DEVELOPMENT AND APPLICATIONS OF AN ON-LINE THERMAL NEUTRON PROMPT-GAMMA ELEMENT ANALYSIS SYSTEM

Liu Yuren，

Lu Yunxin，

Xie Yali，

Wang Yonghai，

Du Youling，

Tan Jin，

Meng Bonian，

R.S. Seymour

Nuclear Science and Techniques

Vol.2, No.2

pp.71-78

Published in print 01 May 1991

21800

This paper introduces the principles, instrumentation, implementation, and industrial applications of an on- line thermal neutron prompt- gamma element analysis system (using a ²⁵²Cf neutron source, Am- Be neutron source, or neutron generator). The energy resolution of the system at the H prompt- gamma full- energy photopeak (2.22325 MeV) is 3.6 keV. The concentration measurement error of Al₂O₃, Fe₂O₃, CaO and SiO₂ is ±0.3%, ±0.1%, ±0.4% and ±0.4%, respectively. The system has been tested on- site at both the Shandong and the Zhengzhou Aluminum Works. Our preliminary on- site measurements confirm that the stability, reliability, measurement range, and accuracy of the system can meet the requirements of the aluminum production process. Facilitation of this measurement at aluminum plants is expected to reduce plant costs by over 3 million dollars annually through reduced energy consumption, more rapid qualification of pulps being mixed during the production process, and in reduced labor costs.

Prompt- gammaNeutron activation analysisOn- lineAluminum Pulp

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