WO2009108047A4 - Method and apparatus for the separation of solid particles having different densities - Google Patents

Method and apparatus for the separation of solid particles having different densities Download PDF

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Publication number
WO2009108047A4
WO2009108047A4 PCT/NL2009/050016 NL2009050016W WO2009108047A4 WO 2009108047 A4 WO2009108047 A4 WO 2009108047A4 NL 2009050016 W NL2009050016 W NL 2009050016W WO 2009108047 A4 WO2009108047 A4 WO 2009108047A4
Authority
WO
WIPO (PCT)
Prior art keywords
particles
process fluid
laminar
separated
stream
Prior art date
Application number
PCT/NL2009/050016
Other languages
French (fr)
Other versions
WO2009108047A1 (en
Inventor
Peter Carlo Rem
Simon Peter Maria Berkhout
Original Assignee
Technische Universiteit Delft
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39882911&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2009108047(A4) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Technische Universiteit Delft filed Critical Technische Universiteit Delft
Priority to PL09714410T priority Critical patent/PL2247386T3/en
Priority to DK09714410.9T priority patent/DK2247386T3/en
Priority to ES09714410T priority patent/ES2389287T3/en
Priority to EP09714410A priority patent/EP2247386B1/en
Publication of WO2009108047A1 publication Critical patent/WO2009108047A1/en
Publication of WO2009108047A4 publication Critical patent/WO2009108047A4/en
Priority to US12/870,099 priority patent/US8418855B2/en

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
    • B03C1/00—Magnetic separation
    • B03C1/005—Pretreatment specially adapted for magnetic separation
    • B03C1/01—Pretreatment specially adapted for magnetic separation by addition of magnetic adjuvants
    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • 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
    • B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
    • B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
    • B03B5/28—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation
    • B03B5/30—Washing granular, powdered or lumpy materials; Wet separating by sink-float separation using heavy liquids or suspensions
    • B03B5/44—Application of particular media therefor
    • 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
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/025—High gradient magnetic separators
    • B03C1/031—Component parts; Auxiliary operations
    • B03C1/033—Component parts; Auxiliary operations characterised by the magnetic circuit
    • B03C1/0335—Component parts; Auxiliary operations characterised by the magnetic circuit using coils
    • 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
    • B03C1/00—Magnetic separation
    • B03C1/02—Magnetic separation acting directly on the substance being separated
    • B03C1/28—Magnetic plugs and dipsticks
    • B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
    • 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
    • B03C1/00—Magnetic separation
    • B03C1/32—Magnetic separation acting on the medium containing the substance being separated, e.g. magneto-gravimetric-, magnetohydrostatic-, or magnetohydrodynamic separation
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/18—Magnetic separation whereby the particles are suspended in a liquid
    • 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
    • B03C2201/00—Details of magnetic or electrostatic separation
    • B03C2201/20—Magnetic separation whereby the particles to be separated are in solid form

Abstract

The invention relates to a method and apparatus for separating solid particles of different densities, using a magnetic process fluid. The solid particles are thoroughly mixed in a small partial flow of the process fluid. The small turbulent partial flow is added to a large laminar partial flow of the process fluid, after which the obtained mixture of the respective partial process fluids is conducted over, under, or through the middle of two magnetconfigurations, wherein the particles are separated into lighter particles at the top of the laminar process fluid and heavier particles at the bottom of the laminar process fluid, each of which are subsequently removed with the aid of a splitter. After that furthermore the particles of low density and the particles of high density are separated from the respective process streams, dried and stored. Finally, the process fluid from which the particles have been removed is returned to the original starting process stream. The method according to the invention is especially suitable, for example, for separating a mixture of polypropylene particles and polyethylene particles.

