Development of a tank bioleaching process for the treatment of complex Cu-polymetallic concentrates

Gericke, Mariekie; Muller, H.H.; Staden, P.J. van; Pinches, A.

doi:10.1016/j.hydromet.2008.05.018

Cited by 25 publications

(10 citation statements)

References 23 publications

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“…Bioleaching with thermophiles may be required to achieve a high extent copper extraction. The next chemical reactions from (3) to (6) show partial oxidation of the sulphides:…”

Section: Mineralogical Analysis Of Solid Residuementioning

confidence: 99%

“…The adaptation period allowed further improvement of the bioleaching process at a solids concentration of 10%. As a possible reason for this improvement, a gradual adaptation of the microbiological consortium is indicated, whereby this may be an indication that the microbial consortium is adapted by the mutation of the inherent genes or by obtaining new genes from the horizontal gene pool, leading to increased resistance to the increasing concentrations of both base metals Cu and Zn [3].…”

Section: Lead Gold and Silver Recoverymentioning

confidence: 99%

“…Processing of polymetallic complex low-grade ores has an important role in modern research in terms of the ability to achieve higher recoveries of metal values from such mineral resources [3][4][5].…”

Section: Introductionmentioning

confidence: 99%

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Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

et al. 2019

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There are many sources to increase value in an integrated mining–metallurgy context. The optimal strategy for concentration of minerals from the ore is one of these sources. The elements of mining-metallurgy operations from resources, infrastructure, mining site, processing, and metallurgy are mutually dependent, and reinforce and interact positively with each other to generate a combined value greater than the sum of their individual contributions. Bioleaching technology is an alternative processing technology for treatment of low-grade sulphide ore, and its application contributes to the achievement of better economic results than the conventional pyrometallurgical technology. This work presents the application of bioleaching technology in laboratory conditions for metal extraction from the polymetallic deposit Tenka in East Serbia, belonging to the company Serbia Zijin Bor Copper Doo (formerly the Mining Smelter Basin Bor Group). Bioleaching of sulphide polymetallic raw material is performed by chemolithoautotrophic microorganisms. Applying the bioleaching technology, the achieved recoveries of metals from the polymetallic ore are as follows: Cu 90%, Au 90%, Ag 80%, Zn 72% and Pb 90%. The calculated values for Net Present Value (NPV) and Internal Rate of Return (IRR) are $ 21.927 million and 12.55%, respectively.

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“…Bioleaching with thermophiles may be required to achieve a high extent copper extraction. The next chemical reactions from (3) to (6) show partial oxidation of the sulphides:…”

Section: Mineralogical Analysis Of Solid Residuementioning

confidence: 99%

Section: Lead Gold and Silver Recoverymentioning

confidence: 99%

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Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

et al. 2019

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“…All experiments were carried out for 17 days to improve the target metals solubilization, in accordance with some authors (Gericke et al 2008, Lavalle et al 2008, Nguyen et al 2015b.…”

Section: Experimental Designmentioning

confidence: 99%

EFFECT OF pH, MINING TAILINGS CONCENTRATION AND CULTURE MEDIUM ON THE PERFORMANCE OF POLYMETALLIC BIOLEACHING AT FLASK LEVEL

Zazueta-Álvarez

Medrano-Roldán

Reyes-Jáquez

et al. 2018

Rev. Int. Contam. Ambie.

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The aim of this research was to evaluate bioleaching of Mn, As, Pb and Zn from mining tailings using two different sets of variable processing conditions. In the first set pH (2.0, 4.0 and 6.0), tailings concentrations (10, 20 y 30 %, w/v [111.11, 250.00 and 428.57 g/L, respectively]), and two types of culture medium (9K [with nitrogen source] and nonN (nitrogen-free medium) were evaluated; in the second set the evaluation focused on continuous supplementation of biogenic H2SO4 oxidized with two types of culture medium (9K and nonN) at different tailings concentrations (10, 20 y 30 %, w/v [111.11, 250.00 and 428.57 g/L, respectively]), with continuous supplementation of the media previously described (9K and nonN) oxidized by the native strains Leptospirillum ferriphilum and Leptospirillum ferrooxidans. In the first set, the highest removal of Mn (93.49 %), As (13.92 %) and Pb (> 99 %) was observed in both media at 10 % of tailings and initial pH of 2.0. In the second experimental set, the highest removal of Mn (99 %), As (> 85 %), Pb (> 99 %) and Zn (67 %) was found with both media at 10 % of tailings and initial pH 6.0. Continuous supplementation of biologically acidified and oxidized culture media enhanced the metals removal from solid waste or tailings. Similar metals removal in media without nitrogen compared to medium with nitrogen was observed in this research.

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“…However, the addition of an oxidizing or reducing agent to the bacterial leaching vessel may be detrimental for bacterial activity. In this context, some researchers used controlling the oxygen mass transfer for maintaining the redox potential at the low levels (Gericke et al, 2010;Gericke et al, 2008). Another option could be oxidizing or reducing the ferrous and ferric ions directly by electrolysis during the course of bacterial leaching experiments (Harvey and Crundwell, 1997).…”

Section: Introductionmentioning

confidence: 99%

The effect of redox control on the continuous bioleaching of chalcopyrite concentrate

Lotfalian

Ranjbar

Fazaelipoor

et al. 2015

Minerals Engineering

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Development of a tank bioleaching process for the treatment of complex Cu-polymetallic concentrates

Cited by 25 publications

References 23 publications

Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

Maximizing Economic Performance in the Mining Industry by Applying Bioleaching Technology for Extraction of Polymetallic Mineral Deposits

EFFECT OF pH, MINING TAILINGS CONCENTRATION AND CULTURE MEDIUM ON THE PERFORMANCE OF POLYMETALLIC BIOLEACHING AT FLASK LEVEL

The effect of redox control on the continuous bioleaching of chalcopyrite concentrate

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