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GB1349689A - Method and apparatus for separation of particulate material by the application of electric fields - Google Patents

Method and apparatus for separation of particulate material by the application of electric fields

Info

Publication number
GB1349689A
GB1349689A GB1681271A GB1681271A GB1349689A GB 1349689 A GB1349689 A GB 1349689A GB 1681271 A GB1681271 A GB 1681271A GB 1681271 A GB1681271 A GB 1681271A GB 1349689 A GB1349689 A GB 1349689A
Authority
GB
United Kingdom
Prior art keywords
path
separated
particulate material
supplied
electrodes
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
Application number
GB1681271A
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.)
FMC Corp
Original Assignee
FMC Corp
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 FMC Corp filed Critical FMC Corp
Publication of GB1349689A publication Critical patent/GB1349689A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B03C7/023—Non-uniform field separators

Landscapes

  • Electrostatic Separation (AREA)

Abstract

1349689 Electrostatic separators FMC CORP 25 May 1971 [9 July 1970] 16812/71 Heading B2J Fine particulate material moving in a path with a horizontal component is separated by applying an electric field across said path between electrodes spaced above and below said path and extending transversely to said path. As shown, particulate material M such as mixed mineral ores to be separated is fed by a vibratory feeder trough and hopper combination 22 which may be heated into one end of the electrostatic separator 20 through which it is propelled by a vibratory feeder 46. The separator comprises top and bottom electrode plates 42, 40 which have matching electrode grids 60 (62) painted or sprayed on their upper and lower surfaces respectively in a herring- bone pattern. The electrodes are connected to an AC supply with a higher potential being supplied to the central portions 60a, b (62a, b) than to the outer portions 60c, (62c). Particles which are influenced by the electric field tend to move laterally across the plate 40, past deflector members 80 and barrier structures 90 to pass through apertures 97 into a collecting trough 26. Those particles which pass through deflector members 80 but do not reach the barrier structures 90 are guided at 103 into middling containers 28 for re-cycling. Material which is not influenced is discharged by chute 54 onto a conveyor 24. The matching electrode grids on plates. 42, 40 are preferably staggered longitudinally (Fig. 8, not shown). Several electrodes may be stacked on top of each other. Different frequencies in the audio range may be supplied depending on the response characteristics of the material to be separated.. Different frequencies may be supplied to different longitudinal portions of the electrode grid structure to separate different materials sequentially. The electrode plates may be tilted sideways and/or be rifled to assist the separation.
GB1681271A 1970-07-09 1971-05-25 Method and apparatus for separation of particulate material by the application of electric fields Expired GB1349689A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US5351870A 1970-07-09 1970-07-09

Publications (1)

Publication Number Publication Date
GB1349689A true GB1349689A (en) 1974-04-10

Family

ID=21984828

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1681271A Expired GB1349689A (en) 1970-07-09 1971-05-25 Method and apparatus for separation of particulate material by the application of electric fields

Country Status (11)

Country Link
US (1) US3720312A (en)
JP (1) JPS5636985B1 (en)
BE (1) BE769656A (en)
BR (1) BR7102827D0 (en)
CA (1) CA942709A (en)
DE (1) DE2134298C3 (en)
ES (1) ES392591A1 (en)
FR (1) FR2098272B1 (en)
GB (1) GB1349689A (en)
NL (1) NL151914B (en)
ZA (1) ZA714372B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130921A (en) * 1982-11-17 1984-06-13 Blue Circle Ind Plc Electrostatic separation of particulate materials
GB2130922A (en) * 1982-11-17 1984-06-13 Blue Circle Ind Plc Electrostatic separation particulate materials
WO2008140350A1 (en) * 2007-05-15 2008-11-20 Andrey Andreevich Churkin Method for ionization separation of dispersed materials and a device for carrying out said method

