CA2245141A1 - On-line diamond detection - Google Patents

On-line diamond detection

Info

Publication number
CA2245141A1
CA2245141A1 CA002245141A CA2245141A CA2245141A1 CA 2245141 A1 CA2245141 A1 CA 2245141A1 CA 002245141 A CA002245141 A CA 002245141A CA 2245141 A CA2245141 A CA 2245141A CA 2245141 A1 CA2245141 A1 CA 2245141A1
Authority
CA
Canada
Prior art keywords
particles
particle
diamond
spot pattern
diffraction spot
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
CA002245141A
Other languages
French (fr)
Other versions
CA2245141C (en
Inventor
Ulf Anders Staffan Tapper
George William Over
Daniel Jacobus Van Der Merwe
Jacek Guzek
Stephanus Dawid Le Roux
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 Consolidated Mines Ltd
Original Assignee
De Beers Consolidated Mines Limited
Ulf Anders Staffan Tapper
George William Over
Daniel Jacobus Van Der Merwe
Jacek Guzek
Stephanus Dawid Le Roux
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 Consolidated Mines Limited, Ulf Anders Staffan Tapper, George William Over, Daniel Jacobus Van Der Merwe, Jacek Guzek, Stephanus Dawid Le Roux filed Critical De Beers Consolidated Mines Limited
Publication of CA2245141A1 publication Critical patent/CA2245141A1/en
Application granted granted Critical
Publication of CA2245141C publication Critical patent/CA2245141C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

The invention concerns a method of sorting diamond-containing particles online from gangue particles. In the method, the particles (12) are subjected to irradiation by an X-ray or thermal neutron beam (20) from a source (18). A detector (22), arranged at a predetermined orientation to the incident beam (20), detects radiation which is elastically scattered by each particle. A diffraction spot pattern is then derived from the detected radiation and is compared, by a computer (24), with a diffraction spot pattern for diamond. A determination is made whether there is correlation between the patterns which is indicative of the presence, in the particle, of diamond. When such correlation exists, the relevant particles are separated from the other particle s.
CA002245141A 1997-08-13 1998-08-12 On-line diamond detection Expired - Fee Related CA2245141C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA977249 1997-08-13
ZA97/7249 1997-08-13

Publications (2)

Publication Number Publication Date
CA2245141A1 true CA2245141A1 (en) 1999-02-13
CA2245141C CA2245141C (en) 2006-07-25

Family

ID=25586534

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002245141A Expired - Fee Related CA2245141C (en) 1997-08-13 1998-08-12 On-line diamond detection

Country Status (2)

Country Link
AU (1) AU747298B2 (en)
CA (1) CA2245141C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2612734C2 (en) * 2015-08-18 2017-03-13 Общество с ограниченной ответственностью "Диамант" Installation for dry enrichment of kimberlite ore by method of labelled neutrons
RU2625640C1 (en) * 2016-05-17 2017-07-17 Федеральное государственное бюджетное учреждение науки Институт физики высоких давлений им. Л.Ф. Верещагина Российской академии наук (ИФВД РАН) Method for sorting diamond-containing material
CN114088742A (en) * 2021-11-18 2022-02-25 吉林大学 Cast blade collapse position detection device of torque converter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022117112A1 (en) * 2020-12-04 2022-06-09 北京霍里思特科技有限公司 Detecting mechanism, and ore sorting machine having same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1553822A (en) * 1976-06-11 1979-10-10 Hart M X-ray topography of gemstones
AU557022B2 (en) * 1981-10-23 1986-12-04 De Beers Industrial Diamond Division (Proprietary) Limited Diamond sorting using x-rays
GB2219081B (en) * 1988-05-06 1992-12-02 Gersan Ets Identifying specific objects or zones

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2612734C2 (en) * 2015-08-18 2017-03-13 Общество с ограниченной ответственностью "Диамант" Installation for dry enrichment of kimberlite ore by method of labelled neutrons
RU2625640C1 (en) * 2016-05-17 2017-07-17 Федеральное государственное бюджетное учреждение науки Институт физики высоких давлений им. Л.Ф. Верещагина Российской академии наук (ИФВД РАН) Method for sorting diamond-containing material
CN114088742A (en) * 2021-11-18 2022-02-25 吉林大学 Cast blade collapse position detection device of torque converter
CN114088742B (en) * 2021-11-18 2022-09-06 吉林大学 Cast blade collapse position detection device of torque converter

Also Published As

Publication number Publication date
AU747298B2 (en) 2002-05-16
CA2245141C (en) 2006-07-25
AU7991298A (en) 1999-02-25

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Legal Events

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