Resumo

SOKOLOV, A.; GOSTILO, V.; DEMSKY, M.  e  HASIKOVA, E.. Performance optimization of an industrial gamma activation assay system for analysing gold and rare metal ores. J. S. Afr. Inst. Min. Metall. [online]. 2019, vol.119, n.5, pp.509-513. ISSN 2411-9717.  http://dx.doi.org/10.17159/2411-9717/194/2019.

Previously, we upgraded and implemented two gamma activation assay (GAA) systems designed to analyse the gold content in raw ores at Zarafshan laboratory, Uzbekistan, and achieved a detection limit of less than 0.05 g/t under actual industrial conditions. Having started to design a fully modern, industrial GAA system for mining companies, this paper analyses the advantages, disadvantages, and special features of all major system components that can influence the sensitivity and accuracy of the analysis. The results of a study to optimize the detector geometry and sample size are presented and the performances of the linear electron accelerator, detector array, and sample transportation system of a modern, industrial GAA system for analysing gold, silver, and rare earth elements are considered.

Palavras-chave : gamma activation analysis; gold ore; mining.

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