DE69020298D1 - Verfahren zur Klassifizierung von Teilchen. - Google Patents

Verfahren zur Klassifizierung von Teilchen.

Info

Publication number
DE69020298D1
DE69020298D1 DE69020298T DE69020298T DE69020298D1 DE 69020298 D1 DE69020298 D1 DE 69020298D1 DE 69020298 T DE69020298 T DE 69020298T DE 69020298 T DE69020298 T DE 69020298T DE 69020298 D1 DE69020298 D1 DE 69020298D1
Authority
DE
Germany
Prior art keywords
particle
cavity
mutually orthogonal
classification method
particle classification
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
DE69020298T
Other languages
English (en)
Other versions
DE69020298T2 (de
Inventor
Barry John Downing
John David Salter
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
Application granted granted Critical
Publication of DE69020298D1 publication Critical patent/DE69020298D1/de
Publication of DE69020298T2 publication Critical patent/DE69020298T2/de
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
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/389—Precious stones; Pearls
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
DE69020298T 1989-10-19 1990-10-19 Verfahren zur Klassifizierung von Teilchen. Expired - Fee Related DE69020298T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ZA897921 1989-10-19

Publications (2)

Publication Number Publication Date
DE69020298D1 true DE69020298D1 (de) 1995-07-27
DE69020298T2 DE69020298T2 (de) 1996-01-11

Family

ID=25579868

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69020298T Expired - Fee Related DE69020298T2 (de) 1989-10-19 1990-10-19 Verfahren zur Klassifizierung von Teilchen.

Country Status (9)

Country Link
US (1) US5124662A (de)
EP (1) EP0424167B1 (de)
JP (1) JPH03183934A (de)
KR (1) KR0162898B1 (de)
AT (1) ATE124138T1 (de)
AU (1) AU625588B2 (de)
BR (1) BR9005278A (de)
CA (1) CA2027949C (de)
DE (1) DE69020298T2 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4215908A1 (de) * 1992-05-14 1993-11-18 Ubbo Prof Dr Ricklefs Optische Einrichtung zur Bestimmung der Größe von Partikeln
DE4231526C1 (de) * 1992-09-21 1994-03-17 Rwe Entsorgung Ag Verfahren zur Ermittlung von Flüssigkeiten in faserigen und/oder porigen Materialien
DE4317513A1 (de) * 1993-05-26 1994-12-01 Select Ingenieurgesellschaft F Verfahren und Vorrichtung zur selektiven Trennung von Körpern und Anwendung des Verfahrens
DE4411815A1 (de) * 1994-04-07 1995-10-12 Albatros Applied Technologies Verfahren zur Messung eines mehrkomponentigen und/oder mehrphasigen strömenden Mediums
US6183126B1 (en) * 1994-04-11 2001-02-06 The John Hopkins University Method for nondestructive/noncontact microwave detection of electrical and magnetic property discontinuities in materials
US6112903A (en) * 1997-08-20 2000-09-05 Eftek Corporation Cullet sorting by differential thermal characteristics
US6255830B1 (en) * 1998-05-04 2001-07-03 Nortel Networks Limited Method of testing shielding effectiveness and electromagnetic field generator for use in testing shielding effectiveness
BE1015022A3 (nl) * 2002-07-05 2004-08-03 Wetenschappelijk En Tech Onder Werkwijze en inrichting voor het onderscheiden van edelstenen.
US7378849B2 (en) * 2003-10-07 2008-05-27 Sra International, Inc. Method and apparatus for obtaining spatial information and measuring the dielectric constant of an object
US7034549B2 (en) * 2004-03-31 2006-04-25 The United States Of America As Represented By The Secretary Of The Navy Device to detect and measure the concentration and characterization of airborne conductive or dielectric particles
UA79247C2 (en) * 2004-06-01 2007-06-11 Volodymyr Mykhailovyc Voloshyn Method and device (variants) of separation of raw material by lumps
DE102007029908A1 (de) * 2007-06-28 2009-01-02 Tews Elektronik Dipl.-Ing. Manfred Tews Vorrichtung und Verfahren zur Masse- und/oder Feuchtemessung von dielektrischen Objekten
EP2753919A4 (de) * 2011-08-03 2015-04-08 Tech Resources Pty Ltd Verarbeitung von untertägig abgebautem material
MX2014001261A (es) * 2011-08-04 2014-10-24 Tech Resources Pty Ltd Procesamiento de mineral.
WO2019180718A1 (en) * 2018-03-23 2019-09-26 Ariel Scientific Innovations Ltd. Method and device for grading diamonds

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1106185A (en) * 1964-05-29 1968-03-13 Nils Bertil Agdur Device for measuring a property of a material
US3562631A (en) * 1969-03-27 1971-02-09 Nasa Dual resonant cavity absorption cell
DE2724959A1 (de) * 1977-06-02 1978-12-21 Bayer Ag Vorrichtung zur bestimmung des wassergehaltes von isotropen materialien mit hilfe der mikrowellenabsorption
AT381173B (de) * 1982-05-11 1986-09-10 List Hans Verfahren zur quantitativen bestimmung von partikelfoermigen verbrennungsrueckstaenden
US4812739A (en) * 1986-09-15 1989-03-14 Swanson Claude V Apparatus and method for using microwave radiation to measure water content of a fluid
FR2619217B1 (fr) * 1987-08-04 1989-11-10 Aerospatiale Dispositif de mesure en continu du taux d'impregnation par une substance de fibres conductrices ou non d'electricite.
BR8805383A (pt) * 1987-10-19 1989-06-20 De Beers Ind Diamond Processo para classificacao de uma massa de material em particulas e aparelho para uso no mesmo
US4899100A (en) * 1988-08-01 1990-02-06 The United States Of America As Represented By The United States Department Of Energy Microwave measurement of the mass of frozen hydrogen pellets

Also Published As

Publication number Publication date
CA2027949C (en) 1999-08-24
EP0424167B1 (de) 1995-06-21
CA2027949A1 (en) 1991-04-20
BR9005278A (pt) 1991-09-17
EP0424167A3 (en) 1992-02-19
ATE124138T1 (de) 1995-07-15
EP0424167A2 (de) 1991-04-24
DE69020298T2 (de) 1996-01-11
AU6483290A (en) 1991-04-26
US5124662A (en) 1992-06-23
JPH03183934A (ja) 1991-08-09
AU625588B2 (en) 1992-07-16
KR910008405A (ko) 1991-05-31
KR0162898B1 (ko) 1999-05-01

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee