Development of BIONORD® technology on Olimpiada deposit refractory arsenic-gold ores treatment in conditions of Extreme North

Белый, А. В.; Chernov, D.V.; Solopova, Natalia

doi:10.1016/j.hydromet.2018.04.010

Cited by 13 publications

(17 citation statements)

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“…The form of inclusions is irregular, lamellar, vein-shaped, fracture, droplet-shaped and spongiform. In the ore milled down to −74 μm, about 15% of gold is in a free form, and up to 45% is in a cyanidable form in aggregates with ore minerals [34,36]. The most common gold inclusions in quartz and sulfides are arsenopyrite, pyrite, pyrrhotite and berthierite (Figure 2).…”

Section: Primary (Hypogene) Sulfide Orementioning

confidence: 99%

“…In addition to micro-and macroscopic gold, the ores contain "invisible" (refractory) gold, which is not extractable by cyanidation. The share of such gold can reach 40-60%, and its extraction is carried out by JSC Polyus Krasnoyarsk using its own bio-oxidation technology BIONORD ® [36]. "Invisible" gold is confined to sulfide minerals of the deposit, first of all, to needle-like arsenopyrite of the early association, in which its concentrations range from 0.0n to 2298 ppm [37,38].…”

Section: Primary (Hypogene) Sulfide Orementioning

confidence: 99%

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Gold in the Oxidized Ores of the Olympiada Deposit (Eastern Siberia, Russia)

et al. 2021

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Native gold and its satellite minerals were studied throughout the 300 m section of oxidized ores of the Olympiada deposit (Eastern Siberia, Russia). Three zones are identified in the studied section: Upper Zone ~60 g/t Au; Middle Zone ~3 g/t Au; Lower Zone ~20 g/t Au. Supergene and hypogene native gold have been found in these zones. Supergene gold crystals (~1 μm), their aggregates and their globules (100 nm to 1 μm) predominate in the Upper and less in Middle Zone. Relic hypogene gold particles (flattened, fracture and irregular morphology) are sporadically distributed throughout the section. Spongiform gold occurs in the Lower Zone at the boundary with the bedrock, as well as in the bedrock. This gold formed in the process of oxidation of aurostibite, leaching of impurities and its further dissolution. Hypogene gold is commonly isolated but for supergene gold typically associated with ferric (hydr)oxides. New formation of gold occurred due to oxidation of sulfide ores and release of “invisible” gold, as well as dissolution, mobilization and re-deposition of metallic hypogene gold. A model for the formation of oxidized ores with the participation of meteoric and low-temperature hydrothermal waters has been proposed.

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Section: Primary (Hypogene) Sulfide Orementioning

confidence: 99%

Section: Primary (Hypogene) Sulfide Orementioning

confidence: 99%

Gold in the Oxidized Ores of the Olympiada Deposit (Eastern Siberia, Russia)

et al. 2021

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“…spp., Leptospirillum ( L. ) spp., Sulfobacillus ( Sb. ) spp., Ferroplasma ( F. ) spp., and some other microorganisms [ 15 , 17 , 18 , 19 , 20 , 21 , 22 ]. The Olympiada biooxidation plant is located in the Krasnoyarsk Krai (Siberia, Russia) and has been operated by Polyus Krasnoyarsk JSC since 2001.…”

Section: Introductionmentioning

confidence: 99%

“…The Olympiada biooxidation plant is located in the Krasnoyarsk Krai (Siberia, Russia) and has been operated by Polyus Krasnoyarsk JSC since 2001. It is one of the largest biooxidation factories in the world that processes from 8 to 9 million tons of gold-bearing ore annually using a high-performance BIONORD® technology developed under the conditions of Extreme North (Siberia, Russia) [ 15 , 20 ]. The average productivity of the Olimpiada plant is 1200–1300 tons of the flotation sulfidic concentrate per day, which allowed the recovery of 30 tons of gold in 2017 [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

“…It is one of the largest biooxidation factories in the world that processes from 8 to 9 million tons of gold-bearing ore annually using a high-performance BIONORD® technology developed under the conditions of Extreme North (Siberia, Russia) [ 15 , 20 ]. The average productivity of the Olimpiada plant is 1200–1300 tons of the flotation sulfidic concentrate per day, which allowed the recovery of 30 tons of gold in 2017 [ 20 ]. The main minerals composing sulfide concentrates are pyrite, arsenopyrite, pyrrhotite, and antimonite [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Unraveling the Central Role of Sulfur-Oxidizing Acidiphilium multivorum LMS in Industrial Bioprocessing of Gold-Bearing Sulfide Concentrates

Panyushkina

Булаев

Белый³

2021

Microorganisms

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Acidiphilium multivorum LMS is an acidophile isolated from industrial bioreactors during the processing of the gold-bearing pyrite-arsenopyrite concentrate at 38–42 °C. Most strains of this species are obligate organoheterotrophs that do not use ferrous iron or reduced sulfur compounds as energy sources. However, the LMS strain was identified as one of the predominant sulfur oxidizers in acidophilic microbial consortia. In addition to efficient growth under strictly heterotrophic conditions, the LMS strain proved to be an active sulfur oxidizer both in the presence or absence of organic compounds. Interestingly, Ac. multivorum LMS was able to succeed more common sulfur oxidizers in microbial populations, which indicated a previously underestimated role of this bacterium in industrial bioleaching operations. In this study, the first draft genome of the sulfur-oxidizing Ac. multivorum was sequenced and annotated. Based on the functional genome characterization, sulfur metabolism pathways were reconstructed. The LMS strain possessed a complicated multi-enzyme system to oxidize elemental sulfur, thiosulfate, sulfide, and sulfite to sulfate as the final product. Altogether, the phenotypic description and genome analysis unraveled a crucial role of Ac. multivorum in some biomining processes and revealed unique strain-specific characteristics, including the ars genes conferring arsenic resistance, which are similar to those of phylogenetically distinct microorganisms.

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Biooxidation of Gold Ores in Russia and Kazakhstan

Белый¹,

Tupikina²

2022

Biomining Technologies

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Development of BIONORD® technology on Olimpiada deposit refractory arsenic-gold ores treatment in conditions of Extreme North

Cited by 13 publications

References 0 publications

Gold in the Oxidized Ores of the Olympiada Deposit (Eastern Siberia, Russia)

Gold in the Oxidized Ores of the Olympiada Deposit (Eastern Siberia, Russia)

Unraveling the Central Role of Sulfur-Oxidizing Acidiphilium multivorum LMS in Industrial Bioprocessing of Gold-Bearing Sulfide Concentrates

Biooxidation of Gold Ores in Russia and Kazakhstan

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