Resumo

M.G.MOJA; OTUNNIYI, I.O.  e  MENDONIDIS, P.. Thiol collector blends for improved PGM recovery: a case study of a UG2 ore. J. S. Afr. Inst. Min. Metall. [online]. 2020, vol.120, n.5, pp.345-348. ISSN 2411-9717.  http://dx.doi.org/10.17159/2411-9717/179/2020.

Different thiol collectors are widely used to improve the flotation performance of PGM-containing ore. They are used either as a single collector or as a collector blend. The performance of sodium n-propyl xanthate (SNPX), dithiocarbamate (DTC), and O-isopropyl-N-ethyl thionocarbamate (IPETC) collectors was evaluated in order to improve the recovery of PGMs from UG2 ore. SNPX was used as single collector, followed by SNPX blends with DTC and IPETC. The best blend improved the 3PGM + Au recovery from 81% to 86% without compromising the grade. As thiols remain the most widely used collectors in the recovery of PGMs from sulphide ores, particularly with leaner and more complex occurrences, there is room for continued research on the most effective blends.

Palavras-chave : froth flotation; collector; thiol blends; PGMs; recovery.

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