discharge be unidirectional although it is not essential to obtaining the benefits of the invention that a unidirectional corona discharge be employed.
  • FIGURE 3 is a schematic perspective view of the separator of the invention.
  • the ore With dust-like particles it is preferable to feed the ore at a point forward of the vertical center of the rotor. This prevents overflow material from building up and sliding down the back of the roller and also prevents particles from receiving the pinning charge while still above the rotor surface.
  • the letter B represents the circumferential distance from the vertical center FF of the rotor to the point where the hopper 12 terminates. Under the conditions specified in the preceding paragraph, the distance E should be about 1% inches.
  • corona voltage is between about 10 and about 100 kv. and the corona current is between about 0.1 milliampere and about 5 milliamperes per foot width of grounded conductive surface.
  • a method for effecting the separation of a particulate mixture containing particles of varying conductivity a substantial quantity of which are of a mesh size of -200 which comprises feeding such mixture to the surface of a rotatable grounded conductive roll, passing the mixture while in contact with the roll through a spray of mobile ions produced by a corona discharge pulsed at a rate between about 150 and 800 pulses per second, passing the particles not pinned to the roll by the mobile ions through an external electrical field, collecting in at least one fraction the particles not pinned to the roll and passed through the external electric field, and separately collecting the particles pinned to the roll by the mobile ions.
  • An apparatus for separating particulate mixtures containing particles of varying conductivity a substantial quantity of which are of a mesh size of 200 which comprises a grounded conductive surface for conveying the mixture into a high tension charging zone, a high tension charging zone defined by the grounded conductive surface and a charging means positioned in spaced relationship thereto for emitting a pulsed corona discharge into contact with the particles disposed on said surface at a pulse rate of between about 150 and about 800 pulses per second, external electric field generating means disposed outside the high tension charging zone and in the direction of material flow through the apparatus for subjecting at least part of the particulate mixture to the action of an external electric field, and collection means for separately collecting the particles pinned to the grounded conductive surface by the corona discharge and the particles discharged from said surface through said external electric field.

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  • Disintegrating Or Milling (AREA)
  • Electrostatic Separation (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US381772A 1964-07-10 1964-07-10 High tension separation of materials Expired - Lifetime US3322275A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US381772A US3322275A (en) 1964-07-10 1964-07-10 High tension separation of materials
GB42713/64A GB1036604A (en) 1964-07-10 1964-10-20 High tension separation of materials
FR996932A FR1418445A (fr) 1964-07-10 1964-12-01 Procédé et appareil de séparation des matières par haute tension
SE5656/65A SE311129B (de) 1964-07-10 1965-04-29
DEC35788A DE1274532B (de) 1964-07-10 1965-05-07 Verfahren zur elektrostatischen Trennung eines Gemisches von Teilchen unterschiedlicher Leitfaehigkeit mittels Koronaentladung
MY196912A MY6900012A (en) 1964-07-10 1969-12-31 High tension separation of material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US381772A US3322275A (en) 1964-07-10 1964-07-10 High tension separation of materials

Publications (1)

Publication Number Publication Date
US3322275A true US3322275A (en) 1967-05-30

Family

ID=23506300

Family Applications (1)

Application Number Title Priority Date Filing Date
US381772A Expired - Lifetime US3322275A (en) 1964-07-10 1964-07-10 High tension separation of materials

Country Status (5)

