DE69010346T2 - Apparat zum Teilchennachweis in flüssigen Metallen. - Google Patents

Apparat zum Teilchennachweis in flüssigen Metallen.

Info

Publication number
DE69010346T2
DE69010346T2 DE69010346T DE69010346T DE69010346T2 DE 69010346 T2 DE69010346 T2 DE 69010346T2 DE 69010346 T DE69010346 T DE 69010346T DE 69010346 T DE69010346 T DE 69010346T DE 69010346 T2 DE69010346 T2 DE 69010346T2
Authority
DE
Germany
Prior art keywords
signal
antenna
electrodes
cancellation
interference
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
DE69010346T
Other languages
English (en)
Other versions
DE69010346D1 (de
Inventor
Raynald Hachey
Gaetan Deschenes
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.)
Rio Tinto Alcan International Ltd
Original Assignee
Alcan International Ltd Canada
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 Alcan International Ltd Canada filed Critical Alcan International Ltd Canada
Application granted granted Critical
Publication of DE69010346D1 publication Critical patent/DE69010346D1/de
Publication of DE69010346T2 publication Critical patent/DE69010346T2/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
    • 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
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle

Landscapes

  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
DE69010346T 1989-02-03 1990-02-01 Apparat zum Teilchennachweis in flüssigen Metallen. Expired - Fee Related DE69010346T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000590387A CA1315127C (en) 1989-02-03 1989-02-03 Apparatus for particle determination in liquid metals

Publications (2)

Publication Number Publication Date
DE69010346D1 DE69010346D1 (de) 1994-08-11
DE69010346T2 true DE69010346T2 (de) 1995-02-16

Family

ID=4139586

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69010346T Expired - Fee Related DE69010346T2 (de) 1989-02-03 1990-02-01 Apparat zum Teilchennachweis in flüssigen Metallen.

Country Status (8)

Country Link
US (1) US5039935A (de)
EP (1) EP0381485B1 (de)
JP (1) JPH02290532A (de)
AT (1) ATE108277T1 (de)
AU (1) AU626193B2 (de)
CA (1) CA1315127C (de)
DE (1) DE69010346T2 (de)
NO (1) NO180278C (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1328679C (en) * 1989-05-18 1994-04-19 Raynald Hachey Apparatus for particle determination in liquid metals
US5834928A (en) * 1995-10-04 1998-11-10 Alcan International Limited Method and apparatus for the detection and measurement of solid particles in molten metal
US5708209A (en) * 1996-08-27 1998-01-13 Aluminum Company Of America Apparatus and method for ultrasonic particle detection in molten metal
US6693443B2 (en) * 1999-04-02 2004-02-17 Worcester Polytechnic Institute Systems for detecting and measuring inclusions
US6337564B2 (en) 1999-04-13 2002-01-08 Alcoa Inc. Detecting and classifying hard and soft inclusions in liquid metal
WO2002023153A2 (en) 2000-09-12 2002-03-21 Heraeus Electro-Nite International N.V. Apparatus for the detection and measurement of particulates in molten metal
US6744245B2 (en) 2001-07-27 2004-06-01 Coulter International Corp. Particle count correction method and apparatus
EP1422510B1 (de) * 2002-11-21 2006-05-10 Heraeus Electro-Nite International N.V. Verbesserte Vorrichtung und Verfahren zur Detektierung und Messung von Partikeln in einer Metallschmelze
WO2005085761A1 (en) 2004-03-04 2005-09-15 Novelis Inc. Electrode configuration for limca
EP2948752B1 (de) * 2013-03-12 2017-05-03 Novelis, Inc. Verfahren und vorrichtung zum messen der sauberkeit von metallen
US10411682B2 (en) 2013-03-12 2019-09-10 Novelis Inc. Methods of and apparatus for determining particle inclusion and size in molten metal

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3502973A (en) * 1966-05-23 1970-03-24 Coulter Electronics Collating apparatus for pairs of electrical pulses produced by particle analyzing apparatus
US3652427A (en) * 1969-12-22 1972-03-28 Little Inc A Method for monitoring the oxygen and carbon contents in a molten metal
US3987391A (en) * 1974-12-02 1976-10-19 Coulter Electronics, Inc. Method and apparatus for correcting total particle volume error due to particle coincidence
CH614781A5 (de) * 1977-06-27 1979-12-14 Contraves Ag
US4278519A (en) * 1980-01-25 1981-07-14 Won Vann Y Electrode assembly for determining the identification of metals and metal alloys
US4447883A (en) * 1981-05-26 1984-05-08 Technicon Instruments Corporation Coincidence-error correcting apparatus and method
US4600880A (en) * 1983-03-03 1986-07-15 Limca Research Inc. Apparatus for the detection and measurement of particulates in molten metal
US4555662A (en) * 1983-03-03 1985-11-26 Limca Research Inc. Method and apparatus for the detection and measurement of particulates in molten metal
GB8410500D0 (en) * 1984-04-25 1984-05-31 Orbec Ltd Monitoring particles in liquids
GB8414856D0 (en) * 1984-06-11 1984-07-18 Alcan Int Ltd Detection and measurement of suspended particles in molten metal
CA1328679C (en) * 1989-05-18 1994-04-19 Raynald Hachey Apparatus for particle determination in liquid metals

Also Published As

Publication number Publication date
ATE108277T1 (de) 1994-07-15
NO180278C (no) 1997-03-19
JPH02290532A (ja) 1990-11-30
NO900520L (no) 1990-08-06
US5039935A (en) 1991-08-13
DE69010346D1 (de) 1994-08-11
EP0381485A2 (de) 1990-08-08
NO180278B (no) 1996-12-09
AU626193B2 (en) 1992-07-23
AU4905590A (en) 1990-08-09
NO900520D0 (no) 1990-02-02
EP0381485A3 (de) 1991-08-28
EP0381485B1 (de) 1994-07-06
CA1315127C (en) 1993-03-30

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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