Changes in an Ore Dump during a 40-Year Period of Commercial-Scale and Spontaneous Natural Bioleaching

V.I. Groudeva; D.V. Vasilev; G.I. Karavaiko; Stoyan N. Groudev

doi:10.4028/www.scientific.net/AMR.71-73.373

Paper Titles

Studies on Thermophilic Bioleaching of Chalcopyrite toward Heap Application
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Advances in Tank Bioleaching of Low-Grade Chalcopyrite Concentrates
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Sulfide Mineral Induced Oxidative Stress as a Limiting Factor in Tank Bioleaching Performance
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Impacts of Mineralogy on the Chemistry and Microbiology of Heap Bioleaching
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Changes in an Ore Dump during a 40-Year Period of Commercial-Scale and Spontaneous Natural Bioleaching
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Investigations of Attached and Unattached Cells during Bioleaching of Chalcopyrite with Acidianus Manzaensis at 65°C
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An Experimental Approach for Studying Chalcopyrite Leaching and Passivation in Column Bioleaching
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Oxidation of Chalcopyrite (CuFeS₂) by Acidithiobacillus Ferrooxidans and a Mixed Culture of Acidithiobacillus Ferrooxidans and Acidithiobacillus Thiooxidans Like Bacterium in Shake Flasks
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Rietveld Refinement of X-Ray Diffractograms Evidences Surface Texturization in Chemical and Biological Leaching of Chalcopyrite at 70°C
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 71-73Changes in an Ore Dump during a 40-Year Period of...

Changes in an Ore Dump during a 40-Year Period of Commercial-Scale and Spontaneous Natural Bioleaching

Abstract:

A dump located in the proximity of the Vlaikov Vrah mine, Bulgaria, and containing about 120 000 tons of run-of-mine mining wastes (low-grade ores and rock mass), since 1968 was subjected initially to spontaneous natural bioleaching based on the rains as irrigating leach solutions, then from 1972 to 2003 to commercial-scale bioleaching by means of irrigation with acidified leach solutions, and since 2004- again to spontaneous natural bioleaching. The monitoring of these processes during this 40-year period revealed considerable changes in the composition, geotechnical and acid-base properties of the dump material, as well as in the diversity, number and activity of its microflora.The data obtained during this study were used to stimulate the bioleaching process in the huge commercial-scale copper dump leaching operation at Vlaikov Vrah mine in which about forty million tons of such mining wastes were treated.

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Periodical:

Advanced Materials Research (Volumes 71-73)

Pages:

373-376

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.71-73.373

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Online since:

May 2009

Authors:

V.I. Groudeva, D.V. Vasilev, G.I. Karavaiko, Stoyan N. Groudev

Keywords:

Acidophilic Chemolithotroph, Copper Bioleaching, Dump Leaching, Low-Grades Copper Ore, Mining Waste

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References

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