GB1452864A - Method of and the device for determining particles size distri butions in a mass flow of a granular material - Google Patents

Method of and the device for determining particles size distri butions in a mass flow of a granular material

Info

Publication number
GB1452864A
GB1452864A GB484574A GB484574A GB1452864A GB 1452864 A GB1452864 A GB 1452864A GB 484574 A GB484574 A GB 484574A GB 484574 A GB484574 A GB 484574A GB 1452864 A GB1452864 A GB 1452864A
Authority
GB
United Kingdom
Prior art keywords
particles
zone
measurement
distribution
carrier fluid
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
Application number
GB484574A
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DE19732304879 external-priority patent/DE2304879C3/en
Application filed by Individual filed Critical Individual
Publication of GB1452864A publication Critical patent/GB1452864A/en
Expired 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
    • 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
    • G01N15/0255—Investigating particle size or size distribution with mechanical, e.g. inertial, classification, and investigation of sorted collections

Abstract

1452864 Determining particle size distributions K LESCHONSKI 1 Feb 1974 [1 Feb 1973] 04845/74 Heading G1A [Also in Division G2] The size distribution of particles is determined by injecting them into a flowing carrier fluid (liquid or gas) so that the particles are distributed across the fluid-flow according to their size; the distribution is then found by measuring the absorption of radiation by the particles at different points across the flow. Figs. 1 and 2 show the carrier fluid 2 passing via flow straightening baffles 3 into a measuring zone 4, the particles being injected at 10. Small particles follow path 15 and large ones follow path 14 to form a distribution across the zone. A light source 5, lens 6, apertures 7 and detector 8 are pivoted about point 11 so as to scan across the zone along an arcuate path. The optical assembly is driven by motor 13; the inside of zone 4 is electrically conductive and is earthed to avoid static electricity. The scanning may be replaced by an elongate source; alternatively multiple sources and detectors may be reciprocated across the zone. The measurement may be effected in regions where there are no particles to obtain a measurement of the absorption due to the carrier fluid alone. Gamma rays may be used. The particle size measurement may be used for process control.
GB484574A 1973-02-01 1974-02-01 Method of and the device for determining particles size distri butions in a mass flow of a granular material Expired GB1452864A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732304879 DE2304879C3 (en) 1973-02-01 Method and device for determining the particle size distributions of a granular material

Publications (1)

Publication Number Publication Date
GB1452864A true GB1452864A (en) 1976-10-20

Family

ID=5870618

Family Applications (1)

Application Number Title Priority Date Filing Date
GB484574A Expired GB1452864A (en) 1973-02-01 1974-02-01 Method of and the device for determining particles size distri butions in a mass flow of a granular material

Country Status (12)

Country Link
JP (1) JPS5653689B2 (en)
AT (1) AT353040B (en)
AU (1) AU6511574A (en)
BE (1) BE810257A (en)
BR (1) BR7400724D0 (en)
CA (1) CA1006375A (en)
CS (1) CS174777B2 (en)
ES (1) ES422623A1 (en)
FR (1) FR2216577B1 (en)
GB (1) GB1452864A (en)
IT (1) IT1002807B (en)
ZA (1) ZA74575B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159163A2 (en) * 1984-04-05 1985-10-23 The University Of Toronto Innovations Foundation Particle classifier

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5183777U (en) * 1974-12-27 1976-07-05
JPS52107899A (en) * 1976-03-06 1977-09-09 Kano Hajime Measuring method of dust diameter distribution by piezoelectric vibration method
IT1179316B (en) * 1984-04-19 1987-09-16 Vittorio Prodi DEVICE FOR THE SEPARATION IN GRANULOMETRIC CLASSES OF AEROSOL PARTICLES
JPH0726688Y2 (en) * 1989-09-11 1995-06-14 ニッタ株式会社 Particle measuring device
JPH0750702Y2 (en) * 1989-09-16 1995-11-15 株式会社堀場製作所 Sample cell for particle size distribution analyzer
IT1276729B1 (en) * 1995-06-15 1997-11-03 Enel Spa OPTICAL GRANULOMETER TO MEASURE THE CONCENTRATION OF PARTICULATE PRESENT IN A FLUID AT LOW CONCENTRATION

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0159163A2 (en) * 1984-04-05 1985-10-23 The University Of Toronto Innovations Foundation Particle classifier
EP0159163A3 (en) * 1984-04-05 1987-03-11 The University Of Toronto Innovations Foundation Particle classifier

Also Published As

Publication number Publication date
DE2304879A1 (en) 1974-08-29
FR2216577A1 (en) 1974-08-30
JPS5653689B2 (en) 1981-12-21
CA1006375A (en) 1977-03-08
IT1002807B (en) 1976-05-20
CS174777B2 (en) 1977-04-29
ES422623A1 (en) 1976-05-01
FR2216577B1 (en) 1976-11-26
ATA78274A (en) 1979-03-15
AU6511574A (en) 1975-08-07
ZA74575B (en) 1974-11-27
AT353040B (en) 1979-10-25
JPS5047691A (en) 1975-04-28
BR7400724D0 (en) 1974-10-29
DE2304879B2 (en) 1975-09-18
BE810257A (en) 1974-05-16

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Legal Events

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