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52106310A (en) * 1976-03-05 1977-09-06 Asahi Glass Co Ltd Refining of material containing tio2
US4122002A (en) * 1977-05-09 1978-10-24 Hauskins Jr John B Method and apparatus for electrostatically separating particles from a mixture of particles
JPS57123836A (en) * 1981-01-17 1982-08-02 Nippon Telegr & Teleph Corp <Ntt> Preparation optical fiber having single mode of internal stress and double refraction
US4357234A (en) * 1981-05-18 1982-11-02 Canadian Patents & Development Limited Alternating potential electrostatic separator of particles with different physical properties
NO834171L (en) * 1982-11-17 1984-05-18 Blue Circle Ind Plc PROCEDURE AND APPARATUS FOR SEPARATION OF PARTICLE MATERIAL
US4659457A (en) * 1983-04-04 1987-04-21 Edward Martinez Gravity-magnetic ore separators and methods
US4565624A (en) * 1983-04-04 1986-01-21 Edward Martinez Gravity--magnetic ore separators
US4512879A (en) * 1983-07-20 1985-04-23 Battelle Development Corp. Process for producing a metalliferous concentrate from a particulate feed material
US4935122A (en) * 1986-12-22 1990-06-19 Dreyfuss William C Mineral separator system
US5098558A (en) * 1989-12-27 1992-03-24 Carpco, Inc. Adjustable feed accelerator for particle separator
JPH04115269U (en) * 1991-03-29 1992-10-13 株式会社小松製作所 internal combustion engine radiator
US5909813A (en) * 1997-01-13 1999-06-08 Lift Feeder Inc. Force field separator
US5904253A (en) * 1997-01-15 1999-05-18 Separation Technologies, Inc. Belt separator system having improved belt geometry
MY139225A (en) 1998-02-26 2009-08-28 Anglo Operations Ltd Method and apparatus for separating particles
US6098810A (en) * 1998-06-26 2000-08-08 Pueblo Process, Llc Flotation process for separating silica from feldspar to form a feed material for making glass
US6320148B1 (en) * 1999-08-05 2001-11-20 Roe-Hoan Yoon Electrostatic method of separating particulate materials
US7767924B2 (en) * 2003-09-09 2010-08-03 Korea Institute Of Geoscience And Mineral Resources Electrostatic separation system for removal for fine metal from plastic
US7527675B2 (en) * 2006-09-13 2009-05-05 United Technologies Corporation Electrostatic particulate separation system and device
US8552326B2 (en) 2010-09-03 2013-10-08 Separation Technologies Llc Electrostatic separation control system
US9393573B2 (en) 2014-04-24 2016-07-19 Separation Technologies Llc Continuous belt for belt-type separator devices
US9764332B2 (en) 2015-02-13 2017-09-19 Separation Technologies Llc Edge air nozzles for belt-type separator devices
CN115916387A (en) 2020-06-22 2023-04-04 分离技术有限责任公司 Dry beneficiation process for fine iron and extremely fine iron ores by particle size and electrostatic separation
CN115090563B (en) * 2022-07-11 2024-03-22 合肥美亚光电技术股份有限公司 Color sorter

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1179937A (en) * 1915-02-02 1916-04-18 Jakob Kraus Method of and apparatus for separating and cleaning materials in an electrostatic field.
US1355477A (en) * 1918-11-04 1920-10-12 United Chemical & Organic Prod Means for separating mixtures
US2615570A (en) * 1949-08-12 1952-10-28 Gen Mills Inc Middlings purifier
US2699869A (en) * 1952-04-18 1955-01-18 Gen Mills Inc Electrostatic separator
US2848108A (en) * 1956-12-31 1958-08-19 Gen Mills Inc Method and apparatus for electrostatic separation
US3249225A (en) * 1962-02-09 1966-05-03 Litton Systems Inc Electrostatic separation means
US3291302A (en) * 1963-10-28 1966-12-13 Gen Mills Inc Conveying and separating appartus and process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2130921A (en) * 1982-11-17 1984-06-13 Blue Circle Ind Plc Electrostatic separation of particulate materials
GB2130922A (en) * 1982-11-17 1984-06-13 Blue Circle Ind Plc Electrostatic separation particulate materials
WO2008140350A1 (en) * 2007-05-15 2008-11-20 Andrey Andreevich Churkin Method for ionization separation of dispersed materials and a device for carrying out said method

Also Published As

Publication number Publication date
BE769656A (en) 1971-11-16
FR2098272A1 (en) 1972-03-10
JPS5636985B1 (en) 1981-08-27
DE2134298B2 (en) 1974-01-31
NL151914B (en) 1977-01-17
ES392591A1 (en) 1975-04-01
CA942709A (en) 1974-02-26
DE2134298C3 (en) 1974-08-22
US3720312A (en) 1973-03-13
DE2134298A1 (en) 1972-01-13
NL7107115A (en) 1972-01-11
BR7102827D0 (en) 1973-04-17
ZA714372B (en) 1972-04-26
FR2098272B1 (en) 1976-03-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee