CA2559516C - Detection of diamonds - Google Patents
Detection of diamonds Download PDFInfo
- 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.)
- Active
Links
- 239000010432 diamond Substances 0.000 title claims abstract description 110
- 238000001514 detection method Methods 0.000 title description 15
- 239000002245 particle Substances 0.000 claims abstract description 174
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 100
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 54
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 230000005251 gamma ray Effects 0.000 claims abstract description 22
- 238000004458 analytical method Methods 0.000 claims description 10
- 230000001678 irradiating effect Effects 0.000 claims description 9
- 230000000717 retained effect Effects 0.000 claims 1
- 230000003993 interaction Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 9
- 230000005461 Bremsstrahlung Effects 0.000 description 8
- 230000005855 radiation Effects 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 7
- 230000004907 flux Effects 0.000 description 6
- 239000011435 rock Substances 0.000 description 5
- 230000032258 transport Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- -1 diamond Chemical compound 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 241000276420 Lophius piscatorius Species 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA2004/2010 | 2004-03-12 | ||
ZA200402010 | 2004-03-12 | ||
PCT/IB2005/000643 WO2005088283A1 (en) | 2004-03-12 | 2005-03-14 | Detection of diamonds |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2559516A1 CA2559516A1 (en) | 2005-09-22 |
CA2559516C true CA2559516C (en) | 2012-07-10 |
Family
ID=34962210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2559516A Active CA2559516C (en) | 2004-03-12 | 2005-03-14 | Detection of diamonds |
Country Status (7)
Country | Link |
---|---|
CN (1) | CN1942759B (zh) |
AP (1) | AP1986A (zh) |
AU (1) | AU2005220403B2 (zh) |
CA (1) | CA2559516C (zh) |
RU (1) | RU2334974C2 (zh) |
WO (1) | WO2005088283A1 (zh) |
ZA (1) | ZA200608025B (zh) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010094087A1 (en) * | 2009-02-23 | 2010-08-26 | Technological Resources Pty. Limited | Detecting a mineral within a material |
JP5587497B2 (ja) | 2010-06-03 | 2014-09-10 | エレメント シックス リミテッド | ダイヤモンド工具 |
CA2806887A1 (en) * | 2010-08-04 | 2012-02-09 | Grant Ashley Wellwood | Sorting mined material |
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 |
CA3079654A1 (en) | 2017-10-19 | 2019-04-25 | University Of Johannesburg | Gamma ray tomographic radiography |
WO2020121214A1 (en) * | 2018-12-11 | 2020-06-18 | University Of Johannesburg | Detector arrangement, detection system and method of processing data from a detector arrangement for high throughput data handling |
WO2020152618A1 (en) * | 2019-01-23 | 2020-07-30 | University Of Johannesburg | Detector arrangement, detection system and method of positioning a detector arrangement to reduce imaging artefacts |
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 |
AU2020466611A1 (en) * | 2020-09-02 | 2023-05-04 | Botswana International University Of Science And Technology | Method and system for sorting of diamonds |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0059033A1 (en) * | 1981-02-24 | 1982-09-01 | Sphere Investments Limited | Ore sorting |
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 |
CA2138503C (en) * | 1993-12-22 | 2004-10-12 | Ulf Anders Staffan Tapper | Method and apparatus for the classification of particulate matter |
CA2139537C (en) * | 1994-01-07 | 2007-04-24 | Ulf Anders Staffan Tapper | Method and apparatus for the classification of matter |
CN1363836A (zh) * | 2001-08-18 | 2002-08-14 | 李晓蔚 | 纯天然制品的判定方法 |
-
2005
- 2005-03-14 CN CN2005800116079A patent/CN1942759B/zh not_active Expired - Fee Related
- 2005-03-14 RU RU2006135960/28A patent/RU2334974C2/ru active
- 2005-03-14 ZA ZA200608025A patent/ZA200608025B/xx unknown
- 2005-03-14 WO PCT/IB2005/000643 patent/WO2005088283A1/en active Application Filing
- 2005-03-14 CA CA2559516A patent/CA2559516C/en active Active
- 2005-03-14 AU AU2005220403A patent/AU2005220403B2/en active Active
-
2006
- 2006-09-29 AP AP2006003753A patent/AP1986A/xx active
Also Published As
Publication number | Publication date |
---|---|
CN1942759B (zh) | 2011-01-12 |
AP2006003753A0 (en) | 2006-10-31 |
RU2006135960A (ru) | 2008-04-20 |
CN1942759A (zh) | 2007-04-04 |
CA2559516A1 (en) | 2005-09-22 |
ZA200608025B (en) | 2008-06-25 |
AP1986A (en) | 2009-04-01 |
WO2005088283A1 (en) | 2005-09-22 |
RU2334974C2 (ru) | 2008-09-27 |
AU2005220403B2 (en) | 2010-12-09 |
AU2005220403A1 (en) | 2005-09-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2559516C (en) | Detection of diamonds | |
KR100261529B1 (ko) | 고속 중성자 작용을 이용한 금지품 검출 장치 및 검출 방법 | |
US7483509B2 (en) | Detecting special nuclear materials in suspect containers using high-energy gamma rays emitted by fission products | |
CA2139537C (en) | Method and apparatus for the classification of matter | |
CN105074440A (zh) | μ介子断层扫描检查中的初级和次级扫描 | |
JP2007526483A (ja) | 物体の2エネルギー放射線走査 | |
AU6359090A (en) | Multi-sensor explosive detection system | |
JPS6168577A (ja) | 非放射性物質からの放射性物質の連続選別方法 | |
RU2521723C1 (ru) | Способ и устройство для обнаружения алмазов в кимберлите | |
EP3333594A1 (en) | Inspection devices and inspection methods | |
US8642969B2 (en) | Sealed tube neutron generator equipped with alpha particle detectors and associated particle measurement system which uses the generator | |
EP1269166A2 (en) | Detection of fissile material | |
CA2138503C (en) | Method and apparatus for the classification of particulate matter | |
RU2623692C2 (ru) | Система и способ для обнаружения алмазов в кимберлите и способ предварительного обогащения алмазов с их применением | |
US20090232277A1 (en) | System and method for inspection of items of interest in objects | |
Jakubek et al. | Imaging with secondary radiation in hadron therapy beams with the 3D sensitive voxel detector | |
El Kanawati et al. | Gamma-ray signatures improvement of the EURITRACK tagged neutron inspection system database | |
Parry | Neutron activation analysis | |
RU2003082C1 (ru) | Способ идентификации золотоносных геологических пород | |
RU2813286C2 (ru) | Устройство обнаружения, система обнаружения и способ позиционирования устройства обнаружения для уменьшения артефактов изображения | |
RU2670677C9 (ru) | Устройство для сепарации алмазов | |
WO2020152618A1 (en) | Detector arrangement, detection system and method of positioning a detector arrangement to reduce imaging artefacts | |
Sebele | Detection of diamonds using the tagged neutron method | |
WO2023194919A1 (en) | Method for diamond detection | |
Tumer et al. | Three-dimensional container and cargo inspection system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request |