Journal ArticleDOI
Copper recovery from chalcopyrite concentrates by the BRISA process
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TLDR
In this article, the technical viability of the BRISA process (Biolixiviacion Rapida Indirecta con Separacion de Acciones: Fast Indirect Bioleaching with Actions Separation) for the copper recovery from chalcopyrite concentrates was proved.About:
This article is published in Hydrometallurgy.The article was published on 2003-07-01. It has received 64 citations till now. The article focuses on the topics: Bioleaching & Ferric.read more
Citations
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Journal ArticleDOI
The bioleaching of sulphide minerals with emphasis on copper sulphides — A review
TL;DR: The main focus is on heap bioleaching of whole ores, and the development of models to describe heap and dump processes that can be applied in the design phase as well as to optimise metal extraction.
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New approaches for extracting and recovering metals from mine tailings
TL;DR: A two-stage mineral leaching and metal recovery protocol was developed to extract copper from tailings generated as waste materials in two mines currently operating in Spain and Serbia as discussed by the authors, where the most effective extraction of copper (84 to > 90%) was achieved by bio-leaching the tailings at 45°C, using a defined microbial consortium, where elemental sulfur was added to the leach and the pH of leach liquors allowed to fall to ∼pH 1, at which point anaerobic conditions were imposed.
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Chalcopyrite hydrometallurgy at atmospheric pressure: 1. Review of acidic sulfate, sulfate–chloride and sulfate–nitrate process options
TL;DR: In this paper, the authors present a review of current knowledge in respect of sulfate-sulfuric acid systems and highlight potentially rewarding areas for future research, including the potential to exploit alternative oxidants to ferric ion.
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Copper leaching from chalcopyrite concentrates
TL;DR: A number of demonstration plant operations have been conducted, but as of this writing none of the processes have become completely commercially operational as mentioned in this paper, which is a limitation of the current state-of-the-art.
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Catalytic potential of selected metal ions for bioleaching, and potential techno-economic and environmental issues: A critical review
TL;DR: The role and mechanisms of metal species in catalyzing bioleaching from different minerals and waste materials are reviewed, techno-economic and environmental challenges associated with the use of metals ions as catalysts are identified, and future prospectives are discussed.
References
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Journal ArticleDOI
STUDIES ON THE CHEMOAUTOTROPHIC IRON BACTERIUM FERROBACILLUS FERROOXIDANS I. An Improved Medium and a Harvesting Procedure for Securing High Cell Yields
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A new reaction model for the catalytic effect of silver ions on chalcopyrite leaching in sulfuric acid solutions
TL;DR: In this article, the authors proposed a reaction model to interpret the catalytic effect of silver ions on chalcopyrite leaching in sulfuric acid solutions, and applied the model to analyze the effect of the presence of silver ion on the performance of chal copyrite extraction.
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The influence of silver ion on the electrochemical response of chalcopyrite and other mineral sulfide electrodes in sulfuric acid
D.W. Price,G.W. Warren +1 more
TL;DR: In this article, the electrochemical behavior of chalcopyrite electrodes in H 2 SO 4 solutions with and without silver ion has been investigated and provided additional information concerning the enhanced or catalyzed leaching rates previously observed for the ferric sulfate leaching of CuFeS 2 in the presence of Ag +.
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Electrochemical aspects of leaching copper from chalcopyrite in ferric and cupric salt solutions
TL;DR: In this article, it was shown that a layer of sulfur forms on corroding chalcopyrite, but this is not the species which slows transport of ions and transfer of electrons.
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Silver catalyzed IBES process: application to a Spanish copper-zinc sulphide concentrate
TL;DR: In this article, an indirect bioleaching with effects separation (IBES) process was applied to a chalcopyrite/sphalerite concentrate from Rio Tinto.