DE69020800T2 - Vorrichtung zur Feststellung von Teilchen in flüssigen Metallen. - Google Patents

Vorrichtung zur Feststellung von Teilchen in flüssigen Metallen.

Info

Publication number
DE69020800T2
DE69020800T2 DE69020800T DE69020800T DE69020800T2 DE 69020800 T2 DE69020800 T2 DE 69020800T2 DE 69020800 T DE69020800 T DE 69020800T DE 69020800 T DE69020800 T DE 69020800T DE 69020800 T2 DE69020800 T2 DE 69020800T2
Authority
DE
Germany
Prior art keywords
electrodes
passage
carrying
interference
current
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 - Lifetime
Application number
DE69020800T
Other languages
English (en)
Other versions
DE69020800D1 (de
Inventor
Raynald Hachey
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
Publication of DE69020800D1 publication Critical patent/DE69020800D1/de
Application granted granted Critical
Publication of DE69020800T2 publication Critical patent/DE69020800T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • 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
    • G01N33/20—Metals
    • G01N33/205—Metals in liquid state, e.g. molten metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Medicinal Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Manufacture Of Metal Powder And Suspensions Thereof (AREA)
  • Investigating And Analyzing Materials By Characteristic Methods (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
DE69020800T 1989-05-18 1990-05-17 Vorrichtung zur Feststellung von Teilchen in flüssigen Metallen. Expired - Lifetime DE69020800T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000600148A CA1328679C (en) 1989-05-18 1989-05-18 Apparatus for particle determination in liquid metals

Publications (2)

Publication Number Publication Date
DE69020800D1 DE69020800D1 (de) 1995-08-17
DE69020800T2 true DE69020800T2 (de) 1995-12-07

Family

ID=4140073

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69020800T Expired - Lifetime DE69020800T2 (de) 1989-05-18 1990-05-17 Vorrichtung zur Feststellung von Teilchen in flüssigen Metallen.
DE199090305341T Pending DE398719T1 (de) 1989-05-18 1990-05-17 Vorrichtung zur feststellung von teilchen in fluessigen metallen.

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE199090305341T Pending DE398719T1 (de) 1989-05-18 1990-05-17 Vorrichtung zur feststellung von teilchen in fluessigen metallen.

Country Status (10)

Country Link
US (1) US5130639A (de)
EP (1) EP0398719B1 (de)
JP (1) JP2966475B2 (de)
KR (1) KR0162490B1 (de)
AT (1) ATE125042T1 (de)
AU (1) AU630959B2 (de)
CA (1) CA1328679C (de)
DE (2) DE69020800T2 (de)
ES (1) ES2075156T3 (de)
ZA (1) ZA903812B (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1315127C (en) * 1989-02-03 1993-03-30 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
US6175227B1 (en) * 1997-07-03 2001-01-16 Coulter International Corp. Potential-sensing method and apparatus for sensing and characterizing particles by the Coulter principle
US6122599A (en) 1998-02-13 2000-09-19 Mehta; Shailesh Apparatus and method for analyzing particles
DE19823836C2 (de) * 1998-05-28 2000-05-04 Fresenius Medical Care De Gmbh Vorrichtung und Verfahren zum berührungsfreien Messen der Leitfähigkeit einer in einem Strömungskanal befindlichen Flüssigkeit
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
JP3611771B2 (ja) * 2000-04-21 2005-01-19 シスメックス株式会社 粒子信号処理装置およびそれを用いた粒子測定装置
EP1162449A1 (de) * 2000-06-06 2001-12-12 Universiteit Gent Wechselstrombasiertes Detektionsverfahren und Vorrichtung zur Grössenbestimmung zur Grössenbestimmung von kolloidalenTeilchen, Zellen und Bakterien
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
DE60233708D1 (de) * 2001-11-30 2009-10-29 Sysmex Corp Teilchenanalysator
DE60305127T2 (de) 2002-11-21 2006-11-16 Heraeus Electro-Nite International N.V. Verbesserte Vorrichtung und Verfahren zur Detektierung und Messung von Partikeln in einer Metallschmelze
EP2894457B1 (de) * 2004-03-04 2016-08-31 Novelis, Inc. Elektrodenkonfiguration für LIMCA
US8287724B2 (en) * 2007-07-05 2012-10-16 Baxter International Inc. Dialysis fluid measurement systems using conductive contacts
US20090007642A1 (en) * 2007-07-05 2009-01-08 Baxter International Inc. Dialysis fluid measurement method and apparatus using conductive contacts
EP2906927B1 (de) * 2012-10-15 2021-08-04 ABB Inc. Analysevorrichtung für flüssigmetallreinheit
CA2896726C (en) 2013-03-12 2017-11-07 Novelis Inc. Methods of and apparatus for measuring metal cleanliness
WO2014164564A1 (en) 2013-03-12 2014-10-09 Novelis Inc. Methods of and apparatus for determining particle inclusion and size in molten metal
US10466313B2 (en) * 2014-12-12 2019-11-05 Korea Research Institute Of Standards And Science Magnetic field sensor and apparatus for measuring magnetic field
US10177696B1 (en) * 2017-05-26 2019-01-08 American Silver, Llc Adjusting a distance between an electrode and a liquid
CN111362563B (zh) * 2020-03-30 2022-04-19 郑州旭飞光电科技有限公司 玻璃窑炉的监测装置和方法

