CA2559516C - Detection de diamants - Google Patents

Detection de diamants Download PDF

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Publication number
CA2559516C
CA2559516C CA2559516A CA2559516A CA2559516C CA 2559516 C CA2559516 C CA 2559516C CA 2559516 A CA2559516 A CA 2559516A CA 2559516 A CA2559516 A CA 2559516A CA 2559516 C CA2559516 C CA 2559516C
Authority
CA
Canada
Prior art keywords
diamond
particles
particle
photons
carbon
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
CA2559516A
Other languages
English (en)
Other versions
CA2559516A1 (fr
Inventor
Simon Henry Connell
Jacques Pierre Friedrich Sellschop (Deceased)
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.)
SELLSCHOP SUSAN MARIETTA
University of the Witwatersrand
Original Assignee
SELLSCHOP SUSAN MARIETTA
University of the Witwatersrand
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 SELLSCHOP SUSAN MARIETTA, University of the Witwatersrand filed Critical SELLSCHOP SUSAN MARIETTA
Publication of CA2559516A1 publication Critical patent/CA2559516A1/fr
Application granted granted Critical
Publication of CA2559516C publication Critical patent/CA2559516C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
    • G01N23/221—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by activation analysis
    • 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
    • B07C5/346—Sorting according to other particular properties according to radioactive properties

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)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

L'invention concerne un procédé et un appareil de détection de la présence de diamants dans une particule et de tri des particules selon qu'elles contiennent ou non des diamants. Selon ce procédé, la particule est exposée (36) à des photons d'une énergie sélectionnée à laquelle la résonance dipolaire géante (GDR) est excitée pour la réaction nucléaire des photons avec le carbone, et la particule est identifiée comme potentiellement un diamant ou une particule contenant un diamant selon son interaction dans les photons incidents. Dans les modes de réalisation préférés, la particule est identifiée (42) comme potentiellement un diamant ou une particule contenant un diamant selon que l'isotope ?11¿C, ayant une caractéristique demi-vie d'environ vingt minutes, soit produit par la réaction nucléaire photon/carbone, et selon que des photons rayons gamma détectables de manière coïncidente et collinéaire soient émis par la particule à un niveau d'énergie distinctif.
CA2559516A 2004-03-12 2005-03-14 Detection de diamants Expired - Lifetime CA2559516C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ZA200402010 2004-03-12
ZA2004/2010 2004-03-12
PCT/IB2005/000643 WO2005088283A1 (fr) 2004-03-12 2005-03-14 Detection de diamants

Publications (2)

Publication Number Publication Date
CA2559516A1 CA2559516A1 (fr) 2005-09-22
CA2559516C true CA2559516C (fr) 2012-07-10

Family

ID=34962210

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2559516A Expired - Lifetime CA2559516C (fr) 2004-03-12 2005-03-14 Detection de diamants

Country Status (7)

Country Link
CN (1) CN1942759B (fr)
AP (1) AP1986A (fr)
AU (1) AU2005220403B2 (fr)
CA (1) CA2559516C (fr)
RU (1) RU2334974C2 (fr)
WO (1) WO2005088283A1 (fr)
ZA (1) ZA200608025B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101441184B (zh) * 2007-11-20 2012-09-05 同方威视技术股份有限公司 利用x射线进行原木检疫辐照的方法和装置
CA2753095A1 (fr) * 2009-02-23 2010-08-26 Technological Resources Pty. Limited Detection d'un mineral contenu dans un materiau
CN102939261B (zh) 2010-06-03 2015-09-23 六号元素有限公司 金刚石工具
PE20131111A1 (es) * 2010-08-04 2013-09-23 Tech Resources Pty Ltd Clasificacion de material extraido
RU2470714C1 (ru) * 2011-07-21 2012-12-27 Общество с ограниченной ответственностью "Лаборатория рентгенодиагностических систем" Способ сепарации алмазов
GB2504052B (en) * 2012-03-16 2017-05-10 De Beers Uk Ltd Sorting aggregate material
RU2517148C1 (ru) * 2012-12-28 2014-05-27 Евгений Матвеевич Лукьянченко Способ сепарации частиц полезного материала и устройство для его осуществления
RU2521723C1 (ru) * 2013-03-01 2014-07-10 Общество с ограниченной ответственностью "Нейтронные технологии" Способ и устройство для обнаружения алмазов в кимберлите
RU2612734C2 (ru) * 2015-08-18 2017-03-13 Общество с ограниченной ответственностью "Диамант" Установка для сухого обогащения кимберлитовой руды методом меченых нейтронов
CN105499156B (zh) * 2015-12-02 2019-03-01 虞雅仙 一种水钻检查方法
RU2670677C9 (ru) * 2017-02-07 2019-09-13 Акционерная компания "АЛРОСА" (публичное акционерное общество) "АК "АЛРОСА" (ПАО)) Устройство для сепарации алмазов
CA3079654C (fr) 2017-10-19 2025-03-18 University Of Johannesburg Radiographie tomographique par rayons gamma
CN108709900B (zh) * 2018-08-07 2024-09-06 杨欣薇 钻石快速批量筛选检测仪及钻石批量筛选方法
US11921064B2 (en) 2018-12-11 2024-03-05 University Of Johannesburg Detector arrangement, detection system and method of processing data from a detector arrangement for high throughput data handling
WO2020152618A1 (fr) * 2019-01-23 2020-07-30 University Of Johannesburg Agencement de détecteur, système de détection et procédé de positionnement d'un agencement de détecteur pour réduire les artefacts d'imagerie
CN112986297A (zh) * 2019-12-17 2021-06-18 联邦科学技术研究组织 使用伽马活化分析以实现批量分选的快速矿石分析
NL2026338B1 (en) * 2020-08-25 2022-04-29 Univ Johannesburg Material analysis method and system
CN112024451B (zh) * 2020-08-28 2021-08-31 北京科技大学 一种基于受试者操作特征曲线分析的矿石拣选决策方法
EP4208301A4 (fr) * 2020-09-02 2024-05-29 Botswana International University of Science and Technology Procédé et système de tri de diamants

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA71899B (en) * 1971-02-12 1972-07-26 De Beers Cons Mines Ltd Separation of particles by electromagnetic radiation
ZA71900B (en) * 1971-02-12 1972-08-30 De Beers Cons Mines Ltd Separation of particles by electromagnetic radiation
EP0059033A1 (fr) * 1981-02-24 1982-09-01 Sphere Investments Limited Triage de minerai
US4428902A (en) * 1981-05-13 1984-01-31 Murray Kenneth M Coal analysis system
US4756866A (en) * 1985-10-09 1988-07-12 Alvarez Luis W Nitrogen detection
GB2219394B (en) * 1988-05-06 1992-09-16 Gersan Ets Sensing a narrow frequency band of radiation and examining objects or zones
GB2219081B (en) * 1988-05-06 1992-12-02 Gersan Ets Identifying specific objects or zones
US5334652A (en) * 1991-06-18 1994-08-02 Exxon Chemical Patents, Inc. Polyester-based coating compositions having high pigment-to-binder ratios
RU2003191C1 (ru) * 1993-01-18 1993-11-15 Игорь Петрович Еремеев Способ трансмутации изотопов
CA2138503C (fr) * 1993-12-22 2004-10-12 Ulf Anders Staffan Tapper Methode et appareil servant a classer des matieres particulaires
CA2139537C (fr) * 1994-01-07 2007-04-24 Ulf Anders Staffan Tapper Methode et appareil servant a classer une substance
DE19600241C2 (de) * 1995-01-13 2002-08-01 Bruker Biospin Gmbh Verfahren und Vorrichtung zum Auffinden von Edelsteinen in einer umgebenden Substanz mittels magnetischer Kernresonanz
RU2193185C2 (ru) * 2000-10-02 2002-11-20 Общество с ограниченной ответственностью Научно-производственная фирма "ТАПЕКО" Способ обнаружения алмазов на конвейере, в потоке или образце алмазоносной породы
CN1363836A (zh) * 2001-08-18 2002-08-14 李晓蔚 纯天然制品的判定方法
RU2199108C1 (ru) * 2002-04-10 2003-02-20 Акционерная компания "АЛРОСА" Способ сепарации алмазосодержащих материалов

Also Published As

Publication number Publication date
CA2559516A1 (fr) 2005-09-22
ZA200608025B (en) 2008-06-25
AU2005220403B2 (en) 2010-12-09
AP2006003753A0 (en) 2006-10-31
CN1942759B (zh) 2011-01-12
AP1986A (en) 2009-04-01
AU2005220403A1 (en) 2005-09-22
RU2334974C2 (ru) 2008-09-27
RU2006135960A (ru) 2008-04-20
WO2005088283A1 (fr) 2005-09-22
CN1942759A (zh) 2007-04-04

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