GB2292455B - Classification of particles according to raman response - Google Patents

Classification of particles according to raman response

Info

Publication number
GB2292455B
GB2292455B GB9516356A GB9516356A GB2292455B GB 2292455 B GB2292455 B GB 2292455B GB 9516356 A GB9516356 A GB 9516356A GB 9516356 A GB9516356 A GB 9516356A GB 2292455 B GB2292455 B GB 2292455B
Authority
GB
United Kingdom
Prior art keywords
classification
particles according
raman response
raman
response
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 - Fee Related
Application number
GB9516356A
Other versions
GB9516356D0 (en
GB2292455A (en
Inventor
Con-Vivier Venter
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 GB9516356D0 publication Critical patent/GB9516356D0/en
Publication of GB2292455A publication Critical patent/GB2292455A/en
Application granted granted Critical
Publication of GB2292455B publication Critical patent/GB2292455B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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)
GB9516356A 1994-08-19 1995-08-09 Classification of particles according to raman response Expired - Fee Related GB2292455B (en)

Applications Claiming Priority (1)

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

Publications (3)

Publication Number Publication Date
GB9516356D0 GB9516356D0 (en) 1995-10-11
GB2292455A GB2292455A (en) 1996-02-21
GB2292455B true GB2292455B (en) 1998-09-30

Family

ID=25584259

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9516356A Expired - Fee Related GB2292455B (en) 1994-08-19 1995-08-09 Classification of particles according to 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

Citations (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
EP0341095A2 (en) * 1988-05-06 1989-11-08 Gersan Establishment Identifying the position of objects or zones
GB2219080A (en) * 1988-05-06 1989-11-29 Gersan Ets Identifying gemstones
GB2285311A (en) * 1993-12-30 1995-07-05 De Beers Ind Diamond Classifying diamondiferous material by detecting raman emission in a time window

Patent Citations (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
EP0341095A2 (en) * 1988-05-06 1989-11-08 Gersan Establishment Identifying the position of objects or zones
GB2219080A (en) * 1988-05-06 1989-11-29 Gersan Ets Identifying gemstones
GB2285311A (en) * 1993-12-30 1995-07-05 De Beers Ind Diamond Classifying diamondiferous material by detecting raman emission in a time window

Also Published As

Publication number Publication date
ZA955745B (en) 1996-02-20
GB9516356D0 (en) 1995-10-11
GB2292455A (en) 1996-02-21
AU697587B2 (en) 1998-10-08
AU2843395A (en) 1996-02-29
CA2155922A1 (en) 1996-02-20

Similar Documents

Publication Publication Date Title
IL115720A (en) Liquiflash particles and their production
GB2278679B (en) Analysis of particle characteristics
EP0764265A4 (en) Acoustic detection of particles
EP0842042A4 (en) Improved methods for the manufacture of magnetically responsive particles
HUP9801758A3 (en) Modified alpha alumina particles
PL320789A1 (en) Method of obtaining high-purity melamine
GB9417356D0 (en) Detergent particles and process for their production
GB9417354D0 (en) Detergent particles and process for their production
PL341049A1 (en) Agglomerates of particles
GB2292455B (en) Classification of particles according to raman response
GB9418985D0 (en) Dispersion of solid particles in water
GB9203799D0 (en) Analysis of particle characteristics
EP0469498A3 (en) Particle filtering halfmask
AU3818595A (en) Leaching of precipitator ash
GB9602415D0 (en) Polyacrylamide particles
GB9500536D0 (en) Particles containing perfume
GB9422317D0 (en) Separation of materials
GB2286546B (en) Sorting particles according to their thermal properties
GB9703442D0 (en) Production of fine particles
GB9510889D0 (en) Electrostatic separation of particulate material
GB2305374B (en) Particle sorting according to thermal properties
ZA965290B (en) Particle sorting according to thermal properties
GB9419874D0 (en) Improvements to the making of dispersion strengthened materials
GB9422886D0 (en) Improvements to the making of dispersion strengthened materials
AU657046C (en) Collection of particulate material

Legal Events

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

Effective date: 20040809