GB2199657B - Diamond sorting - Google Patents

Diamond sorting

Info

Publication number
GB2199657B
GB2199657B GB8726532A GB8726532A GB2199657B GB 2199657 B GB2199657 B GB 2199657B GB 8726532 A GB8726532 A GB 8726532A GB 8726532 A GB8726532 A GB 8726532A GB 2199657 B GB2199657 B GB 2199657B
Authority
GB
United Kingdom
Prior art keywords
diamond sorting
diamond
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.)
Expired - Lifetime
Application number
GB8726532A
Other versions
GB8726532D0 (en
GB2199657A (en
Inventor
Stuart Hedley Robertson
Carlton Nigel Dodge
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 GB8726532D0 publication Critical patent/GB8726532D0/en
Publication of GB2199657A publication Critical patent/GB2199657A/en
Application granted granted Critical
Publication of GB2199657B publication Critical patent/GB2199657B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B07C5/36—Sorting apparatus characterised by the means used for distribution
    • B07C5/363—Sorting apparatus characterised by the means used for distribution by means of air
    • B07C5/365—Sorting apparatus characterised by the means used for distribution by means of air using a single separation means
    • B07C5/366—Sorting apparatus characterised by the means used for distribution by means of air using a single separation means during free fall of the articles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/87—Investigating jewels

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
GB8726532A 1986-11-12 1987-11-12 Diamond sorting Expired - Lifetime GB2199657B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA868581 1986-11-12

Publications (3)

Publication Number Publication Date
GB8726532D0 GB8726532D0 (en) 1987-12-16
GB2199657A GB2199657A (en) 1988-07-13
GB2199657B true GB2199657B (en) 1990-12-12

Family

ID=25578628

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8726532A Expired - Lifetime GB2199657B (en) 1986-11-12 1987-11-12 Diamond sorting

Country Status (3)

Country Link
AU (1) AU595660B2 (en)
BR (1) BR8706126A (en)
GB (1) GB2199657B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206699A (en) 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0714807B2 (en) * 1986-08-20 1995-02-22 ド ビアーズ コンソリデイティッド マインズ リミテッド Separation method
BE1002936A4 (en) * 1988-01-29 1991-09-03 Argyle Diamond Sales Ltd METHOD AND APPARATUS FOR SORTING AND / OR CONFIRMING THE IDENTIFICATION OF PRECIOUS STONES.
GB2219082B (en) * 1988-05-06 1992-08-26 Gersan Ets A method of identifying specific objects or zones
IL92133A (en) * 1989-10-27 1993-01-31 Uri Neta Haifa And Aharon Yifr Method and apparatus for identifying gemstones, particularly diamonds
GB9103552D0 (en) * 1991-02-20 1991-04-10 Gersan Ets Classifying or sorting
GB2504052B (en) * 2012-03-16 2017-05-10 De Beers Uk Ltd Sorting aggregate material
CN106269564B (en) * 2016-08-23 2019-05-14 北京柯林柯矿业科技有限公司 Ore sorting process and equipment based on image recognition technology and mechanical arm
CN112916407A (en) * 2020-04-29 2021-06-08 江苏旷博智能技术有限公司 Method for sorting coal and gangue
CN117120831A (en) * 2021-04-28 2023-11-24 住友电工硬质合金株式会社 Method and device for measuring nitrogen concentration of diamond

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140555A (en) * 1983-05-24 1984-11-28 British Petroleum Co Plc Diamond separation

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA757668B (en) * 1975-12-08 1977-07-27 De Beers Cons Mines Ltd Separation of materials

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140555A (en) * 1983-05-24 1984-11-28 British Petroleum Co Plc Diamond separation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5206699A (en) 1988-05-06 1993-04-27 Gersan Establishment Sensing a narrow frequency band of radiation and gemstones

Also Published As

Publication number Publication date
GB8726532D0 (en) 1987-12-16
BR8706126A (en) 1988-06-14
AU8117987A (en) 1988-05-19
GB2199657A (en) 1988-07-13
AU595660B2 (en) 1990-04-05

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Legal Events

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

Effective date: 20001112