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
Chalcopyrite dissolution rate laws
TL;DR: In this paper, a meta-analysis of 173 rate measurements from 21 publications was used to develop rate laws for chalcopyrite dissolution under environmentally relevant conditions, where the surface area is expressed on a geometric basis.
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Disulphide and metal sulphide formation on the reconstructed (0 0 1) surface of chalcopyrite: A DFT study
TL;DR: In this article, the bulk and (0.0.1) surface of chalcopyrite have been investigated using Plane Waves Density Functional calculations and the band structure and the optimized lattice parameters are in good agreement with previously published results.
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A comparative X-ray absorption near-edge structure study of bornite, Cu5FeS4, and chalcopyrite, CuFeS2
Yuri Mikhlin,Yevgeny Tomashevich,Vladimir L. Tauson,Denis V. Vyalikh,Serguei L. Molodtsov,Rüdiger Szargan +5 more
TL;DR: In this paper, high resolution X-ray absorption near-edge structure (XANES) spectra of synthetic bornite and the samples oxidized in air and leached in a ferric chloride solution have been recorded and compared with the Spectra of chalcopyrite.
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Characterization of extracellular polymeric substances extracted during the bioleaching of chalcopyrite concentrate
Weimin Zeng,Weimin Zeng,Weimin Zeng,Guanzhou Qiu,Guanzhou Qiu,Hongbo Zhou,Hongbo Zhou,Xueduan Liu,Xueduan Liu,Miao Chen,Weiliang Chao,Cheng-gui Zhang,Cheng-gui Zhang,Juanhua Peng,Juanhua Peng +14 more
TL;DR: A mixed culture of moderately thermophilic microorganisms was used to bio-leach chalcopyrite concentrate in a stirred tank reactor which achieved up to 84.7% copper extraction in 24 days at a pulp density of 6%.
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Ferric chloride leaching of chalcopyrite : Synergetic effect of CuCl2
TL;DR: In this paper, the effects of stirring speed and temperature on the leaching of chalcopyrite in acidic ferric chloride were investigated, and the shrinking core model was fitted to the data and it was found that the leach process was controlled by chemical reaction with activation energy of 69 kJ/mole.