Research of biochemical gold recovery method using high-arsenic raw materials
Koizhanova A.K. Berkinbayeva A.N. Sedelnikova G.V. Kenzhaliyev B.K. Azlan M.N. Magomedov D.R. Efremova Y.M.
July 2021Faculty of Metallurgy
Metalurgija
2021#60Issue 3-4423 - 426 pp.
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.
Arsenic , Biochemical method , Gold , Hydrometallurgy , Recovery
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Satbayev University, JSC “Institute of Metallurgy and Ore Beneficiation”, Almaty, Kazakhstan
JSC «Rosgeologia», Moscow, Russian Federation
Physics Department, Faculty of Science and Mathematics, Universiti Pendidikan Sultan Idris, Tanjung Malim, Perak, Malaysia
Satbayev University
JSC «Rosgeologia»
Physics Department
10 лет помогаем публиковать статьи Международный издатель
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