GB793301A - Improvements in and relating to a method for the determination of the ash content of coal - Google Patents

Improvements in and relating to a method for the determination of the ash content of coal

Info

Publication number
GB793301A
GB793301A GB959754A GB959754A GB793301A GB 793301 A GB793301 A GB 793301A GB 959754 A GB959754 A GB 959754A GB 959754 A GB959754 A GB 959754A GB 793301 A GB793301 A GB 793301A
Authority
GB
United Kingdom
Prior art keywords
ash content
detector
coal
iron
content
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
GB959754A
Inventor
Geoffrey John Pitt
Roy Robert Gordon
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.)
Coal Industry Patents Ltd
Original Assignee
Coal Industry Patents Ltd
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 Coal Industry Patents Ltd filed Critical Coal Industry Patents Ltd
Priority to GB959754A priority Critical patent/GB793301A/en
Publication of GB793301A publication Critical patent/GB793301A/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
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
    • G01N23/223—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/07—Investigating materials by wave or particle radiation secondary emission
    • G01N2223/076—X-ray fluorescence

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

793,301. Measuring ash content by means of radiation. COAL INDUSTRY (PATENTS), Ltd. April 1, 1955 [April 1, 1954], No. 9597/54. Class 40 (3). The ash content of coal dust 12 flowing through a tube 13 having thin windows of plastics material is determined by a beam of X-rays from a source 10 some of which pass through the sample and are detected by an ionization chamber 16 while others are reflected to a detector 18 such as a Geiger counter which also receives fluorescence from the iron particles. Detector 18 is a Geiger counter so chosen as to respond only to the fluorescent radiation produced by the iron or alternatively is provided with a diffracting crystal so that only the fluorescent radiation is directed on to it. Detector 17 then produces an output dependent on the ash content of the coal but falsified by the iron content while detector 18 produces an output dependent on the iron content. At the output lead 22 of amplifier 20 to which both these signals are fed is produced a signal indicative of ash content. The Specification states that the X-rays should be of a wavelength of less than 1.74 Š.
GB959754A 1954-04-01 1954-04-01 Improvements in and relating to a method for the determination of the ash content of coal Expired GB793301A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB959754A GB793301A (en) 1954-04-01 1954-04-01 Improvements in and relating to a method for the determination of the ash content of coal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB959754A GB793301A (en) 1954-04-01 1954-04-01 Improvements in and relating to a method for the determination of the ash content of coal

Publications (1)

Publication Number Publication Date
GB793301A true GB793301A (en) 1958-04-16

Family

ID=9875052

Family Applications (1)

Application Number Title Priority Date Filing Date
GB959754A Expired GB793301A (en) 1954-04-01 1954-04-01 Improvements in and relating to a method for the determination of the ash content of coal

Country Status (1)

Country Link
GB (1) GB793301A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958777A (en) * 1958-04-03 1960-11-01 Stamicarbon Apparatus for measuring properties of granular material
US3082873A (en) * 1960-02-26 1963-03-26 Mannesmann Ag Apparatus for classifying particulate material
US3144556A (en) * 1960-11-30 1964-08-11 Stamicarbon Apparatus to measure the reflection coefficient with respect to a reference measurement of a material when conveyed past a radiation source
US3246145A (en) * 1961-12-19 1966-04-12 Socony Mobil Oil Co Inc Liquid density measurement system for determination of oil in water
US3291981A (en) * 1963-06-26 1966-12-13 Arthur J Stock Calibrating means for radioactive test apparatus which tests fluent material moving through a conduit
US3354308A (en) * 1965-04-30 1967-11-21 Philips Electronic Pharma Apparatus with means to measure the characteristic X-ray emission from and the density of a material
USRE30884E (en) 1976-12-17 1982-03-16 Sentrol Systems Ltd. On-line system for monitoring sheet material additives
CN103149133A (en) * 2013-02-05 2013-06-12 中国矿业大学 Electromagnetic wave based coal dust detection method and device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2958777A (en) * 1958-04-03 1960-11-01 Stamicarbon Apparatus for measuring properties of granular material
US3082873A (en) * 1960-02-26 1963-03-26 Mannesmann Ag Apparatus for classifying particulate material
US3144556A (en) * 1960-11-30 1964-08-11 Stamicarbon Apparatus to measure the reflection coefficient with respect to a reference measurement of a material when conveyed past a radiation source
US3246145A (en) * 1961-12-19 1966-04-12 Socony Mobil Oil Co Inc Liquid density measurement system for determination of oil in water
US3291981A (en) * 1963-06-26 1966-12-13 Arthur J Stock Calibrating means for radioactive test apparatus which tests fluent material moving through a conduit
US3354308A (en) * 1965-04-30 1967-11-21 Philips Electronic Pharma Apparatus with means to measure the characteristic X-ray emission from and the density of a material
USRE30884E (en) 1976-12-17 1982-03-16 Sentrol Systems Ltd. On-line system for monitoring sheet material additives
CN103149133A (en) * 2013-02-05 2013-06-12 中国矿业大学 Electromagnetic wave based coal dust detection method and device
CN103149133B (en) * 2013-02-05 2014-11-19 中国矿业大学 Electromagnetic wave based coal dust detection method and device

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