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Ash On-Line Determination in Brown Coal by Means of Scattered Forward and Transmitted 60 keV and 660 keV Photons

 

作者: J. W. Leonhardt,   D. Fritsche,   G. Körner,   H.-W. Thümmel,  

 

期刊: Isotopenpraxis Isotopes in Environmental and Health Studies  （Taylor Available online 1985）
卷期: Volume 21, issue 10  

页码: 352-354

 

ISSN:0021-1915

 

年代: 1985

 

DOI:10.1080/10256018508623543

 

出版商: Taylor & Francis Group

 

关键词: ashos;attenuation;coal;gamma radiation;lignite;on-line measurement systems;radiation absorption analysis;transmission

 

数据来源: Taylor

 

摘要:

Combining the 60 keV scatter-transmission signal (s. d. about 4 wt % ash) with the 660 keV transmission signal thus eliminating residual influences of thickness and density variations the s. d. can be reduced to about 2 … 3 wt % ash. A gauge developed for on-line determination of ash content based on the 2-energy narrow beam transmission method using a micro-processor for data processing was tested at the main conveyour belt of a power station giving a s. d. of about 5 wt % ash with coal thickness variations between 5 and 40 cm.

 

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