CA2102678A1 - Thermal sorting - Google Patents

Thermal sorting

Info

Publication number
CA2102678A1
CA2102678A1 CA002102678A CA2102678A CA2102678A1 CA 2102678 A1 CA2102678 A1 CA 2102678A1 CA 002102678 A CA002102678 A CA 002102678A CA 2102678 A CA2102678 A CA 2102678A CA 2102678 A1 CA2102678 A1 CA 2102678A1
Authority
CA
Canada
Prior art keywords
particles
thermal
thermal treatment
certain feature
fraction
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
CA002102678A
Other languages
French (fr)
Other versions
CA2102678C (en
Inventor
Victor Emul Ross
Charlie Maurice Levitt
Matthias Kofler
Bernard Alan Jennings
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.)
De Beers Industrial Diamond Division Pty Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2102678A1 publication Critical patent/CA2102678A1/en
Application granted granted Critical
Publication of CA2102678C publication Critical patent/CA2102678C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
    • B03B1/02—Preparatory heating
    • 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
    • B03B5/62—Washing granular, powdered or lumpy materials; Wet separating by hydraulic classifiers, e.g. of launder, tank, spiral or helical chute concentrator type
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34—Sorting according to other particular properties

Landscapes

  • Sampling And Sample Adjustment (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

The invention is directed to the sorting of particles according to the thermal properties of the particles. The method comprises, as a first step, subjecting the particles to one ox more thermal treatment steps so that particles with different intrinsic thermal properties are brought to different temperatures. In the next step, conducted either during or after the thermal treatment steps, the particles are subjected to a further, non-thermal treatment. This treatment is chosen to give selected particles that are distinguished from other particles by a difference in temperature a certain feature which is not an intrinsic feature of the particles prior to the thermal treatment step. The particles can then be sorted into a fraction having the certain feature after a predetermined time period has elapsed since the further treatment step and a fraction not having the certain feature after that time lapse.
CA002102678A 1992-11-09 1993-11-08 Thermal sorting Expired - Fee Related CA2102678C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA92/8615 1992-11-09
ZA928615 1992-11-09

Publications (2)

Publication Number Publication Date
CA2102678A1 true CA2102678A1 (en) 1994-05-10
CA2102678C CA2102678C (en) 2003-06-10

Family

ID=25582304

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002102678A Expired - Fee Related CA2102678C (en) 1992-11-09 1993-11-08 Thermal sorting

Country Status (5)

Country Link
AU (1) AU663807B2 (en)
BR (1) BR9304665A (en)
CA (1) CA2102678C (en)
GB (1) GB2272174B (en)
ZA (1) ZA938312B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA95785B (en) * 1994-02-21 1995-10-09 De Beers Ind Diamond Method and apparatus for sorting particulate material according to the thermal properties of the particles
WO2013149293A1 (en) * 2012-04-04 2013-10-10 Technological Resources Pty. Limited Separating mined material
WO2014183151A1 (en) * 2013-05-13 2014-11-20 Technological Resources Pty. Limited Sorting mined material
CN103752532B (en) * 2014-01-14 2015-12-09 河南科技大学 A kind of rotating disk air-sweeping type tobacco leaf sorting system controlled by PLC control system
RU2546702C1 (en) * 2014-04-01 2015-04-10 Федеральное государственное бюджетное учреждение науки Институт физики-технических проблем Севера им. В.П. Ларионова Сибирского отделения Российской академии наук Separation method of diamond-containing mixtures of minerals
RU170793U1 (en) * 2017-01-20 2017-05-11 Федеральное государственное бюджетное учреждение науки Институт физико-технических проблем Севера им. В.П. Ларионова Сибирского отделения Российской академии наук (ИФТПС СО РАН) THERMOADHESION SEPARATOR
CN112122131B (en) * 2020-08-10 2021-10-08 温州职业技术学院 Blood taking needle detection device
CN117000741B (en) * 2023-09-12 2024-02-06 武安市铭诚混凝土有限公司 Concrete recycling device and method with separation function

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB365718A (en) * 1930-11-28 1932-01-28 William Henry Ames An improved method and apparatus for grading peas and the like prior to canning
US4077871A (en) * 1975-04-14 1978-03-07 Occidental Petroleum Corporation Separation of colored particulate glass
IT1077425B (en) * 1976-10-04 1985-05-04 Nl Industries Inc RECOVERY OF METAL LEAD, LEAD COMPOUNDS AND PLASTIC MATERIALS OF SCRAP ACCUMULATORS
FR2676939B1 (en) * 1991-05-31 1993-10-01 Royal Champignon Sa PROCESS FOR SORTING PLANT PRODUCTS, PARTICULARLY MUSHROOMS.

Also Published As

Publication number Publication date
AU663807B2 (en) 1995-10-19
ZA938312B (en) 1994-06-07
AU5054593A (en) 1994-05-19
GB2272174B (en) 1995-12-06
GB9322993D0 (en) 1994-01-05
CA2102678C (en) 2003-06-10
BR9304665A (en) 1994-05-24
GB2272174A (en) 1994-05-11

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed