ZA955745B - Classification of particles according to their Raman response - Google Patents

Classification of particles according to their Raman response

Info

Publication number
ZA955745B
ZA955745B ZA955745A ZA955745A ZA955745B ZA 955745 B ZA955745 B ZA 955745B ZA 955745 A ZA955745 A ZA 955745A ZA 955745 A ZA955745 A ZA 955745A ZA 955745 B ZA955745 B ZA 955745B
Authority
ZA
South Africa
Prior art keywords
classification
particles according
raman response
raman
response
Prior art date
Application number
ZA955745A
Inventor
Con-Vivier Venter
Original Assignee
De Beers Ind Diamond
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 Ind Diamond filed Critical De Beers Ind Diamond
Publication of ZA955745B publication Critical patent/ZA955745B/en

Links

Classifications

    • 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
    • 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
    • B07C5/367—Sorting apparatus characterised by the means used for distribution by means of air using a plurality of separation means
    • B07C5/368—Sorting apparatus characterised by the means used for distribution by means of air using a plurality of separation means actuated independently
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering
    • 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
    • G01N21/85—Investigating moving fluids or granular solids
    • 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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/65—Raman scattering
    • G01N2021/653—Coherent methods [CARS]
    • G01N2021/655—Stimulated Raman

Landscapes

  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (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)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
ZA955745A 1994-08-19 1995-07-11 Classification of particles according to their Raman response ZA955745B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA946317 1994-08-19

Publications (1)

Publication Number Publication Date
ZA955745B true ZA955745B (en) 1996-02-20

Family

ID=25584259

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA955745A ZA955745B (en) 1994-08-19 1995-07-11 Classification of particles according to their Raman response

Country Status (4)

Country Link
AU (1) AU697587B2 (en)
CA (1) CA2155922A1 (en)
GB (1) GB2292455B (en)
ZA (1) ZA955745B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2241470C (en) * 1997-06-26 2005-06-21 De Beers Consolidated Mines Limited Diamond detection using coherent anti-stokes raman spectroscopy
BE1013056A3 (en) 1999-06-28 2001-08-07 Barco Elbicon Nv Method and device for sorting products.
US7608794B2 (en) 2006-04-20 2009-10-27 Sunsweet Growers, Inc. Process and system for sorting and pitting fruit
BE1018705A3 (en) * 2009-03-26 2011-07-05 Best 2 N V METHOD FOR SORTING POTATO PRODUCTS AND SORTING DEVICE FOR POTATO PRODUCTS
US8283589B2 (en) 2010-12-01 2012-10-09 Key Technology, Inc. Sorting apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4243881A (en) * 1979-10-12 1981-01-06 International Business Machines Corporation Time-resolved infrared spectral photography
US4545679A (en) * 1984-02-21 1985-10-08 The United States Of America As Represented By The United States Department Of Energy Frequency shift measurement in shock-compressed materials
GB2219078B (en) * 1988-05-06 1992-08-26 Gersan Ets Identifying the position of objects or zones
GB2219080B (en) * 1988-05-06 1992-11-04 Gersan Ets Identifying gemstones
ZA9410191B (en) * 1993-12-30 1995-08-25 De Beers Ind Diamond Particle classification method and apparatus

Also Published As

Publication number Publication date
GB2292455B (en) 1998-09-30
AU2843395A (en) 1996-02-29
GB2292455A (en) 1996-02-21
AU697587B2 (en) 1998-10-08
GB9516356D0 (en) 1995-10-11
CA2155922A1 (en) 1996-02-20

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