GB960408A - Improvements in or relating to methods of determining the ash content of coal - Google Patents

Improvements in or relating to methods of determining the ash content of coal

Info

Publication number
GB960408A
GB960408A GB412860A GB412860A GB960408A GB 960408 A GB960408 A GB 960408A GB 412860 A GB412860 A GB 412860A GB 412860 A GB412860 A GB 412860A GB 960408 A GB960408 A GB 960408A
Authority
GB
United Kingdom
Prior art keywords
coal
radio
ash content
active
isotope
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
GB412860A
Inventor
Alan Lyle Gray
Arnold Metcalf
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.)
Plessey Co Ltd
Original Assignee
Plessey Co 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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB412860A priority Critical patent/GB960408A/en
Publication of GB960408A publication Critical patent/GB960408A/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
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/22—Fuels, explosives
    • G01N33/222—Solid fuels, e.g. coal

Abstract

960,408. Radio-active analysis of the ash content of coal. PLESSEY CO. Ltd. Feb. 10, 1961 [Feb. 5, 1960], No. 4128/60. Heading G1A. A method of determining the ash content of coal consists in the steps of irradiation of the coal by radio-active particles to produce the radioactive isotope of the material which produces the principal component of the ash content and of subsequently measuring the radio-active radiation emitted by the isotope. The coal 1 carried on a conveyer belt 2 is irradiated by neutrons from a vacuum type source or from radio-active sources 5 in a head 3 provided with a biological shield 4. The ash produces the isotope alumium 28 emitting gamma rays which are detected by scintillator material 8 surrounding the belt and producing light pulses operating one or more photo-multipliers 9 and circuits selective to the pulse amplitude for aluminium 28 to pass electric pulses to a rate motor and recorder 11 operated from a high tension unit 10. An alarm 12 or control device is operated when the output from the motor 11 exceeds a predetermined figure. A discrete sample of coal may be subjected to the radiation, and then examined at a spaced or seperated detecting unit.
GB412860A 1960-02-05 1960-02-05 Improvements in or relating to methods of determining the ash content of coal Expired GB960408A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB412860A GB960408A (en) 1960-02-05 1960-02-05 Improvements in or relating to methods of determining the ash content of coal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB412860A GB960408A (en) 1960-02-05 1960-02-05 Improvements in or relating to methods of determining the ash content of coal

Publications (1)

Publication Number Publication Date
GB960408A true GB960408A (en) 1964-06-10

Family

ID=9771279

Family Applications (1)

Application Number Title Priority Date Filing Date
GB412860A Expired GB960408A (en) 1960-02-05 1960-02-05 Improvements in or relating to methods of determining the ash content of coal

Country Status (1)

Country Link
GB (1) GB960408A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580684A (en) * 1982-01-27 1986-04-08 General Mining Union Corporation Limited Radiometric measurement
CN114047312A (en) * 2022-01-04 2022-02-15 西安阿尔特测控技术有限公司 Coal quality online analysis method based on data processing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4580684A (en) * 1982-01-27 1986-04-08 General Mining Union Corporation Limited Radiometric measurement
CN114047312A (en) * 2022-01-04 2022-02-15 西安阿尔特测控技术有限公司 Coal quality online analysis method based on data processing

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