GB2239519B - Method and apparatus for IIB diamond sorting - Google Patents

Method and apparatus for IIB diamond sorting

Info

Publication number
GB2239519B
GB2239519B GB9026571A GB9026571A GB2239519B GB 2239519 B GB2239519 B GB 2239519B GB 9026571 A GB9026571 A GB 9026571A GB 9026571 A GB9026571 A GB 9026571A GB 2239519 B GB2239519 B GB 2239519B
Authority
GB
United Kingdom
Prior art keywords
diamond sorting
iib diamond
iib
sorting
diamond
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 - Fee Related
Application number
GB9026571A
Other versions
GB2239519A (en
GB9026571D0 (en
Inventor
Edwin Harm Roos
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
De Beers Industrial Diamond Division Pty Ltd
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 De Beers Industrial Diamond Division Pty Ltd filed Critical De Beers Industrial Diamond Division Pty Ltd
Publication of GB9026571D0 publication Critical patent/GB9026571D0/en
Publication of GB2239519A publication Critical patent/GB2239519A/en
Application granted granted Critical
Publication of GB2239519B publication Critical patent/GB2239519B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/389—Precious stones; Pearls
    • 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
    • B07C5/342—Sorting according to other particular properties according to optical properties, e.g. colour
    • B07C5/3425—Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain
    • B07C5/3427—Sorting according to other particular properties according to optical properties, e.g. colour of granular material, e.g. ore particles, grain by changing or intensifying the optical properties prior to scanning, e.g. by inducing fluorescence under UV or x-radiation, subjecting the material to a chemical reaction

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Sorting Of Articles (AREA)
GB9026571A 1989-12-06 1990-12-06 Method and apparatus for IIB diamond sorting Expired - Fee Related GB2239519B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA899316 1989-12-06

Publications (3)

Publication Number Publication Date
GB9026571D0 GB9026571D0 (en) 1991-01-23
GB2239519A GB2239519A (en) 1991-07-03
GB2239519B true GB2239519B (en) 1993-11-17

Family

ID=25579929

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9026571A Expired - Fee Related GB2239519B (en) 1989-12-06 1990-12-06 Method and apparatus for IIB diamond sorting

Country Status (3)

Country Link
AU (1) AU631700B2 (en)
BR (1) BR9006198A (en)
GB (1) GB2239519B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA943378B (en) * 1993-05-26 1995-01-16 De Beers Ind Diamond Classification based on thermal properties
CN103645122B (en) * 2013-11-05 2016-01-20 中国科学院电工研究所 Online ferromagnetic microparticles detection system
US11835473B2 (en) 2018-03-23 2023-12-05 Ariel Scientific Innovations Ltd. Method and device for grading diamonds using radiofrequency (RF) spectroscopy

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076146A (en) * 1980-01-25 1981-11-25 Gunsons Sortex Mineral & Autom Method and Apparatus for Sorting
GB2184043A (en) * 1985-12-11 1987-06-17 De Beers Ind Diamond Separation of particles having different heat capacities and coefficients of thermal conductivity

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7097887A (en) * 1986-04-03 1987-10-08 De Beers Industrial Diamond Division (Proprietary) Limited Sorting ore particles
GB2198242B (en) * 1986-11-28 1990-10-17 De Beers Ind Diamond Method and apparatus for sorting particulate ore by microwave attenuation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2076146A (en) * 1980-01-25 1981-11-25 Gunsons Sortex Mineral & Autom Method and Apparatus for Sorting
GB2184043A (en) * 1985-12-11 1987-06-17 De Beers Ind Diamond Separation of particles having different heat capacities and coefficients of thermal conductivity

Also Published As

Publication number Publication date
GB2239519A (en) 1991-07-03
GB9026571D0 (en) 1991-01-23
AU631700B2 (en) 1992-12-03
BR9006198A (en) 1991-09-24
AU6780690A (en) 1991-06-13

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19961206