Country Link
US (1) US3322275A (de)
DE (1) DE1274532B (de)
GB (1) GB1036604A (de)
MY (1) MY6900012A (de)
SE (1) SE311129B (de)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799340A (en) * 1970-12-02 1974-03-26 Fuji Photo Film Co Ltd Refining photoconductive particle
US3941684A (en) * 1974-03-11 1976-03-02 Leesona Corporation Scrap salvage system
US3970546A (en) * 1974-06-04 1976-07-20 Carpco, Inc. Method and apparatus for separating non-ferrous metal from waste material
US4116822A (en) * 1974-06-04 1978-09-26 Carpco, Inc. Method of selectively separating glass from waste material
US4247390A (en) * 1978-10-23 1981-01-27 Knoll Frank S Method of separating vermiculite from the associated gangue
US4251353A (en) * 1978-11-13 1981-02-17 Knoll Frank S Method of treating refuse to separate valuable constituents
US4326951A (en) * 1980-03-17 1982-04-27 Broz Frank J Electrostatic mineral concentrator
US4943368A (en) * 1988-11-15 1990-07-24 Pittsburgh Mineral & Environmental Technology, Inc. Nonmetallic abrasive blasting material recovery process including an electrostatic separation step
US4954248A (en) * 1987-04-21 1990-09-04 Urvantsev Anatoly I Electrical drum-type separator
US5098558A (en) * 1989-12-27 1992-03-24 Carpco, Inc. Adjustable feed accelerator for particle separator
US5397066A (en) * 1993-01-22 1995-03-14 Mobil Oil Corporation Separation of plastic materials
US5704490A (en) * 1994-06-17 1998-01-06 British-American Tobacco Company Limited Electrostatic separation of particulate material
WO2000061292A1 (en) * 1999-04-14 2000-10-19 Exportech Company, Inc. A method and apparatus for sorting particles with electric and magnetic forces
US6225587B1 (en) * 1997-06-27 2001-05-01 E. Cordell Lundahl Electrostatic separation of chaff from grain
US20020189977A1 (en) * 2000-10-24 2002-12-19 Hidehiko Maehata Composite separator
US20030192814A1 (en) * 2002-04-10 2003-10-16 Outokumpu Oyj Corona and static electrode assembly
US20050061713A1 (en) * 2000-07-27 2005-03-24 Gates Peter J. Apparatus for the electrostatic separation of particulate mixtures
US20060213760A1 (en) * 2003-06-10 2006-09-28 Dongping Tao Electrostatic particle charger, electrostatic separation system, and related methods
US20080000811A1 (en) * 2004-04-07 2008-01-03 Selvey Bruce A Mineral Separation Plant Device
US20090194464A1 (en) * 2008-02-01 2009-08-06 Eriez Manufacturing High-Tension Electrostatic Separator Lifting Electrode
US20160016179A1 (en) * 2012-02-20 2016-01-21 Dg Press Holding B.V. Powder Purging Apparatus and Method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI833909A (fi) * 1982-11-04 1984-05-05 Beloit Corp Elektrodynamisk separator
HU191615B (en) * 1983-12-01 1987-03-30 Bacsalmasi Aag Method for separating granular material masses in components
JP4008331B2 (ja) * 2002-04-17 2007-11-14 高橋 謙三 被覆銅線処理方法
JP4472294B2 (ja) 2003-08-22 2010-06-02 株式会社サトー 睡眠時無呼吸症候群診断装置、並びに、信号解析装置及びその方法
CN113638080B (zh) * 2021-07-14 2024-02-13 石河子大学 静电式籽棉异纤清除模块化装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US805694A (en) * 1904-08-02 1905-11-28 Charles Henry Huff Method of electrostatic separation.
US813063A (en) * 1903-04-18 1906-02-20 Henry M Sutton Process of separating substances of different dielectric capacities.
US3031079A (en) * 1959-06-24 1962-04-24 Quaker Oats Co Electrostatic separation
CA681171A (en) * 1964-03-03 E. Barthelemy Roger Concentration of iron ore

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE897682C (de) * 1951-09-30 1953-11-23 Metallgesellschaft Ag Vorrichtung zum elektrostatischen Trennen von Gemengen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA681171A (en) * 1964-03-03 E. Barthelemy Roger Concentration of iron ore
US813063A (en) * 1903-04-18 1906-02-20 Henry M Sutton Process of separating substances of different dielectric capacities.
US805694A (en) * 1904-08-02 1905-11-28 Charles Henry Huff Method of electrostatic separation.
US3031079A (en) * 1959-06-24 1962-04-24 Quaker Oats Co Electrostatic separation

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3799340A (en) * 1970-12-02 1974-03-26 Fuji Photo Film Co Ltd Refining photoconductive particle
US3941684A (en) * 1974-03-11 1976-03-02 Leesona Corporation Scrap salvage system
US3970546A (en) * 1974-06-04 1976-07-20 Carpco, Inc. Method and apparatus for separating non-ferrous metal from waste material
US4116822A (en) * 1974-06-04 1978-09-26 Carpco, Inc. Method of selectively separating glass from waste material
US4247390A (en) * 1978-10-23 1981-01-27 Knoll Frank S Method of separating vermiculite from the associated gangue
US4251353A (en) * 1978-11-13 1981-02-17 Knoll Frank S Method of treating refuse to separate valuable constituents
US4326951A (en) * 1980-03-17 1982-04-27 Broz Frank J Electrostatic mineral concentrator
US4954248A (en) * 1987-04-21 1990-09-04 Urvantsev Anatoly I Electrical drum-type separator
US4943368A (en) * 1988-11-15 1990-07-24 Pittsburgh Mineral & Environmental Technology, Inc. Nonmetallic abrasive blasting material recovery process including an electrostatic separation step
US5098558A (en) * 1989-12-27 1992-03-24 Carpco, Inc. Adjustable feed accelerator for particle separator
US5397066A (en) * 1993-01-22 1995-03-14 Mobil Oil Corporation Separation of plastic materials
US5704490A (en) * 1994-06-17 1998-01-06 British-American Tobacco Company Limited Electrostatic separation of particulate material
US6225587B1 (en) * 1997-06-27 2001-05-01 E. Cordell Lundahl Electrostatic separation of chaff from grain
WO2000061292A1 (en) * 1999-04-14 2000-10-19 Exportech Company, Inc. A method and apparatus for sorting particles with electric and magnetic forces
US6540088B2 (en) * 1999-04-14 2003-04-01 Exportech Company, Inc. Method and apparatus for sorting particles with electric and magnetic forces
US7041925B2 (en) * 2000-07-27 2006-05-09 Ore Kinetics Investments Pty., Ltd. Apparatus for the electrostatic separation of particulate mixtures
US20050061713A1 (en) * 2000-07-27 2005-03-24 Gates Peter J. Apparatus for the electrostatic separation of particulate mixtures
US6774332B2 (en) * 2000-10-24 2004-08-10 Hitachi Zosen Corporation Composite separator
US20020189977A1 (en) * 2000-10-24 2002-12-19 Hidehiko Maehata Composite separator
US20030192814A1 (en) * 2002-04-10 2003-10-16 Outokumpu Oyj Corona and static electrode assembly
US6797908B2 (en) 2002-04-10 2004-09-28 Outokumpu Oyj High-tension electrostatic classifier and separator, and associated method
US6951992B2 (en) * 2002-04-10 2005-10-04 Outokumpu Oyj Corona and static electrode assembly
US20060213760A1 (en) * 2003-06-10 2006-09-28 Dongping Tao Electrostatic particle charger, electrostatic separation system, and related methods
US8338734B2 (en) 2003-06-10 2012-12-25 Dongping Tao Electrostatic particle charger, electrostatic separation system, and related methods
US20080000811A1 (en) * 2004-04-07 2008-01-03 Selvey Bruce A Mineral Separation Plant Device
US20090194464A1 (en) * 2008-02-01 2009-08-06 Eriez Manufacturing High-Tension Electrostatic Separator Lifting Electrode
US7973258B2 (en) 2008-02-01 2011-07-05 Eriez Manufacturing Co. High-tension electrostatic separator lifting electrode
US20160016179A1 (en) * 2012-02-20 2016-01-21 Dg Press Holding B.V. Powder Purging Apparatus and Method
US9539583B2 (en) * 2012-02-20 2017-01-10 Dg Press Holding B.V. Powder purging apparatus and method

Also Published As

Publication number Publication date
SE311129B (de) 1969-06-02
GB1036604A (en) 1966-07-20
DE1274532B (de) 1968-08-08
MY6900012A (en) 1969-12-31

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