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
The electronic structure of chalcopyrites—bands, point defects and grain boundaries
TL;DR: In this paper, the authors summarize the progress made recently in understanding the electronic structure of chalcopyrite solar cells and summarize the results of optoelectronic defect spectroscopy.
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The evolution of surface layers formed during chalcopyrite leaching
TL;DR: Chalcopyrite (CuFeS2) leaching in perchloric acid (HClO4) at an initial pH of one and a temperature of 85°C has been examined in this paper.
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Studies of copper valence states with Cu L 3 x-ray-absorption spectroscopy
Marco Grioni,J. B. Goedkoop,R. Schoorl,F. M. F. de Groot,J. C. Fuggle,F. Schäfers,E. E. Koch,G. Rossi,J.M. Esteva,R.C. Karnatak +9 more
TL;DR: In this paper, the authors used x-ray-absorption spectroscopy to study a series of compounds in which Cu assumes a formal valence between 0 and 3, and found that the shape, the threshold energy, and the intensity of the Cu ${L}_{3}$ absorption edge is strongly influenced by the chemical state of the atoms.
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Crystal Distortion in Copper Ferrite-Chromite Series
Haruyuki Ohnishi,Teruo Teranishi +1 more
TL;DR: In this article, the lattice parameters are also measured as a function of chromium ion content and temperature, and the critical fraction of copper ions on 16d and 8a sites for the occurrence of bulk crystal distortion from cubic to tetragonal symmetry is determined.