Claims

AMENDED CLAIMS received by the International Bureau on 28 August 2009 (28.08.2009)
1. A method for separating solid particles of different densities in a magnetic process fluid, characterised in that the solid particles that differ little in density are separated by first thoroughly mixing the solid particles to be separated in a small partial flow of the process fluid, which small turbulent partial flow is added to a large laminar partial flow of the process fluid, after which the obtained mixture of the respective partial process fluids is conducted over, under, or through the middle of two magnetconfigurations, wherein the particles are separated into lighter particles at the top of the laminar process fluid and heavier particles at the bottom of the laminar process fluid, each of which are subsequently removed with the aid of a splitter wherein furthermore the materials of low density and the materials of high density are separated from the respective process streams.
2. A method according to claim 1, characterised in that prior to mixing in the turbulent fluid stream, the solid particles are subjected to moistening with steam.
3. A method according to claim 1 or 2, characterised in that the turbulent particle stream is introduced at the height of the splitter.
4. A method according to any one of claims 1-3, characterised in that heavy particles settled in the process fluid stream are collected and removed at the bottom in a trough- shaped endless conveyor belt.
5. A method according to any one of claims 1-4, characterised in that a mixture of polypropylene particles having a density of 880-920 kg/m3 and polyethylene particles having a density of 930-960 kg/m3 are separated.
6. A method according to any one of claims 1-5, characterised in that the process fluid consists of a suspension of iron oxide particles .
7. A method according to any one of claims 1-6, characterised in that the smaller partial flow constitutes approxi- mately 10% of the process fluid. 11
8. A method according to any one of claims 1-7, characterised in that as magnet a permanent magnet, electromagnet or a superconducting magnet is used.
9. An apparatus (1) for separating a mixture of materi- als of little density differences in accordance with the method of any one of claims 1-8, characterised in that the apparatus (1) is provided with a mixing vessel (2) for the particles to be separated, which mixing vessel (2) is provided with a stirrer (3) and an outlet for a turbulent partial process stream (4) containing the particles, and laminators (5) and (6) for creating a laminar process stream (8) delimiting the turbulent partial process stream (4), followed by a magnet for magnetizing the laminar process fluid stream (8), and a splitter (10) for removing a process fluid stream containing the lighter particles (11) on the one hand, and the heavier particles (12) on the other hand, whereby there is an equidirectionally rotating endless belt (9) for maintaining the laminar process fluid stream (8), and an equidirectionally moving trough-shaped endless belt (13) for removing the settled heavier particles and for main- taining the laminar process fluid stream (8).
10. An apparatus according to claim 8, characterized in that the mixing vessel (2) tapers.
11. An apparatus according to claim 9 or 10, characterised in that the laminators (5) and (6) are provided at the feed side of the fluid stream.
12. An apparatus according to claim 9-11, characterised in that magnet (7) is a permanent magnet, an electromagnet or a superconducting magnet.
PCT/NL2009/050016 2008-02-27 2009-01-16 Method and apparatus for the separation of solid particles having different densities WO2009108047A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
PL09714410T PL2247386T3 (en) 2008-02-27 2009-01-16 Method and apparatus for the separation of solid particles having different densities
DK09714410.9T DK2247386T3 (en) 2008-02-27 2009-01-16 Method and apparatus for separating solid particles of different density
ES09714410T ES2389287T3 (en) 2008-02-27 2009-01-16 Method and apparatus for the separation of solid particles having different densities
EP09714410A EP2247386B1 (en) 2008-02-27 2009-01-16 Method and apparatus for the separation of solid particles having different densities
US12/870,099 US8418855B2 (en) 2008-02-27 2010-08-27 Method and apparatus for the separation of solid particles having different densities

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2001322A NL2001322C2 (en) 2008-02-27 2008-02-27 Method and device for separating solid particles with a mutual density difference.
NL2001322 2008-02-27

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/870,099 Continuation US8418855B2 (en) 2008-02-27 2010-08-27 Method and apparatus for the separation of solid particles having different densities

Publications (2)

Publication Number Publication Date
WO2009108047A1 WO2009108047A1 (en) 2009-09-03
WO2009108047A4 true WO2009108047A4 (en) 2009-11-19

Family

ID=39882911

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/NL2009/050016 WO2009108047A1 (en) 2008-02-27 2009-01-16 Method and apparatus for the separation of solid particles having different densities
PCT/NL2009/050087 WO2009108053A1 (en) 2008-02-27 2009-02-26 Method and apparatus for separating parts, in particular seeds, having different densities

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/NL2009/050087 WO2009108053A1 (en) 2008-02-27 2009-02-26 Method and apparatus for separating parts, in particular seeds, having different densities

Country Status (9)

Country Link
US (2) US8381913B2 (en)
EP (2) EP2247386B1 (en)
DK (2) DK2247386T3 (en)
ES (2) ES2389287T3 (en)
LT (1) LT2247387T (en)
NL (1) NL2001322C2 (en)
PL (2) PL2247386T3 (en)
PT (1) PT2247386E (en)
WO (2) WO2009108047A1 (en)

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CN108686824B (en) * 2018-05-14 2020-08-04 道真自治县仡山御田生态农业发展有限公司 Seed sorting machine
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Also Published As

Publication number Publication date
EP2247387B1 (en) 2020-09-30
US8418855B2 (en) 2013-04-16
LT2247387T (en) 2021-02-25
WO2009108047A1 (en) 2009-09-03
DK2247386T3 (en) 2012-09-10
WO2009108053A1 (en) 2009-09-03
US8381913B2 (en) 2013-02-26
PT2247386E (en) 2012-09-04
NL2001322C2 (en) 2009-08-31
EP2247386A1 (en) 2010-11-10
EP2247386B1 (en) 2012-06-06
DK2247387T3 (en) 2021-01-04
US20110049017A1 (en) 2011-03-03
US20110042274A1 (en) 2011-02-24
PL2247386T3 (en) 2012-11-30
PL2247387T3 (en) 2021-05-31
ES2389287T3 (en) 2012-10-24
EP2247387A1 (en) 2010-11-10
ES2837824T3 (en) 2021-07-01

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