FR2411635A1 - Sorting substances of different hardnesses - by encrusting softer substance with magnetic particles and subjecting product to magnetic field - Google Patents

Sorting substances of different hardnesses - by encrusting softer substance with magnetic particles and subjecting product to magnetic field

Info

Publication number
FR2411635A1
FR2411635A1 FR7738532A FR7738532A FR2411635A1 FR 2411635 A1 FR2411635 A1 FR 2411635A1 FR 7738532 A FR7738532 A FR 7738532A FR 7738532 A FR7738532 A FR 7738532A FR 2411635 A1 FR2411635 A1 FR 2411635A1
Authority
FR
France
Prior art keywords
substances
encrusting
magnetic particles
magnetic field
sorting
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.)
Granted
Application number
FR7738532A
Other languages
French (fr)
Other versions
FR2411635B1 (en
Inventor
Francois Herbulot
Robert Emery
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.)
AFFIMET
Original Assignee
AFFIMET
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 AFFIMET filed Critical AFFIMET
Priority to FR7738532A priority Critical patent/FR2411635A1/en
Publication of FR2411635A1 publication Critical patent/FR2411635A1/en
Application granted granted Critical
Publication of FR2411635B1 publication Critical patent/FR2411635B1/fr
Granted 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
    • 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
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness

Abstract

A process for sorting substances of different surface hardness consists of adding magnetic particles to the substances treating the whole so as to encrust the less hard substance with a part of the magnetic particles, eliminating the particles which have not entrusted and subjecting the product to the action of a magnetic field. The encrusting is pref. carried out in a fragmentation appts. of the group operating by compression, percussion, shearing, chopping, cutting. It may be carried out at a temp. above ambient to modify the superficial hardness. The process can be used in all cases where economical sorting of natural or artificial substances, metallic or non-metallic, is required. Mixtures of copper, lead or aluminium, lead resulting from the granulation of recovered electric cables are easily treated. It is most useful when only the hardest substance is to be isolated because that is not encrusted and does not have to be further treated.
FR7738532A 1977-12-14 1977-12-14 Sorting substances of different hardnesses - by encrusting softer substance with magnetic particles and subjecting product to magnetic field Granted FR2411635A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7738532A FR2411635A1 (en) 1977-12-14 1977-12-14 Sorting substances of different hardnesses - by encrusting softer substance with magnetic particles and subjecting product to magnetic field

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7738532A FR2411635A1 (en) 1977-12-14 1977-12-14 Sorting substances of different hardnesses - by encrusting softer substance with magnetic particles and subjecting product to magnetic field

Publications (2)

Publication Number Publication Date
FR2411635A1 true FR2411635A1 (en) 1979-07-13
FR2411635B1 FR2411635B1 (en) 1982-04-09

Family

ID=9199096

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7738532A Granted FR2411635A1 (en) 1977-12-14 1977-12-14 Sorting substances of different hardnesses - by encrusting softer substance with magnetic particles and subjecting product to magnetic field

Country Status (1)

Country Link
FR (1) FR2411635A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810368A (en) * 1985-04-10 1989-03-07 Electro Minerals (Canada) Inc. Automatic method for separating and cleaning silicon carbide furnace materials
WO1996012562A1 (en) * 1994-10-22 1996-05-02 Heckett Multiserv Plc Treatment of waste material
FR2827197A1 (en) * 2001-07-11 2003-01-17 Aldo Urtiti Artificial magnetization of non-magnetic products, especially aluminum cans, by coating of aluminum can with paint containing ferrous metal so that it can be picked up with an electromagnet
WO2009124015A2 (en) * 2008-03-31 2009-10-08 Mba Polymers, Inc. Methods, systems, and devices for separating materials using magnetic and frictional properties

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810368A (en) * 1985-04-10 1989-03-07 Electro Minerals (Canada) Inc. Automatic method for separating and cleaning silicon carbide furnace materials
WO1996012562A1 (en) * 1994-10-22 1996-05-02 Heckett Multiserv Plc Treatment of waste material
US6070733A (en) * 1994-10-22 2000-06-06 Heckert Multiserv Plc Treatment of waste material
FR2827197A1 (en) * 2001-07-11 2003-01-17 Aldo Urtiti Artificial magnetization of non-magnetic products, especially aluminum cans, by coating of aluminum can with paint containing ferrous metal so that it can be picked up with an electromagnet
WO2009124015A2 (en) * 2008-03-31 2009-10-08 Mba Polymers, Inc. Methods, systems, and devices for separating materials using magnetic and frictional properties
WO2009124015A3 (en) * 2008-03-31 2010-01-14 Mba Polymers, Inc. Methods, systems, and devices for separating materials using magnetic and frictional properties
US8056728B2 (en) 2008-03-31 2011-11-15 Mba Polymers, Inc. Methods, systems, and devices for separating materials using magnetic and frictional properties

Also Published As

Publication number Publication date
FR2411635B1 (en) 1982-04-09

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