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NL7504557A - Powdery material dust generating tendency determination - photodetectors are peripheral mounted around internal bladed rotating drum - Google Patents

Powdery material dust generating tendency determination - photodetectors are peripheral mounted around internal bladed rotating drum

Info

Publication number
NL7504557A
NL7504557A NL7504557A NL7504557A NL7504557A NL 7504557 A NL7504557 A NL 7504557A NL 7504557 A NL7504557 A NL 7504557A NL 7504557 A NL7504557 A NL 7504557A NL 7504557 A NL7504557 A NL 7504557A
Authority
NL
Netherlands
Prior art keywords
drum
degree
photodetectors
powdery material
rotating drum
Prior art date
Application number
NL7504557A
Other languages
Dutch (nl)
Original Assignee
Unie Van Kunstmestfab Bv
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 Unie Van Kunstmestfab Bv filed Critical Unie Van Kunstmestfab Bv
Priority to NL7504557A priority Critical patent/NL7504557A/en
Publication of NL7504557A publication Critical patent/NL7504557A/en

Links

Classifications

    • 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
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
    • G01N21/53—Scattering, i.e. diffuse reflection within a body or fluid within a flowing fluid, e.g. smoke
    • 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
    • G01N15/06—Investigating concentration of particle suspensions

Landscapes

  • Chemical & Material Sciences (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)
  • Dispersion Chemistry (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A method for the determination of the degree to which a powdery material generates dust by friction between its grains when being poured and the degree to such dust remains suspended after being liberated into the surrounding atmosphere, especially applicable to the handling of artificial fertilisers. A known quantity of the material is placed in a drum (1) rotating about a horizontal axis at a known speed, and the degree of opacity of the air in the drum is measured during the rotation for a given time and for a predetermined time after the drum has ceased rotation. The drum may have internal blades (6) and be shaped as a pair of conical sections with their bases together at the centre. The degree of opacity is determined by optical means, which may consists of a beam (22) passing along the axis of the drum, the scatter from which on impingement on the back of the drum is measured by a circle of photodetectors arranged around the axis (16).
NL7504557A 1975-04-17 1975-04-17 Powdery material dust generating tendency determination - photodetectors are peripheral mounted around internal bladed rotating drum NL7504557A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7504557A NL7504557A (en) 1975-04-17 1975-04-17 Powdery material dust generating tendency determination - photodetectors are peripheral mounted around internal bladed rotating drum

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7504557A NL7504557A (en) 1975-04-17 1975-04-17 Powdery material dust generating tendency determination - photodetectors are peripheral mounted around internal bladed rotating drum

Publications (1)

Publication Number Publication Date
NL7504557A true NL7504557A (en) 1976-10-19

Family

ID=19823596

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7504557A NL7504557A (en) 1975-04-17 1975-04-17 Powdery material dust generating tendency determination - photodetectors are peripheral mounted around internal bladed rotating drum

Country Status (1)

Country Link
NL (1) NL7504557A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006696A5 (en) * 1992-07-30 1994-11-22 Shannon Ind Distributors Radiation test device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1006696A5 (en) * 1992-07-30 1994-11-22 Shannon Ind Distributors Radiation test device

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