Research of biochemical gold recovery method using high-arsenic raw materials

Autor:	A. K. Koizhanova, A. N. Berkinbayeva, G. V. Sedelnikova, B. K. Kenzhaliyev, M. N. Azlan, D. R. Magomedov, Y. M. Efremova (Dyo)
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	hydrometallurgy biochemical method arsenic gold recovery Mining engineering. Metallurgy TN1-997
Zdroj:	Metalurgija, Vol 60, Iss 3-4, Pp 423-426 (2021)
Druh dokumentu:	article
ISSN:	0543-5846 1334-2576
Popis:	This article contains the results of experiments to recover gold from complex mineral raw materials containing more than 15 % arsenic. Laboratory tests showed that standard cyanidation recovers only 26,4 % of gold into the solution. Additional oxidizing reagents used increase the leaching efficiency and enable to recover more than 40 % of gold during subsequent cyanidation. The efficiency has been established for replacement of cyanide with thiourea and thiosulfate solutions. 79,5 %, i.e. the maximum recovery rate, was found in the experiment with preliminary oxidation with T. Ferrooxidans, a bacterial culture, followed by leaching with a thiourea solution.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/3c310a56b85242dbaa6169d8af669e24 Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF