FR2402867A2 - Dispositif permettant de determiner une courbe de granulometrie d'un melange de particules - Google Patents

Dispositif permettant de determiner une courbe de granulometrie d'un melange de particules

Info

Publication number
FR2402867A2
FR2402867A2 FR7727308A FR7727308A FR2402867A2 FR 2402867 A2 FR2402867 A2 FR 2402867A2 FR 7727308 A FR7727308 A FR 7727308A FR 7727308 A FR7727308 A FR 7727308A FR 2402867 A2 FR2402867 A2 FR 2402867A2
Authority
FR
France
Prior art keywords
mixt
photodiodes
optical system
particle
convergent optical
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.)
Granted
Application number
FR7727308A
Other languages
English (en)
Other versions
FR2402867B2 (fr
Inventor
Jean Cornillault
Francois Joly
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.)
Compagnie Industriel des Lasers CILAS SA
Original Assignee
Compagnie Industriel des Lasers CILAS SA
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 Compagnie Industriel des Lasers CILAS SA filed Critical Compagnie Industriel des Lasers CILAS SA
Priority to FR7727308A priority Critical patent/FR2402867A2/fr
Priority to BE789018A priority patent/BE869735R/fr
Priority to IT68997/78A priority patent/IT1160617B/it
Publication of FR2402867A2 publication Critical patent/FR2402867A2/fr
Application granted granted Critical
Publication of FR2402867B2 publication Critical patent/FR2402867B2/fr
Granted 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
    • G01N15/02—Investigating particle size or size distribution
    • G01N15/0205—Investigating particle size or size distribution by optical means
    • G01N15/0211—Investigating a scatter or diffraction pattern
    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N2021/4704—Angular selective
    • G01N2021/4711—Multiangle measurement
    • G01N2021/4716—Using a ring of sensors, or a combination of diaphragm and sensors; Annular sensor

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

L'invention concerne un dispositif permettant de déterminer une courbe de granulométrie d un mélange de particules. Ce dispositif comporte un générateur laser dont le faisceau 1 traverse un échantillon du mélange, un système optique 3 pour former dans son plan focal 4 une image de la tache de diffraction du mélange, un réseau 52 de photodiodes divisé en plusieurs zones et disposé dans le plan focal, ce réseau étant relié à une source de courant 63 et un système 68 de traitement des signaux électriques délivrés par le réseau. Application à l'analyse des poudres de ciment
FR7727308A 1977-09-09 1977-09-09 Dispositif permettant de determiner une courbe de granulometrie d'un melange de particules Granted FR2402867A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7727308A FR2402867A2 (fr) 1977-09-09 1977-09-09 Dispositif permettant de determiner une courbe de granulometrie d'un melange de particules
BE789018A BE869735R (fr) 1977-09-09 1978-08-14 Dispositif permettant de determiner une courbe de granulometrie d'un melange de particules
IT68997/78A IT1160617B (it) 1977-09-09 1978-08-29 Dispositivo per la determinazione di un curva di granulometria di una miscela di particelle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7727308A FR2402867A2 (fr) 1977-09-09 1977-09-09 Dispositif permettant de determiner une courbe de granulometrie d'un melange de particules

Publications (2)

Publication Number Publication Date
FR2402867A2 true FR2402867A2 (fr) 1979-04-06
FR2402867B2 FR2402867B2 (fr) 1980-08-01

Family

ID=9195205

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727308A Granted FR2402867A2 (fr) 1977-09-09 1977-09-09 Dispositif permettant de determiner une courbe de granulometrie d'un melange de particules

Country Status (3)

Country Link
BE (1) BE869735R (fr)
FR (1) FR2402867A2 (fr)
IT (1) IT1160617B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022906A1 (de) * 1979-06-22 1981-01-22 Thery Geraet zur bestimmung des histogramms der groessenverteilung von partikeln, besonders von blutkoerperchen
DE2938342A1 (de) * 1979-09-21 1981-04-09 Compagnie Industrielle des Lasers S.A., Marcoussis, Essonne Vorrichtung zur bestimmung der korngroessenverteilung mit hilfe eines diffraktometers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022906A1 (de) * 1979-06-22 1981-01-22 Thery Geraet zur bestimmung des histogramms der groessenverteilung von partikeln, besonders von blutkoerperchen
DE2938342A1 (de) * 1979-09-21 1981-04-09 Compagnie Industrielle des Lasers S.A., Marcoussis, Essonne Vorrichtung zur bestimmung der korngroessenverteilung mit hilfe eines diffraktometers

Also Published As

Publication number Publication date
BE869735R (fr) 1979-02-14
IT1160617B (it) 1987-03-11
FR2402867B2 (fr) 1980-08-01
IT7868997A0 (it) 1978-08-29

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