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH552211A (de) * 1972-11-30 1974-07-31 Contraves Ag Zaehl- und analysiereinrichtung fuer in einer elektrolytfluessigkeit suspendierte teilchen.
US3944917A (en) * 1973-08-13 1976-03-16 Coulter Electronics, Inc. Electrical sensing circuitry for particle analyzing device
US4060717A (en) * 1975-10-30 1977-11-29 Leco Corporation Acid tester
CH614781A5 (de) * 1977-06-27 1979-12-14 Contraves Ag
US4435681A (en) * 1981-09-28 1984-03-06 Senichi Masuda Bipolar ionic current probe unit and method for measuring positive and negative current densities by means of the same probe unit
US4527114A (en) * 1982-02-25 1985-07-02 Coulter Electronics, Inc. Electrical slit scanning apparatus
US4555662A (en) * 1983-03-03 1985-11-26 Limca Research Inc. Method and apparatus for the detection and measurement of particulates in molten metal
US4600880A (en) * 1983-03-03 1986-07-15 Limca Research Inc. Apparatus for the detection and measurement of particulates in molten metal
GB8505047D0 (en) * 1985-02-27 1985-03-27 Alcan Int Ltd Studying particles
US4843325A (en) * 1988-01-29 1989-06-27 In-Situ, Inc. Complementary sensing device for minimizing the effects of common mode voltages
CA1315127C (en) * 1989-02-03 1993-03-30 Raynald Hachey Apparatus for particle determination in liquid metals
US4972137A (en) * 1989-05-31 1990-11-20 Coulter Electronics, Inc. Isolation circuit for blood cell counter
US5025220A (en) * 1989-09-21 1991-06-18 Ford Motor Company Continuous measurement of the absolute conductivity of a liquid

Also Published As

Publication number Publication date
AU630959B2 (en) 1992-11-12
DE69020800D1 (de) 1995-08-17
JP2966475B2 (ja) 1999-10-25
AU5617390A (en) 1990-11-29
US5130639A (en) 1992-07-14
ZA903812B (en) 1991-03-27
EP0398719A2 (de) 1990-11-22
ES2075156T3 (es) 1995-10-01
JPH03142348A (ja) 1991-06-18
KR900018668A (ko) 1990-12-22
DE398719T1 (de) 1991-06-13
CA1328679C (en) 1994-04-19
EP0398719B1 (de) 1995-07-12
ATE125042T1 (de) 1995-07-15
KR0162490B1 (ko) 1999-05-01
EP0398719A3 (de) 1991-08-07

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