X- and m-ray techniques for determination of the ash content...

Details X- and m-ray techniques for determination of the ash content... X- and m-ray techniques for determination of the ash content...

G - Physics

01

N

358/12

G01N 23/00 (2006.01)

Patent

CA 1150860

ABSTRACT An X- or .gamma.-ray scatter assembly for use in quan- titative determination of the concentration of ash in coke or coal, said assembly comprising an X- or .gamma.-ray source, an energy sensitive detector to detect X- or .gamma.-rays resulting from scatter in said coal or coke of X- or .gamma.-rays from said source, and shielding means adapted to reduce the intensity of direct X-rays or .gamma.-rays and to collimate partly the beam of X-rays and/or .gamma.-rays to ensure matched volumes and deep penetration in the coal, said assembly having associated therewith an electronic analyser adapted to select all or part of the detected X-ray or .gamma.-ray spectrum, thereby modifying the output of said assembly. Two or more assemblies are employed in an apparatus and method for analysing coal or coke.

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