JPS57141536A - Measuring method for grain size of granular body - Google Patents

Measuring method for grain size of granular body

Info

Publication number
JPS57141536A
JPS57141536A JP56027284A JP2728481A JPS57141536A JP S57141536 A JPS57141536 A JP S57141536A JP 56027284 A JP56027284 A JP 56027284A JP 2728481 A JP2728481 A JP 2728481A JP S57141536 A JPS57141536 A JP S57141536A
Authority
JP
Japan
Prior art keywords
grain size
shadow
state
granular body
granular
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.)
Pending
Application number
JP56027284A
Other languages
Japanese (ja)
Inventor
Tsutomu Fujita
Shigeyuki Hashizume
Katsuyuki Miki
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.)
JFE Steel Corp
Original Assignee
Kawasaki Steel Corp
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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP56027284A priority Critical patent/JPS57141536A/en
Publication of JPS57141536A publication Critical patent/JPS57141536A/en
Pending 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

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)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

PURPOSE:To improve measuring accuracy of the grain size of a granular body in moving or stationary accumulative state, by photographing after jetting a fine powder slurry on the surface of the granular body having unevenness on its surface. CONSTITUTION:When the shape of the surface of a granular body 18 is remarkably uneven, the shadow produced by the grain boundary of the surface of the body 18 is photographed, but the shadow basing on the unevenness of the face is photographed and the error in the measurement of grain size should occure. For this reason, a fine powder slurry 20 is jetted on the surface of the body 18 moving on a belt conveyor 8 in an accumulative state through a nozzle 10. At this time, the uneven shape at the body 18 is eliminated by the slurry 20 and only the shadow of a grain boundary remains. This state is picked up by using a television camera 12 and an illuminator 14 and raw material of the body 18 is charged in a blast furnace 6. A mean grain size of the body 18 is found by a repeating number of light and darkness of picked up picture. In this manner, the mean grain size of the body 18 in the accumulative state is measured with high accuracy.
JP56027284A 1981-02-26 1981-02-26 Measuring method for grain size of granular body Pending JPS57141536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56027284A JPS57141536A (en) 1981-02-26 1981-02-26 Measuring method for grain size of granular body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56027284A JPS57141536A (en) 1981-02-26 1981-02-26 Measuring method for grain size of granular body

Publications (1)

Publication Number Publication Date
JPS57141536A true JPS57141536A (en) 1982-09-01

Family

ID=12216765

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56027284A Pending JPS57141536A (en) 1981-02-26 1981-02-26 Measuring method for grain size of granular body

Country Status (1)

Country Link
JP (1) JPS57141536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6120839A (en) * 1984-07-10 1986-01-29 Fuji Photo Film Co Ltd Bacteria counter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6120839A (en) * 1984-07-10 1986-01-29 Fuji Photo Film Co Ltd Bacteria counter

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