Journal ArticleDOI
A review of the structure, and fundamental mechanisms and kinetics of the leaching of chalcopyrite.
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TLDR
There is general agreement in the literature that chalcopyrite leaching is significantly affected by solution redox potential with an optimum E(h) range suggesting the participation of leach steps that involve both oxidation and reduction.About:
This article is published in Advances in Colloid and Interface Science.The article was published on 2013-09-01. It has received 338 citations till now. The article focuses on the topics: Chalcopyrite & Leaching (metallurgy).read more
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Kinetics of oxidative degradation/mineralization pathways of the antibiotic tetracycline by the novel heterogeneous electro-Fenton process with solid catalyst chalcopyrite
Natija Barhoumi,Natija Barhoumi,Hugo Olvera-Vargas,Nihal Oturan,David Huguenot,Abdellatif Gadri,Salah Ammar,Enric Brillas,Mehmet A. Oturan +8 more
TL;DR: In this article, the degradation of solutions of the antibiotic tetracycline (TC) has been studied by a novel electrochemical advanced oxidation process, consisting in electro-Fenton (EF) process using chalcopyrite as heterogeneous catalyst.
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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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Current scenario of chalcopyrite bioleaching: a review on the recent advances to its heap-leach technology.
TL;DR: Advances in the designing of heap bioleaching plant along with microbial and environmental factors of importance have been reviewed with conclusions into the future prospects of chalcopyriteBioleaching.
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A Review of the Occurrence and Promising Recovery Methods of Rare Earth Elements from Coal and Coal By-Products
TL;DR: In this article, a review of the abundance, mode of occurrence, and recovery methods of rare earth elements in coal and coal by-products is provided along with issues associated with their use with coal resources.
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Heap Leaching Technology—Current State, Innovations, and Future Directions: A Review
TL;DR: Heap leaching is a well-established extractive metallurgical technology enabling the economical processing of various kinds of low-grade ores, which could not otherwise be exploited as mentioned in this paper.
References
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Journal ArticleDOI
Tank bioleaching of low-grade chalcopyrite concentrates using redox control
TL;DR: In this article, the effect of temperature and redox control on chalcopyrite leach kinetics was evaluated in a bench-scale piloting facility, comprising fully controlled multi-stage continuously operated reactor systems using moderate thermophile and thermophile consortia under both uncontrolled and controlled redox potential conditions.
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Bioleaching of chalcopyrite with thermophiles: Temperature–pH–ORP dependence
TL;DR: In this paper, the copper extraction yield from thermophilic bioleaching of chalcopyrite depends on temperature, pH, and the oxidation-reduction potential (ORP), as well as on the activity of the thermophile used.
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Conventional and electrochemical bioleaching of chalcopyrite concentrates by moderately thermophilic bacteria at high pulp density
TL;DR: In this paper, the results of 10-day leaches showed that, when using electrochemical bio-leaching in an ORP range of 400 to 430mV, copper recovery reached about 80% which is 39, 15 and 117 times higher than that achieved in abiotic electrochemical leaching, conventional bioleaching, and electrochemical Bioleaching at 440-480mV ORP, respectively, in the presence and absence of a mixed culture of moderately thermophilic iron-and sulphur oxidizing bacteria using a 2-L stirred electro-biore
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Raman characterization of secondary minerals formed during chalcopyrite leaching with Acidithiobacillus ferrooxidans
TL;DR: In this paper, secondary minerals formed during chalcopyrite passivation in the presence of iron and sulfur-oxidizing bacteria ( Acidithiobacillus ferrooxidans ) in mineral salts solution were characterized with X-ray diffraction, Fourier transform-infrared spectroscopy, and Raman spectrography.
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Effect of suspension potential on the oxidation rate of copper concentrate in a sulfuric acid solution
Hiroshi Kametani,Aiko Aoki +1 more
TL;DR: In this paper, a chalcopyrite concentrate containing 17 pct pyrite was oxidized in 1 mol/dm3 sulfuric acid solution at 90 °C (363.2 K).